[PATCH] new kernel configuration 2/7

This adds the new kernel config core (library + the three front ends).

19 files changed, 11856 insertions, 0 deletions

diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
new file mode 100644
index 000000000000..1e519ed2b3ab
--- /dev/null
+++ b/scripts/kconfig/Makefile
@@ -0,0 +1,86 @@
+#################
+#
+# Shared Makefile for the various lkc executables:
+# conf:	  Used for defconfig, oldconfig and related targets
+# mconf:  Used for the mconfig target.
+#         Utilizes the lxdialog package
+# qconf:  Used for the xconfig target
+#         Based on QT which needs to be installed to compile it
+#
+
+# object files used by all lkc flavours
+libkconfig-objs := zconf.tab.o
+
+host-progs	:= conf mconf qconf
+conf-objs	:= conf.o  libkconfig.so
+mconf-objs	:= mconf.o libkconfig.so
+
+qconf-objs	:= kconfig_load.o
+qconf-cxxobjs	:= qconf.o
+
+clean-files	:= libkconfig.so lkc_defs.h qconf.moc .tmp_qtcheck \
+		   zconf.tab.c zconf.tab.h lex.zconf.c
+
+include $(TOPDIR)/Rules.make
+
+# generated files seem to need this to find local include files
+HOSTCFLAGS_lex.zconf.o	:= -I$(src)
+HOSTCFLAGS_zconf.tab.o	:= -I$(src)
+
+HOSTLOADLIBES_qconf	= -L$(QTDIR)/lib -Wl,-rpath,$(QTDIR)/lib -l$(QTLIB) -ldl
+HOSTCXXFLAGS_qconf.o	= -I$(QTDIR)/include 
+
+$(obj)/conf.o $(obj)/mconf.o $(obj)/qconf.o: $(obj)/zconf.tab.h
+
+$(obj)/qconf.o: $(obj)/.tmp_qtcheck
+
+-include $(obj)/.tmp_qtcheck
+
+# QT needs some extra effort...
+$(obj)/.tmp_qtcheck:
+	@set -e; for d in $$QTDIR /usr/share/qt /usr/lib/qt3; do \
+	  if [ -x $$d/bin/moc ]; then DIR=$$d; break; fi; \
+	done; \
+	if [ -z "$$DIR" ]; then \
+	  echo "*"; \
+	  echo "* Unable to find the QT installation. Please make sure that the"; \
+	  echo "* QT development package is correctly installed and the QTDIR"; \
+	  echo "* environment variable is set to the correct location."; \
+	  echo "*"; \
+	  false; \
+	fi; \
+	LIB=qt; \
+	if [ -f $$DIR/lib/libqt-mt.so ]; then LIB=qt-mt; fi; \
+	echo "QTDIR=$$DIR" > $@; echo "QTLIB=$$LIB" >> $@
+
+$(obj)/zconf.tab.o: $(obj)/lex.zconf.c
+
+$(obj)/kconfig_load.o: $(obj)/lkc_defs.h
+
+$(obj)/qconf.o: $(obj)/qconf.moc $(obj)/lkc_defs.h
+
+$(obj)/%.moc: $(src)/%.h
+	$(QTDIR)/bin/moc -i $< -o $@
+
+$(obj)/lkc_defs.h: $(src)/lkc_proto.h
+	sed < $< > $@ 's/P(\([^,]*\),.*/#define \1 (\*\1_p)/'
+
+
+###
+# The following requires flex/bison
+# By default we use the _shipped versions, uncomment the following line if
+# you are modifying the flex/bison src.
+# LKC_GENPARSER := 1
+
+ifdef LKC_GENPARSER
+
+$(obj)/zconf.tab.c: $(obj)/zconf.y 
+$(obj)/zconf.tab.h: $(obj)/zconf.tab.c
+
+%.tab.c: %.y
+	bison -t -d -v -b $* -p $(notdir $*) $<
+
+lex.%.c: %.l
+	flex -P$(notdir $*) -o$@ $<
+
+endif
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
new file mode 100644
index 000000000000..74c94c233aac
--- /dev/null
+++ b/scripts/kconfig/conf.c
@@ -0,0 +1,565 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <time.h>
+#include <sys/stat.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+static void conf(struct menu *menu);
+static void check_conf(struct menu *menu);
+
+enum {
+	ask_all,
+	ask_new,
+	ask_silent,
+	set_default,
+	set_yes,
+	set_mod,
+	set_no,
+	set_random
+} input_mode = ask_all;
+
+static int indent = 1;
+static int valid_stdin = 1;
+static int conf_cnt;
+static char line[128];
+static struct menu *rootEntry;
+
+static char nohelp_text[] = "Sorry, no help available for this option yet.\n";
+
+#if 0
+static void printc(int ch)
+{
+	static int sep = 0;
+
+	if (!sep) {
+		putchar('[');
+		sep = 1;
+	} else if (ch)
+		putchar('/');
+	if (!ch) {
+		putchar(']');
+		putchar(' ');
+		sep = 0;
+	} else
+		putchar(ch);
+}
+#endif
+
+static void printo(const char *o)
+{
+	static int sep = 0;
+
+	if (!sep) {
+		putchar('(');
+		sep = 1;
+	} else if (o) {
+		putchar(',');
+		putchar(' ');
+	}
+	if (!o) {
+		putchar(')');
+		putchar(' ');
+		sep = 0;
+	} else
+		printf("%s", o);
+}
+
+static void strip(char *str)
+{
+	char *p = str;
+	int l;
+
+	while ((isspace(*p)))
+		p++;
+	l = strlen(p);
+	if (p != str)
+		memmove(str, p, l + 1);
+	if (!l)
+		return;
+	p = str + l - 1;
+	while ((isspace(*p)))
+		*p-- = 0;
+}
+
+static void conf_askvalue(struct symbol *sym, const char *def)
+{
+	enum symbol_type type = sym_get_type(sym);
+	tristate val;
+
+	if (!sym_has_value(sym))
+		printf("(NEW) ");
+
+	line[0] = '\n';
+	line[1] = 0;
+
+	switch (input_mode) {
+	case ask_new:
+	case ask_silent:
+		if (sym_has_value(sym)) {
+			printf("%s\n", def);
+			return;
+		}
+		if (!valid_stdin && input_mode == ask_silent) {
+			printf("aborted!\n\n");
+			printf("Console input/output is redirected. ");
+			printf("Run 'make oldconfig' to update configuration.\n\n");
+			exit(1);
+		}
+	case ask_all:
+		fgets(line, 128, stdin);
+		return;
+	case set_default:
+		printf("%s\n", def);
+		return;
+	default:
+		break;
+	}
+
+	switch (type) {
+	case S_INT:
+	case S_HEX:
+	case S_STRING:
+		printf("%s\n", def);
+		return;
+	default:
+		;
+	}
+	switch (input_mode) {
+	case set_yes:
+		if (sym_tristate_within_range(sym, yes)) {
+			line[0] = 'y';
+			line[1] = '\n';
+			line[2] = 0;
+			break;
+		}
+	case set_mod:
+		if (type == S_TRISTATE) {
+			if (sym_tristate_within_range(sym, mod)) {
+				line[0] = 'm';
+				line[1] = '\n';
+				line[2] = 0;
+				break;
+			}
+		} else {
+			if (sym_tristate_within_range(sym, yes)) {
+				line[0] = 'y';
+				line[1] = '\n';
+				line[2] = 0;
+				break;
+			}
+		}
+	case set_no:
+		if (sym_tristate_within_range(sym, no)) {
+			line[0] = 'n';
+			line[1] = '\n';
+			line[2] = 0;
+			break;
+		}
+	case set_random:
+		do {
+			val = (tristate)(random() % 3);
+		} while (!sym_tristate_within_range(sym, val));
+		switch (val) {
+		case no: line[0] = 'n'; break;
+		case mod: line[0] = 'm'; break;
+		case yes: line[0] = 'y'; break;
+		}
+		line[1] = '\n';
+		line[2] = 0;
+		break;
+	default:
+		break;
+	}
+	printf("%s", line);
+}
+
+int conf_string(struct menu *menu)
+{
+	struct symbol *sym = menu->sym;
+	const char *def, *help;
+
+	while (1) {
+		printf("%*s%s ", indent - 1, "", menu->prompt->text);
+		printf("(%s) ", sym->name);
+		def = sym_get_string_value(sym);
+		if (sym_get_string_value(sym))
+			printf("[%s] ", def);
+		conf_askvalue(sym, def);
+		switch (line[0]) {
+		case '\n':
+			break;
+		case '?':
+			/* print help */
+			if (line[1] == 0) {
+				help = nohelp_text;
+				if (menu->sym->help)
+					help = menu->sym->help;
+				printf("\n%s\n", menu->sym->help);
+				def = NULL;
+				break;
+			}
+		default:
+			line[strlen(line)-1] = 0;
+			def = line;
+		}
+		if (def && sym_set_string_value(sym, def))
+			return 0;
+	}
+}
+
+static int conf_sym(struct menu *menu)
+{
+	struct symbol *sym = menu->sym;
+	int type;
+	tristate oldval, newval;
+	const char *help;
+
+	while (1) {
+		printf("%*s%s ", indent - 1, "", menu->prompt->text);
+		if (sym->name)
+			printf("(%s) ", sym->name);
+		type = sym_get_type(sym);
+		putchar('[');
+		oldval = sym_get_tristate_value(sym);
+		switch (oldval) {
+		case no:
+			putchar('N');
+			break;
+		case mod:
+			putchar('M');
+			break;
+		case yes:
+			putchar('Y');
+			break;
+		}
+		if (oldval != no && sym_tristate_within_range(sym, no))
+			printf("/n");
+		if (oldval != mod && sym_tristate_within_range(sym, mod))
+			printf("/m");
+		if (oldval != yes && sym_tristate_within_range(sym, yes))
+			printf("/y");
+		if (sym->help)
+			printf("/?");
+		printf("] ");
+		conf_askvalue(sym, sym_get_string_value(sym));
+		strip(line);
+
+		switch (line[0]) {
+		case 'n':
+		case 'N':
+			newval = no;
+			if (!line[1] || !strcmp(&line[1], "o"))
+				break;
+			continue;
+		case 'm':
+		case 'M':
+			newval = mod;
+			if (!line[1])
+				break;
+			continue;
+		case 'y':
+		case 'Y':
+			newval = yes;
+			if (!line[1] || !strcmp(&line[1], "es"))
+				break;
+			continue;
+		case 0:
+			newval = oldval;
+			break;
+		case '?':
+			goto help;
+		default:
+			continue;
+		}
+		if (sym_set_tristate_value(sym, newval))
+			return 0;
+help:
+		help = nohelp_text;
+		if (sym->help)
+			help = sym->help;
+		printf("\n%s\n", help);
+	}
+}
+
+static int conf_choice(struct menu *menu)
+{
+	struct symbol *sym, *def_sym;
+	struct menu *cmenu, *def_menu;
+	const char *help;
+	int type, len;
+	bool is_new;
+
+	sym = menu->sym;
+	type = sym_get_type(sym);
+	is_new = !sym_has_value(sym);
+	if (sym_is_changable(sym)) {
+		conf_sym(menu);
+		sym_calc_value(sym);
+		switch (sym_get_tristate_value(sym)) {
+		case no:
+			return 1;
+		case mod:
+			return 0;
+		case yes:
+			break;
+		}
+	} else {
+		sym->def = sym->curr;
+		if (S_TRI(sym->curr) == mod) {
+			printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
+			return 0;
+		}
+	}
+
+	while (1) {
+		printf("%*s%s ", indent - 1, "", menu_get_prompt(menu));
+		def_sym = sym_get_choice_value(sym);
+		def_menu = NULL;
+		for (cmenu = menu->list; cmenu; cmenu = cmenu->next) {
+			if (!menu_is_visible(cmenu))
+				continue;
+			printo(menu_get_prompt(cmenu));
+			if (cmenu->sym == def_sym)
+				def_menu = cmenu;
+		}
+		printo(NULL);
+		if (def_menu)
+			printf("[%s] ", menu_get_prompt(def_menu));
+		else {
+			printf("\n");
+			return 1;
+		}
+		switch (input_mode) {
+		case ask_new:
+		case ask_silent:
+		case ask_all:
+			conf_askvalue(sym, menu_get_prompt(def_menu));
+			strip(line);
+			break;
+		default:
+			line[0] = 0;
+			printf("\n");
+		}
+		if (line[0] == '?' && !line[1]) {
+			help = nohelp_text;
+			if (menu->sym->help)
+				help = menu->sym->help;
+			printf("\n%s\n", help);
+			continue;
+		}
+		if (line[0]) {
+			len = strlen(line) - 1;
+			line[len] = 0;
+
+			def_menu = NULL;
+			for (cmenu = menu->list; cmenu; cmenu = cmenu->next) {
+				if (!cmenu->sym || !menu_is_visible(cmenu))
+					continue;
+				if (!strncmp(line, menu_get_prompt(cmenu), len)) {
+					def_menu = cmenu;
+					break;
+				}
+			}
+		}
+		if (def_menu) {
+			sym_set_choice_value(sym, def_menu->sym);
+			if (def_menu->list) {
+				indent += 2;
+				conf(def_menu->list);
+				indent -= 2;
+			}
+			return 1;
+		}
+	}
+}
+
+static void conf(struct menu *menu)
+{
+	struct symbol *sym;
+	struct property *prop;
+	struct menu *child;
+
+	if (!menu_is_visible(menu))
+		return;
+
+	sym = menu->sym;
+	prop = menu->prompt;
+	if (prop) {
+		const char *prompt;
+
+		switch (prop->type) {
+		case P_MENU:
+			if (input_mode == ask_silent && rootEntry != menu) {
+				check_conf(menu);
+				return;
+			}
+		case P_COMMENT:
+			prompt = menu_get_prompt(menu);
+			if (prompt)
+				printf("%*c\n%*c %s\n%*c\n",
+					indent, '*',
+					indent, '*', prompt,
+					indent, '*');
+		default:
+			;
+		}
+	}
+
+	if (!sym)
+		goto conf_childs;
+
+	if (sym_is_choice(sym)) {
+		conf_choice(menu);
+		if (S_TRI(sym->curr) != mod)
+			return;
+		goto conf_childs;
+	}
+
+	switch (sym->type) {
+	case S_INT:
+	case S_HEX:
+	case S_STRING:
+		conf_string(menu);
+		break;
+	default:
+		conf_sym(menu);
+		break;
+	}
+
+conf_childs:
+	if (sym)
+		indent += 2;
+	for (child = menu->list; child; child = child->next)
+		conf(child);
+	if (sym)
+		indent -= 2;
+}
+
+static void check_conf(struct menu *menu)
+{
+	struct symbol *sym;
+	struct menu *child;
+
+	if (!menu_is_visible(menu))
+		return;
+
+	sym = menu->sym;
+	if (!sym)
+		goto conf_childs;
+
+	if (sym_is_choice(sym)) {
+		if (!sym_has_value(sym)) {
+			if (!conf_cnt++)
+				printf("*\n* Restart config...\n*\n");
+			rootEntry = menu_get_parent_menu(menu);
+			conf(rootEntry);
+		}
+		if (sym_get_tristate_value(sym) != mod)
+			return;
+		goto conf_childs;
+	}
+
+	if (!sym_has_value(sym)) {
+		if (!conf_cnt++)
+			printf("*\n* Restart config...\n*\n");
+		rootEntry = menu_get_parent_menu(menu);
+		conf(rootEntry);
+	}
+
+conf_childs:
+	for (child = menu->list; child; child = child->next)
+		check_conf(child);
+}
+
+int main(int ac, char **av)
+{
+	const char *name;
+	struct stat tmpstat;
+
+	if (ac > 1 && av[1][0] == '-') {
+		switch (av[1][1]) {
+		case 'o':
+			input_mode = ask_new;
+			break;
+		case 's':
+			input_mode = ask_silent;
+			valid_stdin = isatty(0) && isatty(1) && isatty(2);
+			break;
+		case 'd':
+			input_mode = set_default;
+			break;
+		case 'n':
+			input_mode = set_no;
+			break;
+		case 'm':
+			input_mode = set_mod;
+			break;
+		case 'y':
+			input_mode = set_yes;
+			break;
+		case 'r':
+			input_mode = set_random;
+			srandom(time(NULL));
+			break;
+		case 'h':
+		case '?':
+			printf("%s [-o|-s] config\n", av[0]);
+			exit(0);
+		}
+		name = av[2];
+	} else
+		name = av[1];
+	conf_parse(name);
+	//zconfdump(stdout);
+	switch (input_mode) {
+	case set_default:
+		name = conf_get_default_confname();
+		if (conf_read(name)) {
+			printf("***\n"
+				"*** Can't find default configuration \"%s\"!\n"
+				"***\n", name);
+			exit(1);
+		}
+		break;
+	case ask_silent:
+		if (stat(".config", &tmpstat)) {
+			printf("***\n"
+				"*** You have not yet configured your kernel!\n"
+				"***\n"
+				"*** Please run some configurator (e.g. \"make oldconfig\" or\n"
+				"*** \"make menuconfig\" or \"make xconfig\").\n"
+				"***\n");
+			exit(1);
+		}
+	case ask_all:
+	case ask_new:
+		conf_read(NULL);
+		break;
+	default:
+		break;
+	}
+
+	if (input_mode != ask_silent) {
+		rootEntry = &rootmenu;
+		conf(&rootmenu);
+		if (input_mode == ask_all) {
+			input_mode = ask_silent;
+			valid_stdin = 1;
+		}
+	}
+	do {
+		conf_cnt = 0;
+		check_conf(&rootmenu);
+	} while (conf_cnt);
+	conf_write(NULL);
+	return 0;
+}
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
new file mode 100644
index 000000000000..0f5fd9741e60
--- /dev/null
+++ b/scripts/kconfig/confdata.c
@@ -0,0 +1,360 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <ctype.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+const char conf_def_filename[] = ".config";
+char conf_filename[PATH_MAX+1];
+
+const char conf_defname[] = "arch/$ARCH/defconfig";
+
+const char *conf_confnames[] = {
+	".config",
+	"/lib/modules/$UNAME_RELEASE/.config",
+	"/etc/kernel-config",
+	"/boot/config-$UNAME_RELEASE",
+	conf_defname,
+	NULL,
+};
+
+static char *conf_expand_value(const char *in)
+{
+	struct symbol *sym;
+	const char *src;
+	static char res_value[SYMBOL_MAXLENGTH];
+	char *dst, name[SYMBOL_MAXLENGTH];
+
+	res_value[0] = 0;
+	dst = name;
+	while ((src = strchr(in, '$'))) {
+		strncat(res_value, in, src - in);
+		src++;
+		dst = name;
+		while (isalnum(*src) || *src == '_')
+			*dst++ = *src++;
+		*dst = 0;
+		sym = sym_lookup(name, 0);
+		sym_calc_value(sym);
+		strcat(res_value, sym_get_string_value(sym));
+		in = src;
+	}
+	strcat(res_value, in);
+
+	return res_value;
+}
+
+char *conf_get_default_confname(void)
+{
+	return conf_expand_value(conf_defname);
+}
+
+int conf_read(const char *name)
+{
+	FILE *in = NULL;
+	char line[128];
+	char *p, *p2;
+	int lineno = 0;
+	struct symbol *sym;
+	struct property *prop;
+	struct expr *e;
+	int i;
+
+	if (name) {
+		in = fopen(name, "r");
+		if (in)
+			strcpy(conf_filename, name);
+	} else {
+		const char **names = conf_confnames;
+		while ((name = *names++)) {
+			name = conf_expand_value(name);
+			in = fopen(name, "r");
+			if (in) {
+				printf("#\n"
+				       "# using defaults found in %s\n"
+				       "#\n", name);
+				break;
+			}
+		}
+	}
+
+	if (!in)
+		return 1;
+
+	for_all_symbols(i, sym) {
+		sym->flags |= SYMBOL_NEW;
+		switch (sym->type) {
+		case S_INT:
+		case S_HEX:
+		case S_STRING:
+			if (S_VAL(sym->def)) {
+				free(S_VAL(sym->def));
+				S_VAL(sym->def) = NULL;
+			}
+		default:
+			;
+		}
+	}
+
+	while (fgets(line, 128, in)) {
+		lineno++;
+		switch (line[0]) {
+		case '#':
+			if (memcmp(line + 2, "CONFIG_", 7))
+				continue;
+			p = strchr(line + 9, ' ');
+			if (!p)
+				continue;
+			*p++ = 0;
+			if (strncmp(p, "is not set", 10))
+				continue;
+			//printf("%s -> n\n", line + 9);
+			sym = sym_lookup(line + 9, 0);
+			switch (sym->type) {
+			case S_BOOLEAN:
+			case S_TRISTATE:
+				sym->def = symbol_no.curr;
+				sym->flags &= ~SYMBOL_NEW;
+				break;
+			default:
+				;
+			}
+			break;
+		case 'C':
+			if (memcmp(line, "CONFIG_", 7))
+				continue;
+			p = strchr(line + 7, '=');
+			if (!p)
+				continue;
+			*p++ = 0;
+			p2 = strchr(p, '\n');
+			if (p2)
+				*p2 = 0;
+			//printf("%s -> %s\n", line + 7, p);
+			sym = sym_find(line + 7);
+			if (!sym) {
+				fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 7);
+				break;
+			}
+			switch (sym->type) {
+			case S_BOOLEAN:
+				sym->def = symbol_yes.curr;
+				sym->flags &= ~SYMBOL_NEW;
+				break;
+			case S_TRISTATE:
+				if (p[0] == 'm')
+					sym->def = symbol_mod.curr;
+				else
+					sym->def = symbol_yes.curr;
+				sym->flags &= ~SYMBOL_NEW;
+				break;
+			case S_STRING:
+				if (*p++ != '"')
+					break;
+				for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
+					if (*p2 == '"') {
+						*p2 = 0;
+						break;
+					}
+					memmove(p2, p2 + 1, strlen(p2));
+				}
+			case S_INT:
+			case S_HEX:
+				if (sym_string_valid(sym, p)) {
+					S_VAL(sym->def) = strdup(p);
+					sym->flags &= ~SYMBOL_NEW;
+				} else
+					fprintf(stderr, "%s:%d:symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
+				break;
+			default:
+				;
+			}
+			if (sym_is_choice_value(sym)) {
+				prop = sym_get_choice_prop(sym);
+				switch (S_TRI(sym->def)) {
+				case mod:
+					if (S_TRI(prop->def->def) == yes)
+						/* warn? */;
+					break;
+				case yes:
+					if (S_TRI(prop->def->def) != no)
+						/* warn? */;
+					S_VAL(prop->def->def) = sym;
+					break;
+				case no:
+					break;
+				}
+				S_TRI(prop->def->def) = S_TRI(sym->def);
+			}
+			break;
+		case '\n':
+			break;
+		default:
+			continue;
+		}
+	}
+	fclose(in);
+
+	for_all_symbols(i, sym) {
+		if (!sym_is_choice(sym))
+			continue;
+		prop = sym_get_choice_prop(sym);
+		sym->flags &= ~SYMBOL_NEW;
+		for (e = prop->dep; e; e = e->left.expr)
+			sym->flags |= e->right.sym->flags & SYMBOL_NEW;
+	}
+
+	sym_change_count = 1;
+
+	return 0;
+}
+
+int conf_write(const char *name)
+{
+	FILE *out, *out_h;
+	struct symbol *sym;
+	struct menu *menu;
+	char oldname[128];
+	int type, l;
+	const char *str;
+
+	out = fopen(".tmpconfig", "w");
+	if (!out)
+		return 1;
+	out_h = fopen(".tmpconfig.h", "w");
+	if (!out_h)
+		return 1;
+	fprintf(out, "#\n"
+		     "# Automatically generated make config: don't edit\n"
+		     "#\n");
+	fprintf(out_h, "/*\n"
+		       " * Automatically generated C config: don't edit\n"
+		       " */\n"
+		       "#define AUTOCONF_INCLUDED\n");
+
+	if (!sym_change_count)
+		sym_clear_all_valid();
+
+	menu = rootmenu.list;
+	while (menu) {
+		sym = menu->sym;
+		if (!sym) {
+			if (!menu_is_visible(menu))
+				goto next;
+			str = menu_get_prompt(menu);
+			fprintf(out, "\n"
+				     "#\n"
+				     "# %s\n"
+				     "#\n", str);
+			fprintf(out_h, "\n"
+				       "/*\n"
+				       " * %s\n"
+				       " */\n", str);
+		} else if (!(sym->flags & SYMBOL_CHOICE)) {
+			sym_calc_value(sym);
+			if (!(sym->flags & SYMBOL_WRITE))
+				goto next;
+			sym->flags &= ~SYMBOL_WRITE;
+			type = sym->type;
+			if (type == S_TRISTATE) {
+				sym_calc_value(modules_sym);
+				if (S_TRI(modules_sym->curr) == no)
+					type = S_BOOLEAN;
+			}
+			switch (type) {
+			case S_BOOLEAN:
+			case S_TRISTATE:
+				switch (sym_get_tristate_value(sym)) {
+				case no:
+					fprintf(out, "# CONFIG_%s is not set\n", sym->name);
+					fprintf(out_h, "#undef CONFIG_%s\n", sym->name);
+					break;
+				case mod:
+					fprintf(out, "CONFIG_%s=m\n", sym->name);
+					fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name);
+					break;
+				case yes:
+					fprintf(out, "CONFIG_%s=y\n", sym->name);
+					fprintf(out_h, "#define CONFIG_%s 1\n", sym->name);
+					break;
+				}
+				break;
+			case S_STRING:
+				// fix me
+				str = sym_get_string_value(sym);
+				fprintf(out, "CONFIG_%s=\"", sym->name);
+				fprintf(out_h, "#define CONFIG_%s \"", sym->name);
+				do {
+					l = strcspn(str, "\"\\");
+					if (l) {
+						fwrite(str, l, 1, out);
+						fwrite(str, l, 1, out_h);
+					}
+					str += l;
+					while (*str == '\\' || *str == '"') {
+						fprintf(out, "\\%c", *str);
+						fprintf(out_h, "\\%c", *str);
+						str++;
+					}
+				} while (*str);
+				fputs("\"\n", out);
+				fputs("\"\n", out_h);
+				break;
+			case S_HEX:
+				str = sym_get_string_value(sym);
+				if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
+					fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
+					fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str);
+					break;
+				}
+			case S_INT:
+				str = sym_get_string_value(sym);
+				fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
+				fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str);
+				break;
+			}
+		}
+
+	next:
+		if (menu->list) {
+			menu = menu->list;
+			continue;
+		}
+		if (menu->next)
+			menu = menu->next;
+		else while ((menu = menu->parent)) {
+			if (menu->next) {
+				menu = menu->next;
+				break;
+			}
+		}
+	}
+	fclose(out);
+	fclose(out_h);
+
+	if (!name) {
+		rename(".tmpconfig.h", "include/linux/autoconf.h");
+		name = conf_def_filename;
+		file_write_dep(NULL);
+	} else
+		unlink(".tmpconfig.h");
+
+	sprintf(oldname, "%s.old", name);
+	rename(name, oldname);
+	if (rename(".tmpconfig", name))
+		return 1;
+	strcpy(conf_filename, name);
+
+	sym_change_count = 0;
+
+	return 0;
+}
diff --git a/scripts/kconfig/expr.c b/scripts/kconfig/expr.c
new file mode 100644
index 000000000000..d1af2a5810df
--- /dev/null
+++ b/scripts/kconfig/expr.c
@@ -0,0 +1,1054 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+struct expr *expr_alloc_symbol(struct symbol *sym)
+{
+	struct expr *e = malloc(sizeof(*e));
+	memset(e, 0, sizeof(*e));
+	e->type = E_SYMBOL;
+	e->left.sym = sym;
+	return e;
+}
+
+struct expr *expr_alloc_one(enum expr_type type, struct expr *ce)
+{
+	struct expr *e = malloc(sizeof(*e));
+	memset(e, 0, sizeof(*e));
+	e->type = type;
+	e->left.expr = ce;
+	return e;
+}
+
+struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2)
+{
+	struct expr *e = malloc(sizeof(*e));
+	memset(e, 0, sizeof(*e));
+	e->type = type;
+	e->left.expr = e1;
+	e->right.expr = e2;
+	return e;
+}
+
+struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2)
+{
+	struct expr *e = malloc(sizeof(*e));
+	memset(e, 0, sizeof(*e));
+	e->type = type;
+	e->left.sym = s1;
+	e->right.sym = s2;
+	return e;
+}
+
+struct expr *expr_alloc_and(struct expr *e1, struct expr *e2)
+{
+	if (!e1)
+		return e2;
+	return e2 ? expr_alloc_two(E_AND, e1, e2) : e1;
+}
+
+struct expr *expr_copy(struct expr *org)
+{
+	struct expr *e;
+
+	if (!org)
+		return NULL;
+
+	e = malloc(sizeof(*org));
+	memcpy(e, org, sizeof(*org));
+	switch (org->type) {
+	case E_SYMBOL:
+		e->left = org->left;
+		break;
+	case E_NOT:
+		e->left.expr = expr_copy(org->left.expr);
+		break;
+	case E_EQUAL:
+	case E_UNEQUAL:
+		e->left.sym = org->left.sym;
+		e->right.sym = org->right.sym;
+		break;
+	case E_AND:
+	case E_OR:
+	case E_CHOICE:
+		e->left.expr = expr_copy(org->left.expr);
+		e->right.expr = expr_copy(org->right.expr);
+		break;
+	default:
+		printf("can't copy type %d\n", e->type);
+		free(e);
+		e = NULL;
+		break;
+	}
+
+	return e;
+}
+
+void expr_free(struct expr *e)
+{
+	if (!e)
+		return;
+
+	switch (e->type) {
+	case E_SYMBOL:
+		break;
+	case E_NOT:
+		expr_free(e->left.expr);
+		return;
+	case E_EQUAL:
+	case E_UNEQUAL:
+		break;
+	case E_OR:
+	case E_AND:
+		expr_free(e->left.expr);
+		expr_free(e->right.expr);
+		break;
+	default:
+		printf("how to free type %d?\n", e->type);
+		break;
+	}
+	free(e);
+}
+
+static int trans_count;
+
+#define e1 (*ep1)
+#define e2 (*ep2)
+
+static void __expr_eliminate_eq(enum expr_type type, struct expr **ep1, struct expr **ep2)
+{
+	if (e1->type == type) {
+		__expr_eliminate_eq(type, &e1->left.expr, &e2);
+		__expr_eliminate_eq(type, &e1->right.expr, &e2);
+		return;
+	}
+	if (e2->type == type) {
+		__expr_eliminate_eq(type, &e1, &e2->left.expr);
+		__expr_eliminate_eq(type, &e1, &e2->right.expr);
+		return;
+	}
+	if (e1->type == E_SYMBOL && e2->type == E_SYMBOL &&
+	    e1->left.sym == e2->left.sym && (e1->left.sym->flags & (SYMBOL_YES|SYMBOL_NO)))
+		return;
+	if (!expr_eq(e1, e2))
+		return;
+	trans_count++;
+	expr_free(e1); expr_free(e2);
+	switch (type) {
+	case E_OR:
+		e1 = expr_alloc_symbol(&symbol_no);
+		e2 = expr_alloc_symbol(&symbol_no);
+		break;
+	case E_AND:
+		e1 = expr_alloc_symbol(&symbol_yes);
+		e2 = expr_alloc_symbol(&symbol_yes);
+		break;
+	default:
+		;
+	}
+}
+
+void expr_eliminate_eq(struct expr **ep1, struct expr **ep2)
+{
+	if (!e1 || !e2 || e1->type != e2->type)
+		return;
+	__expr_eliminate_eq(e1->type, ep1, ep2);
+	e1 = expr_eliminate_yn(e1);
+	e2 = expr_eliminate_yn(e2);
+}
+
+#undef e1
+#undef e2
+
+int expr_eq(struct expr *e1, struct expr *e2)
+{
+	int res, old_count;
+
+	if (e1->type != e2->type)
+		return 0;
+	switch (e1->type) {
+	case E_EQUAL:
+	case E_UNEQUAL:
+		return e1->left.sym == e2->left.sym && e1->right.sym == e2->right.sym;
+	case E_SYMBOL:
+		return e1->left.sym == e2->left.sym;
+	case E_NOT:
+		return expr_eq(e1->left.expr, e2->left.expr);
+	case E_AND:
+	case E_OR:
+		e1 = expr_copy(e1);
+		e2 = expr_copy(e2);
+		old_count = trans_count;
+		expr_eliminate_eq(&e1, &e2);
+		res = (e1->type == E_SYMBOL && e2->type == E_SYMBOL &&
+		       e1->left.sym == e2->left.sym);
+		expr_free(e1);
+		expr_free(e2);
+		trans_count = old_count;
+		return res;
+	case E_CHOICE:
+	case E_NONE:
+		/* panic */;
+	}
+
+	print_expr(0, e1, 0);
+	printf(" = ");
+	print_expr(0, e2, 0);
+	printf(" ?\n");
+
+	return 0;
+}
+
+struct expr *expr_eliminate_yn(struct expr *e)
+{
+	struct expr *tmp;
+
+	if (e) switch (e->type) {
+	case E_AND:
+		e->left.expr = expr_eliminate_yn(e->left.expr);
+		e->right.expr = expr_eliminate_yn(e->right.expr);
+		if (e->left.expr->type == E_SYMBOL) {
+			if (e->left.expr->left.sym == &symbol_no) {
+				expr_free(e->left.expr);
+				expr_free(e->right.expr);
+				e->type = E_SYMBOL;
+				e->left.sym = &symbol_no;
+				e->right.expr = NULL;
+				return e;
+			} else if (e->left.expr->left.sym == &symbol_yes) {
+				free(e->left.expr);
+				tmp = e->right.expr;
+				*e = *(e->right.expr);
+				free(tmp);
+				return e;
+			}
+		}
+		if (e->right.expr->type == E_SYMBOL) {
+			if (e->right.expr->left.sym == &symbol_no) {
+				expr_free(e->left.expr);
+				expr_free(e->right.expr);
+				e->type = E_SYMBOL;
+				e->left.sym = &symbol_no;
+				e->right.expr = NULL;
+				return e;
+			} else if (e->right.expr->left.sym == &symbol_yes) {
+				free(e->right.expr);
+				tmp = e->left.expr;
+				*e = *(e->left.expr);
+				free(tmp);
+				return e;
+			}
+		}
+		break;
+	case E_OR:
+		e->left.expr = expr_eliminate_yn(e->left.expr);
+		e->right.expr = expr_eliminate_yn(e->right.expr);
+		if (e->left.expr->type == E_SYMBOL) {
+			if (e->left.expr->left.sym == &symbol_no) {
+				free(e->left.expr);
+				tmp = e->right.expr;
+				*e = *(e->right.expr);
+				free(tmp);
+				return e;
+			} else if (e->left.expr->left.sym == &symbol_yes) {
+				expr_free(e->left.expr);
+				expr_free(e->right.expr);
+				e->type = E_SYMBOL;
+				e->left.sym = &symbol_yes;
+				e->right.expr = NULL;
+				return e;
+			}
+		}
+		if (e->right.expr->type == E_SYMBOL) {
+			if (e->right.expr->left.sym == &symbol_no) {
+				free(e->right.expr);
+				tmp = e->left.expr;
+				*e = *(e->left.expr);
+				free(tmp);
+				return e;
+			} else if (e->right.expr->left.sym == &symbol_yes) {
+				expr_free(e->left.expr);
+				expr_free(e->right.expr);
+				e->type = E_SYMBOL;
+				e->left.sym = &symbol_yes;
+				e->right.expr = NULL;
+				return e;
+			}
+		}
+		break;
+	default:
+		;
+	}
+	return e;
+}
+
+/*
+ * bool FOO!=n => FOO
+ */
+struct expr *expr_trans_bool(struct expr *e)
+{
+	if (!e)
+		return NULL;
+	switch (e->type) {
+	case E_AND:
+	case E_OR:
+	case E_NOT:
+		e->left.expr = expr_trans_bool(e->left.expr);
+		e->right.expr = expr_trans_bool(e->right.expr);
+		break;
+	case E_UNEQUAL:
+		// FOO!=n -> FOO
+		if (e->left.sym->type == S_TRISTATE) {
+			if (e->right.sym == &symbol_no) {
+				e->type = E_SYMBOL;
+				e->right.sym = NULL;
+			}
+		}
+		break;
+	default:
+		;
+	}
+	return e;
+}
+
+/*
+ * e1 || e2 -> ?
+ */
+struct expr *expr_join_or(struct expr *e1, struct expr *e2)
+{
+	struct expr *tmp;
+	struct symbol *sym1, *sym2;
+
+	if (expr_eq(e1, e2))
+		return expr_copy(e1);
+	if (e1->type != E_EQUAL && e1->type != E_UNEQUAL && e1->type != E_SYMBOL && e1->type != E_NOT)
+		return NULL;
+	if (e2->type != E_EQUAL && e2->type != E_UNEQUAL && e2->type != E_SYMBOL && e2->type != E_NOT)
+		return NULL;
+	if (e1->type == E_NOT) {
+		tmp = e1->left.expr;
+		if (tmp->type != E_EQUAL && tmp->type != E_UNEQUAL && tmp->type != E_SYMBOL)
+			return NULL;
+		sym1 = tmp->left.sym;
+	} else
+		sym1 = e1->left.sym;
+	if (e2->type == E_NOT) {
+		if (e2->left.expr->type != E_SYMBOL)
+			return NULL;
+		sym2 = e2->left.expr->left.sym;
+	} else
+		sym2 = e2->left.sym;
+	if (sym1 != sym2)
+		return NULL;
+	if (sym1->type != S_BOOLEAN && sym1->type != S_TRISTATE)
+		return NULL;
+	if (sym1->type == S_TRISTATE) {
+		if (e1->type == E_EQUAL && e2->type == E_EQUAL &&
+		    ((e1->right.sym == &symbol_yes && e2->right.sym == &symbol_mod) ||
+		     (e1->right.sym == &symbol_mod && e2->right.sym == &symbol_yes))) {
+			// (a='y') || (a='m') -> (a!='n')
+			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_no);
+		}
+		if (e1->type == E_EQUAL && e2->type == E_EQUAL &&
+		    ((e1->right.sym == &symbol_yes && e2->right.sym == &symbol_no) ||
+		     (e1->right.sym == &symbol_no && e2->right.sym == &symbol_yes))) {
+			// (a='y') || (a='n') -> (a!='m')
+			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_mod);
+		}
+		if (e1->type == E_EQUAL && e2->type == E_EQUAL &&
+		    ((e1->right.sym == &symbol_mod && e2->right.sym == &symbol_no) ||
+		     (e1->right.sym == &symbol_no && e2->right.sym == &symbol_mod))) {
+			// (a='m') || (a='n') -> (a!='y')
+			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_yes);
+		}
+	}
+	if (sym1->type == S_BOOLEAN && sym1 == sym2) {
+		if ((e1->type == E_NOT && e1->left.expr->type == E_SYMBOL && e2->type == E_SYMBOL) ||
+		    (e2->type == E_NOT && e2->left.expr->type == E_SYMBOL && e1->type == E_SYMBOL))
+			return expr_alloc_symbol(&symbol_yes);
+	}
+
+	printf("optimize ");
+	print_expr(0, e1, 0);
+	printf(" || ");
+	print_expr(0, e2, 0);
+	printf(" ?\n");
+	return NULL;
+}
+
+struct expr *expr_join_and(struct expr *e1, struct expr *e2)
+{
+	struct expr *tmp;
+	struct symbol *sym1, *sym2;
+
+	if (expr_eq(e1, e2))
+		return expr_copy(e1);
+	if (e1->type != E_EQUAL && e1->type != E_UNEQUAL && e1->type != E_SYMBOL && e1->type != E_NOT)
+		return NULL;
+	if (e2->type != E_EQUAL && e2->type != E_UNEQUAL && e2->type != E_SYMBOL && e2->type != E_NOT)
+		return NULL;
+	if (e1->type == E_NOT) {
+		tmp = e1->left.expr;
+		if (tmp->type != E_EQUAL && tmp->type != E_UNEQUAL && tmp->type != E_SYMBOL)
+			return NULL;
+		sym1 = tmp->left.sym;
+	} else
+		sym1 = e1->left.sym;
+	if (e2->type == E_NOT) {
+		if (e2->left.expr->type != E_SYMBOL)
+			return NULL;
+		sym2 = e2->left.expr->left.sym;
+	} else
+		sym2 = e2->left.sym;
+	if (sym1 != sym2)
+		return NULL;
+	if (sym1->type != S_BOOLEAN && sym1->type != S_TRISTATE)
+		return NULL;
+
+	if ((e1->type == E_SYMBOL && e2->type == E_EQUAL && e2->right.sym == &symbol_yes) ||
+	    (e2->type == E_SYMBOL && e1->type == E_EQUAL && e1->right.sym == &symbol_yes))
+		// (a) && (a='y') -> (a='y')
+		return expr_alloc_comp(E_EQUAL, sym1, &symbol_yes);
+
+	if ((e1->type == E_SYMBOL && e2->type == E_UNEQUAL && e2->right.sym == &symbol_no) ||
+	    (e2->type == E_SYMBOL && e1->type == E_UNEQUAL && e1->right.sym == &symbol_no))
+		// (a) && (a!='n') -> (a)
+		return expr_alloc_symbol(sym1);
+
+	if (sym1->type == S_TRISTATE) {
+		if (e1->type == E_EQUAL && e2->type == E_UNEQUAL) {
+			// (a='b') && (a!='c') -> 'b'='c' ? 'n' : a='b'
+			sym2 = e1->right.sym;
+			if ((e2->right.sym->flags & SYMBOL_CONST) && (sym2->flags & SYMBOL_CONST))
+				return sym2 != e2->right.sym ? expr_alloc_comp(E_EQUAL, sym1, sym2)
+							     : expr_alloc_symbol(&symbol_no);
+		}
+		if (e1->type == E_UNEQUAL && e2->type == E_EQUAL) {
+			// (a='b') && (a!='c') -> 'b'='c' ? 'n' : a='b'
+			sym2 = e2->right.sym;
+			if ((e1->right.sym->flags & SYMBOL_CONST) && (sym2->flags & SYMBOL_CONST))
+				return sym2 != e1->right.sym ? expr_alloc_comp(E_EQUAL, sym1, sym2)
+							     : expr_alloc_symbol(&symbol_no);
+		}
+		if (e1->type == E_UNEQUAL && e2->type == E_UNEQUAL &&
+			   ((e1->right.sym == &symbol_yes && e2->right.sym == &symbol_no) ||
+			    (e1->right.sym == &symbol_no && e2->right.sym == &symbol_yes)))
+			// (a!='y') && (a!='n') -> (a='m')
+			return expr_alloc_comp(E_EQUAL, sym1, &symbol_mod);
+
+		if (e1->type == E_UNEQUAL && e2->type == E_UNEQUAL &&
+			   ((e1->right.sym == &symbol_yes && e2->right.sym == &symbol_mod) ||
+			    (e1->right.sym == &symbol_mod && e2->right.sym == &symbol_yes)))
+			// (a!='y') && (a!='m') -> (a='n')
+			return expr_alloc_comp(E_EQUAL, sym1, &symbol_no);
+
+		if (e1->type == E_UNEQUAL && e2->type == E_UNEQUAL &&
+			   ((e1->right.sym == &symbol_mod && e2->right.sym == &symbol_no) ||
+			    (e1->right.sym == &symbol_no && e2->right.sym == &symbol_mod)))
+			// (a!='m') && (a!='n') -> (a='m')
+			return expr_alloc_comp(E_EQUAL, sym1, &symbol_yes);
+
+		if ((e1->type == E_SYMBOL && e2->type == E_EQUAL && e2->right.sym == &symbol_mod) ||
+		    (e2->type == E_SYMBOL && e1->type == E_EQUAL && e1->right.sym == &symbol_mod) ||
+		    (e1->type == E_SYMBOL && e2->type == E_UNEQUAL && e2->right.sym == &symbol_yes) ||
+		    (e2->type == E_SYMBOL && e1->type == E_UNEQUAL && e1->right.sym == &symbol_yes))
+			return NULL;
+	}
+	printf("optimize ");
+	print_expr(0, e1, 0);
+	printf(" && ");
+	print_expr(0, e2, 0);
+	printf(" ?\n");
+	return NULL;
+}
+
+static void expr_eliminate_dups1(enum expr_type type, struct expr **ep1, struct expr **ep2)
+{
+#define e1 (*ep1)
+#define e2 (*ep2)
+	struct expr *tmp;
+
+	if (e1->type == type) {
+		expr_eliminate_dups1(type, &e1->left.expr, &e2);
+		expr_eliminate_dups1(type, &e1->right.expr, &e2);
+		return;
+	}
+	if (e2->type == type) {
+		expr_eliminate_dups1(type, &e1, &e2->left.expr);
+		expr_eliminate_dups1(type, &e1, &e2->right.expr);
+		return;
+	}
+	if (e1 == e2)
+		return;
+
+	switch (e1->type) {
+	case E_OR: case E_AND:
+		expr_eliminate_dups1(e1->type, &e1, &e1);
+	default:
+		;
+	}
+
+	switch (type) {
+	case E_OR:
+		tmp = expr_join_or(e1, e2);
+		if (tmp) {
+			expr_free(e1); expr_free(e2);
+			e1 = expr_alloc_symbol(&symbol_no);
+			e2 = tmp;
+			trans_count++;
+		}
+		break;
+	case E_AND:
+		tmp = expr_join_and(e1, e2);
+		if (tmp) {
+			expr_free(e1); expr_free(e2);
+			e1 = expr_alloc_symbol(&symbol_yes);
+			e2 = tmp;
+			trans_count++;
+		}
+		break;
+	default:
+		;
+	}
+#undef e1
+#undef e2
+}
+
+static void expr_eliminate_dups2(enum expr_type type, struct expr **ep1, struct expr **ep2)
+{
+#define e1 (*ep1)
+#define e2 (*ep2)
+	struct expr *tmp, *tmp1, *tmp2;
+
+	if (e1->type == type) {
+		expr_eliminate_dups2(type, &e1->left.expr, &e2);
+		expr_eliminate_dups2(type, &e1->right.expr, &e2);
+		return;
+	}
+	if (e2->type == type) {
+		expr_eliminate_dups2(type, &e1, &e2->left.expr);
+		expr_eliminate_dups2(type, &e1, &e2->right.expr);
+	}
+	if (e1 == e2)
+		return;
+
+	switch (e1->type) {
+	case E_OR:
+		expr_eliminate_dups2(e1->type, &e1, &e1);
+		// (FOO || BAR) && (!FOO && !BAR) -> n
+		tmp1 = expr_transform(expr_alloc_one(E_NOT, expr_copy(e1)));
+		tmp2 = expr_copy(e2);
+		tmp = expr_extract_eq_and(&tmp1, &tmp2);
+		if (expr_is_yes(tmp1)) {
+			expr_free(e1);
+			e1 = expr_alloc_symbol(&symbol_no);
+			trans_count++;
+		}
+		expr_free(tmp2);
+		expr_free(tmp1);
+		expr_free(tmp);
+		break;
+	case E_AND:
+		expr_eliminate_dups2(e1->type, &e1, &e1);
+		// (FOO && BAR) || (!FOO || !BAR) -> y
+		tmp1 = expr_transform(expr_alloc_one(E_NOT, expr_copy(e1)));
+		tmp2 = expr_copy(e2);
+		tmp = expr_extract_eq_or(&tmp1, &tmp2);
+		if (expr_is_no(tmp1)) {
+			expr_free(e1);
+			e1 = expr_alloc_symbol(&symbol_yes);
+			trans_count++;
+		}
+		expr_free(tmp2);
+		expr_free(tmp1);
+		expr_free(tmp);
+		break;
+	default:
+		;
+	}
+#undef e1
+#undef e2
+}
+
+struct expr *expr_eliminate_dups(struct expr *e)
+{
+	int oldcount;
+	if (!e)
+		return e;
+
+	oldcount = trans_count;
+	while (1) {
+		trans_count = 0;
+		switch (e->type) {
+		case E_OR: case E_AND:
+			expr_eliminate_dups1(e->type, &e, &e);
+			expr_eliminate_dups2(e->type, &e, &e);
+		default:
+			;
+		}
+		if (!trans_count)
+			break;
+		e = expr_eliminate_yn(e);
+	}
+	trans_count = oldcount;
+	return e;
+}
+
+struct expr *expr_transform(struct expr *e)
+{
+	struct expr *tmp;
+
+	if (!e)
+		return NULL;
+	switch (e->type) {
+	case E_EQUAL:
+	case E_UNEQUAL:
+	case E_SYMBOL:
+	case E_CHOICE:
+		break;
+	default:
+		e->left.expr = expr_transform(e->left.expr);
+		e->right.expr = expr_transform(e->right.expr);
+	}
+
+	switch (e->type) {
+	case E_EQUAL:
+		if (e->left.sym->type != S_BOOLEAN)
+			break;
+		if (e->right.sym == &symbol_no) {
+			e->type = E_NOT;
+			e->left.expr = expr_alloc_symbol(e->left.sym);
+			e->right.sym = NULL;
+			break;
+		}
+		if (e->right.sym == &symbol_mod) {
+			printf("boolean symbol %s tested for 'm'? test forced to 'n'\n", e->left.sym->name);
+			e->type = E_SYMBOL;
+			e->left.sym = &symbol_no;
+			e->right.sym = NULL;
+			break;
+		}
+		if (e->right.sym == &symbol_yes) {
+			e->type = E_SYMBOL;
+			e->right.sym = NULL;
+			break;
+		}
+		break;
+	case E_UNEQUAL:
+		if (e->left.sym->type != S_BOOLEAN)
+			break;
+		if (e->right.sym == &symbol_no) {
+			e->type = E_SYMBOL;
+			e->right.sym = NULL;
+			break;
+		}
+		if (e->right.sym == &symbol_mod) {
+			printf("boolean symbol %s tested for 'm'? test forced to 'y'\n", e->left.sym->name);
+			e->type = E_SYMBOL;
+			e->left.sym = &symbol_yes;
+			e->right.sym = NULL;
+			break;
+		}
+		if (e->right.sym == &symbol_yes) {
+			e->type = E_NOT;
+			e->left.expr = expr_alloc_symbol(e->left.sym);
+			e->right.sym = NULL;
+			break;
+		}
+		break;
+	case E_NOT:
+		switch (e->left.expr->type) {
+		case E_NOT:
+			// !!a -> a
+			tmp = e->left.expr->left.expr;
+			free(e->left.expr);
+			free(e);
+			e = tmp;
+			e = expr_transform(e);
+			break;
+		case E_EQUAL:
+		case E_UNEQUAL:
+			// !a='x' -> a!='x'
+			tmp = e->left.expr;
+			free(e);
+			e = tmp;
+			e->type = e->type == E_EQUAL ? E_UNEQUAL : E_EQUAL;
+			break;
+		case E_OR:
+			// !(a || b) -> !a && !b
+			tmp = e->left.expr;
+			e->type = E_AND;
+			e->right.expr = expr_alloc_one(E_NOT, tmp->right.expr);
+			tmp->type = E_NOT;
+			tmp->right.expr = NULL;
+			e = expr_transform(e);
+			break;
+		case E_AND:
+			// !(a && b) -> !a || !b
+			tmp = e->left.expr;
+			e->type = E_OR;
+			e->right.expr = expr_alloc_one(E_NOT, tmp->right.expr);
+			tmp->type = E_NOT;
+			tmp->right.expr = NULL;
+			e = expr_transform(e);
+			break;
+		case E_SYMBOL:
+			if (e->left.expr->left.sym == &symbol_yes) {
+				// !'y' -> 'n'
+				tmp = e->left.expr;
+				free(e);
+				e = tmp;
+				e->type = E_SYMBOL;
+				e->left.sym = &symbol_no;
+				break;
+			}
+			if (e->left.expr->left.sym == &symbol_mod) {
+				// !'m' -> 'm'
+				tmp = e->left.expr;
+				free(e);
+				e = tmp;
+				e->type = E_SYMBOL;
+				e->left.sym = &symbol_mod;
+				break;
+			}
+			if (e->left.expr->left.sym == &symbol_no) {
+				// !'n' -> 'y'
+				tmp = e->left.expr;
+				free(e);
+				e = tmp;
+				e->type = E_SYMBOL;
+				e->left.sym = &symbol_yes;
+				break;
+			}
+			break;
+		default:
+			;
+		}
+		break;
+	default:
+		;
+	}
+	return e;
+}
+
+int expr_contains_symbol(struct expr *dep, struct symbol *sym)
+{
+	if (!dep)
+		return 0;
+
+	switch (dep->type) {
+	case E_AND:
+	case E_OR:
+		return expr_contains_symbol(dep->left.expr, sym) ||
+		       expr_contains_symbol(dep->right.expr, sym);
+	case E_SYMBOL:
+		return dep->left.sym == sym;
+	case E_EQUAL:
+	case E_UNEQUAL:
+		return dep->left.sym == sym ||
+		       dep->right.sym == sym;
+	case E_NOT:
+		return expr_contains_symbol(dep->left.expr, sym);
+	default:
+		;
+	}
+	return 0;
+}
+
+bool expr_depends_symbol(struct expr *dep, struct symbol *sym)
+{
+	if (!dep)
+		return false;
+
+	switch (dep->type) {
+	case E_AND:
+		return expr_depends_symbol(dep->left.expr, sym) ||
+		       expr_depends_symbol(dep->right.expr, sym);
+	case E_SYMBOL:
+		return dep->left.sym == sym;
+	case E_EQUAL:
+		if (dep->left.sym == sym) {
+			if (dep->right.sym == &symbol_yes || dep->right.sym == &symbol_mod)
+				return true;
+		}
+		break;
+	case E_UNEQUAL:
+		if (dep->left.sym == sym) {
+			if (dep->right.sym == &symbol_no)
+				return true;
+		}
+		break;
+	default:
+		;
+	}
+ 	return false;
+}
+
+struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2)
+{
+	struct expr *tmp = NULL;
+	expr_extract_eq(E_AND, &tmp, ep1, ep2);
+	if (tmp) {
+		*ep1 = expr_eliminate_yn(*ep1);
+		*ep2 = expr_eliminate_yn(*ep2);
+	}
+	return tmp;
+}
+
+struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2)
+{
+	struct expr *tmp = NULL;
+	expr_extract_eq(E_OR, &tmp, ep1, ep2);
+	if (tmp) {
+		*ep1 = expr_eliminate_yn(*ep1);
+		*ep2 = expr_eliminate_yn(*ep2);
+	}
+	return tmp;
+}
+
+void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2)
+{
+#define e1 (*ep1)
+#define e2 (*ep2)
+	if (e1->type == type) {
+		expr_extract_eq(type, ep, &e1->left.expr, &e2);
+		expr_extract_eq(type, ep, &e1->right.expr, &e2);
+		return;
+	}
+	if (e2->type == type) {
+		expr_extract_eq(type, ep, ep1, &e2->left.expr);
+		expr_extract_eq(type, ep, ep1, &e2->right.expr);
+		return;
+	}
+	if (expr_eq(e1, e2)) {
+		*ep = *ep ? expr_alloc_two(type, *ep, e1) : e1;
+		expr_free(e2);
+		if (type == E_AND) {
+			e1 = expr_alloc_symbol(&symbol_yes);
+			e2 = expr_alloc_symbol(&symbol_yes);
+		} else if (type == E_OR) {
+			e1 = expr_alloc_symbol(&symbol_no);
+			e2 = expr_alloc_symbol(&symbol_no);
+		}
+	}
+#undef e1
+#undef e2
+}
+
+struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym)
+{
+	struct expr *e1, *e2;
+
+	if (!e) {
+		e = expr_alloc_symbol(sym);
+		if (type == E_UNEQUAL)
+			e = expr_alloc_one(E_NOT, e);
+		return e;
+	}
+	switch (e->type) {
+	case E_AND:
+		e1 = expr_trans_compare(e->left.expr, E_EQUAL, sym);
+		e2 = expr_trans_compare(e->right.expr, E_EQUAL, sym);
+		if (sym == &symbol_yes)
+			e = expr_alloc_two(E_AND, e1, e2);
+		if (sym == &symbol_no)
+			e = expr_alloc_two(E_OR, e1, e2);
+		if (type == E_UNEQUAL)
+			e = expr_alloc_one(E_NOT, e);
+		return e;
+	case E_OR:
+		e1 = expr_trans_compare(e->left.expr, E_EQUAL, sym);
+		e2 = expr_trans_compare(e->right.expr, E_EQUAL, sym);
+		if (sym == &symbol_yes)
+			e = expr_alloc_two(E_OR, e1, e2);
+		if (sym == &symbol_no)
+			e = expr_alloc_two(E_AND, e1, e2);
+		if (type == E_UNEQUAL)
+			e = expr_alloc_one(E_NOT, e);
+		return e;
+	case E_NOT:
+		return expr_trans_compare(e->left.expr, type == E_EQUAL ? E_UNEQUAL : E_EQUAL, sym);
+	case E_UNEQUAL:
+	case E_EQUAL:
+		if (type == E_EQUAL) {
+			if (sym == &symbol_yes)
+				return expr_copy(e);
+			if (sym == &symbol_mod)
+				return expr_alloc_symbol(&symbol_no);
+			if (sym == &symbol_no)
+				return expr_alloc_one(E_NOT, expr_copy(e));
+		} else {
+			if (sym == &symbol_yes)
+				return expr_alloc_one(E_NOT, expr_copy(e));
+			if (sym == &symbol_mod)
+				return expr_alloc_symbol(&symbol_yes);
+			if (sym == &symbol_no)
+				return expr_copy(e);
+		}
+		break;
+	case E_SYMBOL:
+		return expr_alloc_comp(type, e->left.sym, sym);
+	case E_CHOICE:
+	case E_NONE:
+		/* panic */;
+	}
+	return NULL;
+}
+
+tristate expr_calc_value(struct expr *e)
+{
+	tristate val1, val2;
+	const char *str1, *str2;
+
+	if (!e)
+		return yes;
+
+	switch (e->type) {
+	case E_SYMBOL:
+		sym_calc_value(e->left.sym);
+		return S_TRI(e->left.sym->curr);
+	case E_AND:
+		val1 = expr_calc_value(e->left.expr);
+		val2 = expr_calc_value(e->right.expr);
+		return E_AND(val1, val2);
+	case E_OR:
+		val1 = expr_calc_value(e->left.expr);
+		val2 = expr_calc_value(e->right.expr);
+		return E_OR(val1, val2);
+	case E_NOT:
+		val1 = expr_calc_value(e->left.expr);
+		return E_NOT(val1);
+	case E_EQUAL:
+		sym_calc_value(e->left.sym);
+		sym_calc_value(e->right.sym);
+		str1 = sym_get_string_value(e->left.sym);
+		str2 = sym_get_string_value(e->right.sym);
+		return !strcmp(str1, str2) ? yes : no;
+	case E_UNEQUAL:
+		sym_calc_value(e->left.sym);
+		sym_calc_value(e->right.sym);
+		str1 = sym_get_string_value(e->left.sym);
+		str2 = sym_get_string_value(e->right.sym);
+		return !strcmp(str1, str2) ? no : yes;
+	default:
+		printf("expr_calc_value: %d?\n", e->type);
+		return no;
+	}
+}
+
+int expr_compare_type(enum expr_type t1, enum expr_type t2)
+{
+#if 0
+	return 1;
+#else
+	if (t1 == t2)
+		return 0;
+	switch (t1) {
+	case E_EQUAL:
+	case E_UNEQUAL:
+		if (t2 == E_NOT)
+			return 1;
+	case E_NOT:
+		if (t2 == E_AND)
+			return 1;
+	case E_AND:
+		if (t2 == E_OR)
+			return 1;
+	case E_OR:
+		if (t2 == E_CHOICE)
+			return 1;
+	case E_CHOICE:
+		if (t2 == 0)
+			return 1;
+	default:
+		return -1;
+	}
+	printf("[%dgt%d?]", t1, t2);
+	return 0;
+#endif
+}
+
+void expr_print(struct expr *e, void (*fn)(void *, const char *), void *data, int prevtoken)
+{
+	if (!e) {
+		fn(data, "y");
+		return;
+	}
+
+	if (expr_compare_type(prevtoken, e->type) > 0)
+		fn(data, "(");
+	switch (e->type) {
+	case E_SYMBOL:
+		if (e->left.sym->name)
+			fn(data, e->left.sym->name);
+		else
+			fn(data, "<choice>");
+		break;
+	case E_NOT:
+		fn(data, "!");
+		expr_print(e->left.expr, fn, data, E_NOT);
+		break;
+	case E_EQUAL:
+		fn(data, e->left.sym->name);
+		fn(data, "=");
+		fn(data, e->right.sym->name);
+		break;
+	case E_UNEQUAL:
+		fn(data, e->left.sym->name);
+		fn(data, "!=");
+		fn(data, e->right.sym->name);
+		break;
+	case E_OR:
+		expr_print(e->left.expr, fn, data, E_OR);
+		fn(data, " || ");
+		expr_print(e->right.expr, fn, data, E_OR);
+		break;
+	case E_AND:
+		expr_print(e->left.expr, fn, data, E_AND);
+		fn(data, " && ");
+		expr_print(e->right.expr, fn, data, E_AND);
+		break;
+	case E_CHOICE:
+		if (e->left.expr) {
+			expr_print(e->left.expr, fn, data, E_CHOICE);
+			fn(data, " ^ ");
+		}
+		fn(data, e->right.sym->name);
+		break;
+	default:
+	  {
+		char buf[32];
+		sprintf(buf, "<unknown type %d>", e->type);
+		fn(data, buf);
+		break;
+	  }
+	}
+	if (expr_compare_type(prevtoken, e->type) > 0)
+		fn(data, ")");
+}
+
+static void expr_print_file_helper(void *data, const char *str)
+{
+	fwrite(str, strlen(str), 1, data);
+}
+
+void expr_fprint(struct expr *e, FILE *out)
+{
+	expr_print(e, expr_print_file_helper, out, E_NONE);
+}
+
+void print_expr(int mask, struct expr *e, int prevtoken)
+{
+	if (!(cdebug & mask))
+		return;
+	expr_fprint(e, stdout);
+}
+
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
new file mode 100644
index 000000000000..fd9c32a7e6d8
--- /dev/null
+++ b/scripts/kconfig/expr.h
@@ -0,0 +1,242 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#ifndef EXPR_H
+#define EXPR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#ifndef __cplusplus
+#include <stdbool.h>
+#endif
+
+struct file {
+	struct file *next;
+	struct file *parent;
+#ifdef CML1
+	struct statement *stmt;
+	struct statement *last_stmt;
+#endif
+	char *name;
+	int lineno;
+	int flags;
+};
+
+#define FILE_BUSY		0x0001
+#define FILE_SCANNED		0x0002
+#define FILE_PRINTED		0x0004
+
+typedef enum tristate {
+	no, mod, yes
+} tristate;
+
+enum expr_type {
+	E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_CHOICE, E_SYMBOL
+};
+
+union expr_data {
+	struct expr *expr;
+	struct symbol *sym;
+};
+
+struct expr {
+#ifdef CML1
+	int token;
+#else
+	enum expr_type type;
+#endif
+	union expr_data left, right;
+};
+
+#define E_TRI(ev)	((ev).tri)
+#define E_EXPR(ev)	((ev).expr)
+#define E_CALC(ev)	(E_TRI(ev) = expr_calc_value(E_EXPR(ev)))
+
+#define E_OR(dep1, dep2)	(((dep1)>(dep2))?(dep1):(dep2))
+#define E_AND(dep1, dep2)	(((dep1)<(dep2))?(dep1):(dep2))
+#define E_NOT(dep)		(2-(dep))
+
+struct expr_value {
+	struct expr *expr;
+	tristate tri;
+};
+
+#define S_VAL(sv)	((sv).value)
+#define S_TRI(sv)	((sv).tri)
+#define S_EQ(sv1, sv2)	(S_VAL(sv1) == S_VAL(sv2) || !strcmp(S_VAL(sv1), S_VAL(sv2)))
+
+struct symbol_value {
+	void *value;
+	tristate tri;
+};
+
+enum symbol_type {
+	S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
+};
+
+struct symbol {
+	struct symbol *next;
+	char *name;
+	char *help;
+#ifdef CML1
+	int type;
+#else
+	enum symbol_type type;
+#endif
+	struct symbol_value curr, def;
+	tristate visible;
+	int flags;
+	struct property *prop;
+	struct expr *dep, *dep2;
+	struct menu *menu;
+};
+
+#define for_all_symbols(i, sym) for (i = 0; i < 257; i++) for (sym = symbol_hash[i]; sym; sym = sym->next) if (sym->type != S_OTHER)
+
+#ifdef CML1
+#define SYMBOL_UNKNOWN		S_UNKNOWN
+#define SYMBOL_BOOLEAN		S_BOOLEAN
+#define SYMBOL_TRISTATE		S_TRISTATE
+#define SYMBOL_INT		S_INT
+#define SYMBOL_HEX		S_HEX
+#define SYMBOL_STRING		S_STRING
+#define SYMBOL_OTHER		S_OTHER
+#endif
+
+#define SYMBOL_YES		0x0001
+#define SYMBOL_MOD		0x0002
+#define SYMBOL_NO		0x0004
+#define SYMBOL_CONST		0x0007
+#define SYMBOL_CHECK		0x0008
+#define SYMBOL_CHOICE		0x0010
+#define SYMBOL_CHOICEVAL	0x0020
+#define SYMBOL_PRINTED		0x0040
+#define SYMBOL_VALID		0x0080
+#define SYMBOL_OPTIONAL		0x0100
+#define SYMBOL_WRITE		0x0200
+#define SYMBOL_CHANGED		0x0400
+#define SYMBOL_NEW		0x0800
+#define SYMBOL_AUTO		0x1000
+
+#define SYMBOL_MAXLENGTH	256
+#define SYMBOL_HASHSIZE		257
+#define SYMBOL_HASHMASK		0xff
+
+enum prop_type {
+	P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_ROOTMENU, P_DEFAULT, P_CHOICE
+};
+
+struct property {
+	struct property *next;
+	struct symbol *sym;
+#ifdef CML1
+	int token;
+#else
+	enum prop_type type;
+#endif
+	const char *text;
+	struct symbol *def;
+	struct expr_value visible;
+	struct expr *dep;
+	struct expr *dep2;
+	struct menu *menu;
+	struct file *file;
+	int lineno;
+#ifdef CML1
+	struct property *next_pos;
+#endif
+};
+
+#define for_all_properties(sym, st, tok) \
+	for (st = sym->prop; st; st = st->next) \
+		if (st->type == (tok))
+#define for_all_prompts(sym, st) for_all_properties(sym, st, P_PROMPT)
+#define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
+#define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
+
+struct menu {
+	struct menu *next;
+	struct menu *parent;
+	struct menu *list;
+	struct symbol *sym;
+	struct property *prompt;
+	struct expr *dep;
+	//char *help;
+	struct file *file;
+	int lineno;
+	//void *data;
+};
+
+#ifndef SWIG
+
+extern struct file *file_list;
+extern struct file *current_file;
+struct file *lookup_file(const char *name);
+
+extern struct symbol symbol_yes, symbol_no, symbol_mod;
+extern struct symbol *modules_sym;
+extern int cdebug;
+extern int print_type;
+struct expr *expr_alloc_symbol(struct symbol *sym);
+#ifdef CML1
+struct expr *expr_alloc_one(int token, struct expr *ce);
+struct expr *expr_alloc_two(int token, struct expr *e1, struct expr *e2);
+struct expr *expr_alloc_comp(int token, struct symbol *s1, struct symbol *s2);
+#else
+struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
+struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
+struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
+#endif
+struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
+struct expr *expr_copy(struct expr *org);
+void expr_free(struct expr *e);
+int expr_eq(struct expr *e1, struct expr *e2);
+void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
+tristate expr_calc_value(struct expr *e);
+struct expr *expr_eliminate_yn(struct expr *e);
+struct expr *expr_trans_bool(struct expr *e);
+struct expr *expr_eliminate_dups(struct expr *e);
+struct expr *expr_transform(struct expr *e);
+int expr_contains_symbol(struct expr *dep, struct symbol *sym);
+bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
+struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
+struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
+void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
+struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
+
+void expr_fprint(struct expr *e, FILE *out);
+void print_expr(int mask, struct expr *e, int prevtoken);
+
+#ifdef CML1
+static inline int expr_is_yes(struct expr *e)
+{
+	return !e || (e->token == WORD && e->left.sym == &symbol_yes);
+}
+
+static inline int expr_is_no(struct expr *e)
+{
+	return e && (e->token == WORD && e->left.sym == &symbol_no);
+}
+#else
+static inline int expr_is_yes(struct expr *e)
+{
+	return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
+}
+
+static inline int expr_is_no(struct expr *e)
+{
+	return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
+}
+#endif
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* EXPR_H */
diff --git a/scripts/kconfig/images.c b/scripts/kconfig/images.c
new file mode 100644
index 000000000000..65a5d67f8488
--- /dev/null
+++ b/scripts/kconfig/images.c
@@ -0,0 +1,292 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+static const char *xpm_load[] = {
+"22 22 5 1",
+". c None",
+"# c #000000",
+"c c #838100",
+"a c #ffff00",
+"b c #ffffff",
+"......................",
+"......................",
+"......................",
+"............####....#.",
+"...........#....##.##.",
+"..................###.",
+".................####.",
+".####...........#####.",
+"#abab##########.......",
+"#babababababab#.......",
+"#ababababababa#.......",
+"#babababababab#.......",
+"#ababab###############",
+"#babab##cccccccccccc##",
+"#abab##cccccccccccc##.",
+"#bab##cccccccccccc##..",
+"#ab##cccccccccccc##...",
+"#b##cccccccccccc##....",
+"###cccccccccccc##.....",
+"##cccccccccccc##......",
+"###############.......",
+"......................"};
+
+static const char *xpm_save[] = {
+"22 22 5 1",
+". c None",
+"# c #000000",
+"a c #838100",
+"b c #c5c2c5",
+"c c #cdb6d5",
+"......................",
+".####################.",
+".#aa#bbbbbbbbbbbb#bb#.",
+".#aa#bbbbbbbbbbbb#bb#.",
+".#aa#bbbbbbbbbcbb####.",
+".#aa#bbbccbbbbbbb#aa#.",
+".#aa#bbbccbbbbbbb#aa#.",
+".#aa#bbbbbbbbbbbb#aa#.",
+".#aa#bbbbbbbbbbbb#aa#.",
+".#aa#bbbbbbbbbbbb#aa#.",
+".#aa#bbbbbbbbbbbb#aa#.",
+".#aaa############aaa#.",
+".#aaaaaaaaaaaaaaaaaa#.",
+".#aaaaaaaaaaaaaaaaaa#.",
+".#aaa#############aa#.",
+".#aaa#########bbb#aa#.",
+".#aaa#########bbb#aa#.",
+".#aaa#########bbb#aa#.",
+".#aaa#########bbb#aa#.",
+".#aaa#########bbb#aa#.",
+"..##################..",
+"......................"};
+
+static const char *xpm_back[] = {
+"22 22 3 1",
+". c None",
+"# c #000083",
+"a c #838183",
+"......................",
+"......................",
+"......................",
+"......................",
+"......................",
+"...........######a....",
+"..#......##########...",
+"..##...####......##a..",
+"..###.###.........##..",
+"..######..........##..",
+"..#####...........##..",
+"..######..........##..",
+"..#######.........##..",
+"..########.......##a..",
+"...............a###...",
+"...............###....",
+"......................",
+"......................",
+"......................",
+"......................",
+"......................",
+"......................"};
+
+static const char *xpm_tree_view[] = {
+"22 22 2 1",
+". c None",
+"# c #000000",
+"......................",
+"......................",
+"......#...............",
+"......#...............",
+"......#...............",
+"......#...............",
+"......#...............",
+"......########........",
+"......#...............",
+"......#...............",
+"......#...............",
+"......#...............",
+"......#...............",
+"......########........",
+"......#...............",
+"......#...............",
+"......#...............",
+"......#...............",
+"......#...............",
+"......########........",
+"......................",
+"......................"};
+
+static const char *xpm_single_view[] = {
+"22 22 2 1",
+". c None",
+"# c #000000",
+"......................",
+"......................",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"..........#...........",
+"......................",
+"......................"};
+
+static const char *xpm_split_view[] = {
+"22 22 2 1",
+". c None",
+"# c #000000",
+"......................",
+"......................",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......#......#........",
+"......................",
+"......................"};
+
+static const char *xpm_symbol_no[] = {
+"12 12 2 1",
+"  c white",
+". c black",
+"            ",
+" .......... ",
+" .        . ",
+" .        . ",
+" .        . ",
+" .        . ",
+" .        . ",
+" .        . ",
+" .        . ",
+" .        . ",
+" .......... ",
+"            "};
+
+static const char *xpm_symbol_mod[] = {
+"12 12 2 1",
+"  c white",
+". c black",
+"            ",
+" .......... ",
+" .        . ",
+" .        . ",
+" .   ..   . ",
+" .  ....  . ",
+" .  ....  . ",
+" .   ..   . ",
+" .        . ",
+" .        . ",
+" .......... ",
+"            "};
+
+static const char *xpm_symbol_yes[] = {
+"12 12 2 1",
+"  c white",
+". c black",
+"            ",
+" .......... ",
+" .        . ",
+" .        . ",
+" .      . . ",
+" .     .. . ",
+" . .  ..  . ",
+" . ....   . ",
+" .  ..    . ",
+" .        . ",
+" .......... ",
+"            "};
+
+static const char *xpm_choice_no[] = {
+"12 12 2 1",
+"  c white",
+". c black",
+"            ",
+"    ....    ",
+"  ..    ..  ",
+"  .      .  ",
+" .        . ",
+" .        . ",
+" .        . ",
+" .        . ",
+"  .      .  ",
+"  ..    ..  ",
+"    ....    ",
+"            "};
+
+static const char *xpm_choice_yes[] = {
+"12 12 2 1",
+"  c white",
+". c black",
+"            ",
+"    ....    ",
+"  ..    ..  ",
+"  .      .  ",
+" .   ..   . ",
+" .  ....  . ",
+" .  ....  . ",
+" .   ..   . ",
+"  .      .  ",
+"  ..    ..  ",
+"    ....    ",
+"            "};
+
+static const char *xpm_menu[] = {
+"12 12 2 1",
+"  c white",
+". c black",
+"            ",
+" .......... ",
+" .        . ",
+" . ..     . ",
+" . ....   . ",
+" . ...... . ",
+" . ...... . ",
+" . ....   . ",
+" . ..     . ",
+" .        . ",
+" .......... ",
+"            "};
+
+static const char *xpm_menu_inv[] = {
+"12 12 2 1",
+"  c white",
+". c black",
+"            ",
+" .......... ",
+" .......... ",
+" ..  ...... ",
+" ..    .... ",
+" ..      .. ",
+" ..      .. ",
+" ..    .... ",
+" ..  ...... ",
+" .......... ",
+" .......... ",
+"            "};
diff --git a/scripts/kconfig/kconfig_load.c b/scripts/kconfig/kconfig_load.c
new file mode 100644
index 000000000000..dbdcaad82325
--- /dev/null
+++ b/scripts/kconfig/kconfig_load.c
@@ -0,0 +1,35 @@
+#include <dlfcn.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "lkc.h"
+
+#define P(name,type,arg)	type (*name ## _p) arg
+#include "lkc_proto.h"
+#undef P
+
+void kconfig_load(void)
+{
+	void *handle;
+	char *error;
+
+	handle = dlopen("./libkconfig.so", RTLD_LAZY);
+	if (!handle) {
+		handle = dlopen("./scripts/kconfig/libkconfig.so", RTLD_LAZY);
+		if (!handle) {
+			fprintf(stderr, "%s\n", dlerror());
+			exit(1);
+		}
+	}
+
+#define P(name,type,arg)			\
+{						\
+	name ## _p = dlsym(handle, #name);	\
+        if ((error = dlerror()))  {		\
+                fprintf(stderr, "%s\n", error);	\
+		exit(1);			\
+	}					\
+}
+#include "lkc_proto.h"
+#undef P
+}
diff --git a/scripts/kconfig/lex.zconf.c_shipped b/scripts/kconfig/lex.zconf.c_shipped
new file mode 100644
index 000000000000..fd4887f0bb8c
--- /dev/null
+++ b/scripts/kconfig/lex.zconf.c_shipped
@@ -0,0 +1,3270 @@
+#define yy_create_buffer zconf_create_buffer
+#define yy_delete_buffer zconf_delete_buffer
+#define yy_scan_buffer zconf_scan_buffer
+#define yy_scan_string zconf_scan_string
+#define yy_scan_bytes zconf_scan_bytes
+#define yy_flex_debug zconf_flex_debug
+#define yy_init_buffer zconf_init_buffer
+#define yy_flush_buffer zconf_flush_buffer
+#define yy_load_buffer_state zconf_load_buffer_state
+#define yy_switch_to_buffer zconf_switch_to_buffer
+#define yyin zconfin
+#define yyleng zconfleng
+#define yylex zconflex
+#define yyout zconfout
+#define yyrestart zconfrestart
+#define yytext zconftext
+
+/* A lexical scanner generated by flex */
+
+/* Scanner skeleton version:
+ * $Header: /home/daffy/u0/vern/flex/RCS/flex.skl,v 2.91 96/09/10 16:58:48 vern Exp $
+ */
+
+#define FLEX_SCANNER
+#define YY_FLEX_MAJOR_VERSION 2
+#define YY_FLEX_MINOR_VERSION 5
+
+#include <stdio.h>
+#include <errno.h>
+
+/* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
+#ifdef c_plusplus
+#ifndef __cplusplus
+#define __cplusplus
+#endif
+#endif
+
+
+#ifdef __cplusplus
+
+#include <stdlib.h>
+#ifndef _WIN32
+#include <unistd.h>
+#endif
+
+/* Use prototypes in function declarations. */
+#define YY_USE_PROTOS
+
+/* The "const" storage-class-modifier is valid. */
+#define YY_USE_CONST
+
+#else	/* ! __cplusplus */
+
+#if __STDC__
+
+#define YY_USE_PROTOS
+#define YY_USE_CONST
+
+#endif	/* __STDC__ */
+#endif	/* ! __cplusplus */
+
+#ifdef __TURBOC__
+ #pragma warn -rch
+ #pragma warn -use
+#include <io.h>
+#include <stdlib.h>
+#define YY_USE_CONST
+#define YY_USE_PROTOS
+#endif
+
+#ifdef YY_USE_CONST
+#define yyconst const
+#else
+#define yyconst
+#endif
+
+
+#ifdef YY_USE_PROTOS
+#define YY_PROTO(proto) proto
+#else
+#define YY_PROTO(proto) ()
+#endif
+
+/* Returned upon end-of-file. */
+#define YY_NULL 0
+
+/* Promotes a possibly negative, possibly signed char to an unsigned
+ * integer for use as an array index.  If the signed char is negative,
+ * we want to instead treat it as an 8-bit unsigned char, hence the
+ * double cast.
+ */
+#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+
+/* Enter a start condition.  This macro really ought to take a parameter,
+ * but we do it the disgusting crufty way forced on us by the ()-less
+ * definition of BEGIN.
+ */
+#define BEGIN yy_start = 1 + 2 *
+
+/* Translate the current start state into a value that can be later handed
+ * to BEGIN to return to the state.  The YYSTATE alias is for lex
+ * compatibility.
+ */
+#define YY_START ((yy_start - 1) / 2)
+#define YYSTATE YY_START
+
+/* Action number for EOF rule of a given start state. */
+#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
+
+/* Special action meaning "start processing a new file". */
+#define YY_NEW_FILE yyrestart( yyin )
+
+#define YY_END_OF_BUFFER_CHAR 0
+
+/* Size of default input buffer. */
+#define YY_BUF_SIZE 16384
+
+typedef struct yy_buffer_state *YY_BUFFER_STATE;
+
+extern int yyleng;
+extern FILE *yyin, *yyout;
+
+#define EOB_ACT_CONTINUE_SCAN 0
+#define EOB_ACT_END_OF_FILE 1
+#define EOB_ACT_LAST_MATCH 2
+
+/* The funky do-while in the following #define is used to turn the definition
+ * int a single C statement (which needs a semi-colon terminator).  This
+ * avoids problems with code like:
+ *
+ * 	if ( condition_holds )
+ *		yyless( 5 );
+ *	else
+ *		do_something_else();
+ *
+ * Prior to using the do-while the compiler would get upset at the
+ * "else" because it interpreted the "if" statement as being all
+ * done when it reached the ';' after the yyless() call.
+ */
+
+/* Return all but the first 'n' matched characters back to the input stream. */
+
+#define yyless(n) \
+	do \
+		{ \
+		/* Undo effects of setting up yytext. */ \
+		*yy_cp = yy_hold_char; \
+		YY_RESTORE_YY_MORE_OFFSET \
+		yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \
+		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
+		} \
+	while ( 0 )
+
+#define unput(c) yyunput( c, yytext_ptr )
+
+/* The following is because we cannot portably get our hands on size_t
+ * (without autoconf's help, which isn't available because we want
+ * flex-generated scanners to compile on their own).
+ */
+typedef unsigned int yy_size_t;
+
+
+struct yy_buffer_state
+	{
+	FILE *yy_input_file;
+
+	char *yy_ch_buf;		/* input buffer */
+	char *yy_buf_pos;		/* current position in input buffer */
+
+	/* Size of input buffer in bytes, not including room for EOB
+	 * characters.
+	 */
+	yy_size_t yy_buf_size;
+
+	/* Number of characters read into yy_ch_buf, not including EOB
+	 * characters.
+	 */
+	int yy_n_chars;
+
+	/* Whether we "own" the buffer - i.e., we know we created it,
+	 * and can realloc() it to grow it, and should free() it to
+	 * delete it.
+	 */
+	int yy_is_our_buffer;
+
+	/* Whether this is an "interactive" input source; if so, and
+	 * if we're using stdio for input, then we want to use getc()
+	 * instead of fread(), to make sure we stop fetching input after
+	 * each newline.
+	 */
+	int yy_is_interactive;
+
+	/* Whether we're considered to be at the beginning of a line.
+	 * If so, '^' rules will be active on the next match, otherwise
+	 * not.
+	 */
+	int yy_at_bol;
+
+	/* Whether to try to fill the input buffer when we reach the
+	 * end of it.
+	 */
+	int yy_fill_buffer;
+
+	int yy_buffer_status;
+#define YY_BUFFER_NEW 0
+#define YY_BUFFER_NORMAL 1
+	/* When an EOF's been seen but there's still some text to process
+	 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
+	 * shouldn't try reading from the input source any more.  We might
+	 * still have a bunch of tokens to match, though, because of
+	 * possible backing-up.
+	 *
+	 * When we actually see the EOF, we change the status to "new"
+	 * (via yyrestart()), so that the user can continue scanning by
+	 * just pointing yyin at a new input file.
+	 */
+#define YY_BUFFER_EOF_PENDING 2
+	};
+
+static YY_BUFFER_STATE yy_current_buffer = 0;
+
+/* We provide macros for accessing buffer states in case in the
+ * future we want to put the buffer states in a more general
+ * "scanner state".
+ */
+#define YY_CURRENT_BUFFER yy_current_buffer
+
+
+/* yy_hold_char holds the character lost when yytext is formed. */
+static char yy_hold_char;
+
+static int yy_n_chars;		/* number of characters read into yy_ch_buf */
+
+
+int yyleng;
+
+/* Points to current character in buffer. */
+static char *yy_c_buf_p = (char *) 0;
+static int yy_init = 1;		/* whether we need to initialize */
+static int yy_start = 0;	/* start state number */
+
+/* Flag which is used to allow yywrap()'s to do buffer switches
+ * instead of setting up a fresh yyin.  A bit of a hack ...
+ */
+static int yy_did_buffer_switch_on_eof;
+
+void yyrestart YY_PROTO(( FILE *input_file ));
+
+void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
+void yy_load_buffer_state YY_PROTO(( void ));
+YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size ));
+void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
+void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));
+void yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b ));
+#define YY_FLUSH_BUFFER yy_flush_buffer( yy_current_buffer )
+
+YY_BUFFER_STATE yy_scan_buffer YY_PROTO(( char *base, yy_size_t size ));
+YY_BUFFER_STATE yy_scan_string YY_PROTO(( yyconst char *yy_str ));
+YY_BUFFER_STATE yy_scan_bytes YY_PROTO(( yyconst char *bytes, int len ));
+
+static void *yy_flex_alloc YY_PROTO(( yy_size_t ));
+static void *yy_flex_realloc YY_PROTO(( void *, yy_size_t ));
+static void yy_flex_free YY_PROTO(( void * ));
+
+#define yy_new_buffer yy_create_buffer
+
+#define yy_set_interactive(is_interactive) \
+	{ \
+	if ( ! yy_current_buffer ) \
+		yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
+	yy_current_buffer->yy_is_interactive = is_interactive; \
+	}
+
+#define yy_set_bol(at_bol) \
+	{ \
+	if ( ! yy_current_buffer ) \
+		yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
+	yy_current_buffer->yy_at_bol = at_bol; \
+	}
+
+#define YY_AT_BOL() (yy_current_buffer->yy_at_bol)
+
+
+#define yywrap() 1
+#define YY_SKIP_YYWRAP
+typedef unsigned char YY_CHAR;
+FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
+typedef int yy_state_type;
+extern char *yytext;
+#define yytext_ptr yytext
+static yyconst short yy_nxt[][37] =
+    {
+    {
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    0,    0,    0,    0,    0
+    },
+
+    {
+       11,   12,   13,   14,   12,   12,   15,   12,   12,   12,
+       12,   12,   12,   12,   12,   12,   12,   12,   12,   12,
+       12,   12,   12,   12,   12,   12,   12,   12,   12,   12,
+       12,   12,   12,   12,   12,   12,   12
+    },
+
+    {
+       11,   12,   13,   14,   12,   12,   15,   12,   12,   12,
+       12,   12,   12,   12,   12,   12,   12,   12,   12,   12,
+
+       12,   12,   12,   12,   12,   12,   12,   12,   12,   12,
+       12,   12,   12,   12,   12,   12,   12
+    },
+
+    {
+       11,   16,   16,   17,   16,   16,   16,   16,   16,   16,
+       16,   16,   16,   18,   16,   16,   18,   19,   20,   21,
+       22,   18,   18,   23,   24,   18,   25,   18,   26,   27,
+       18,   28,   29,   30,   18,   18,   16
+    },
+
+    {
+       11,   16,   16,   17,   16,   16,   16,   16,   16,   16,
+       16,   16,   16,   18,   16,   16,   18,   19,   20,   21,
+       22,   18,   18,   23,   24,   18,   25,   18,   26,   27,
+       18,   28,   29,   30,   18,   18,   16
+
+    },
+
+    {
+       11,   31,   32,   33,   31,   31,   31,   31,   31,   31,
+       31,   31,   31,   31,   31,   31,   31,   31,   31,   31,
+       31,   31,   31,   31,   31,   31,   31,   31,   31,   31,
+       31,   31,   31,   31,   31,   31,   31
+    },
+
+    {
+       11,   31,   32,   33,   31,   31,   31,   31,   31,   31,
+       31,   31,   31,   31,   31,   31,   31,   31,   31,   31,
+       31,   31,   31,   31,   31,   31,   31,   31,   31,   31,
+       31,   31,   31,   31,   31,   31,   31
+    },
+
+    {
+       11,   34,   34,   35,   34,   36,   34,   34,   36,   34,
+       34,   34,   34,   34,   34,   37,   34,   34,   34,   34,
+
+       34,   34,   34,   34,   34,   34,   34,   34,   34,   34,
+       34,   34,   34,   34,   34,   34,   34
+    },
+
+    {
+       11,   34,   34,   35,   34,   36,   34,   34,   36,   34,
+       34,   34,   34,   34,   34,   37,   34,   34,   34,   34,
+       34,   34,   34,   34,   34,   34,   34,   34,   34,   34,
+       34,   34,   34,   34,   34,   34,   34
+    },
+
+    {
+       11,   38,   38,   39,   40,   41,   38,   42,   41,   43,
+       44,   45,   46,   46,   47,   38,   46,   46,   46,   46,
+       46,   46,   46,   46,   48,   46,   46,   46,   49,   46,
+       46,   46,   46,   46,   46,   46,   50
+
+    },
+
+    {
+       11,   38,   38,   39,   40,   41,   38,   42,   41,   43,
+       44,   45,   46,   46,   47,   38,   46,   46,   46,   46,
+       46,   46,   46,   46,   48,   46,   46,   46,   49,   46,
+       46,   46,   46,   46,   46,   46,   50
+    },
+
+    {
+      -11,  -11,  -11,  -11,  -11,  -11,  -11,  -11,  -11,  -11,
+      -11,  -11,  -11,  -11,  -11,  -11,  -11,  -11,  -11,  -11,
+      -11,  -11,  -11,  -11,  -11,  -11,  -11,  -11,  -11,  -11,
+      -11,  -11,  -11,  -11,  -11,  -11,  -11
+    },
+
+    {
+       11,  -12,  -12,  -12,  -12,  -12,  -12,  -12,  -12,  -12,
+      -12,  -12,  -12,  -12,  -12,  -12,  -12,  -12,  -12,  -12,
+
+      -12,  -12,  -12,  -12,  -12,  -12,  -12,  -12,  -12,  -12,
+      -12,  -12,  -12,  -12,  -12,  -12,  -12
+    },
+
+    {
+       11,  -13,   51,   52,  -13,  -13,   53,  -13,  -13,  -13,
+      -13,  -13,  -13,  -13,  -13,  -13,  -13,  -13,  -13,  -13,
+      -13,  -13,  -13,  -13,  -13,  -13,  -13,  -13,  -13,  -13,
+      -13,  -13,  -13,  -13,  -13,  -13,  -13
+    },
+
+    {
+       11,  -14,  -14,  -14,  -14,  -14,  -14,  -14,  -14,  -14,
+      -14,  -14,  -14,  -14,  -14,  -14,  -14,  -14,  -14,  -14,
+      -14,  -14,  -14,  -14,  -14,  -14,  -14,  -14,  -14,  -14,
+      -14,  -14,  -14,  -14,  -14,  -14,  -14
+
+    },
+
+    {
+       11,   54,   54,   55,   54,   54,   54,   54,   54,   54,
+       54,   54,   54,   54,   54,   54,   54,   54,   54,   54,
+       54,   54,   54,   54,   54,   54,   54,   54,   54,   54,
+       54,   54,   54,   54,   54,   54,   54
+    },
+
+    {
+       11,  -16,  -16,  -16,  -16,  -16,  -16,  -16,  -16,  -16,
+      -16,  -16,  -16,  -16,  -16,  -16,  -16,  -16,  -16,  -16,
+      -16,  -16,  -16,  -16,  -16,  -16,  -16,  -16,  -16,  -16,
+      -16,  -16,  -16,  -16,  -16,  -16,  -16
+    },
+
+    {
+       11,  -17,  -17,  -17,  -17,  -17,  -17,  -17,  -17,  -17,
+      -17,  -17,  -17,  -17,  -17,  -17,  -17,  -17,  -17,  -17,
+
+      -17,  -17,  -17,  -17,  -17,  -17,  -17,  -17,  -17,  -17,
+      -17,  -17,  -17,  -17,  -17,  -17,  -17
+    },
+
+    {
+       11,  -18,  -18,  -18,  -18,  -18,  -18,  -18,  -18,  -18,
+      -18,  -18,  -18,   56,  -18,  -18,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,  -18
+    },
+
+    {
+       11,  -19,  -19,  -19,  -19,  -19,  -19,  -19,  -19,  -19,
+      -19,  -19,  -19,   56,  -19,  -19,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   57,   56,
+       56,   56,   56,   56,   56,   56,  -19
+
+    },
+
+    {
+       11,  -20,  -20,  -20,  -20,  -20,  -20,  -20,  -20,  -20,
+      -20,  -20,  -20,   56,  -20,  -20,   56,   56,   56,   56,
+       56,   56,   56,   58,   56,   56,   56,   56,   59,   56,
+       56,   56,   56,   56,   56,   56,  -20
+    },
+
+    {
+       11,  -21,  -21,  -21,  -21,  -21,  -21,  -21,  -21,  -21,
+      -21,  -21,  -21,   56,  -21,  -21,   56,   56,   56,   56,
+       60,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,  -21
+    },
+
+    {
+       11,  -22,  -22,  -22,  -22,  -22,  -22,  -22,  -22,  -22,
+      -22,  -22,  -22,   56,  -22,  -22,   56,   56,   56,   56,
+
+       56,   56,   56,   56,   56,   56,   56,   61,   56,   56,
+       56,   56,   56,   56,   56,   56,  -22
+    },
+
+    {
+       11,  -23,  -23,  -23,  -23,  -23,  -23,  -23,  -23,  -23,
+      -23,  -23,  -23,   56,  -23,  -23,   56,   56,   56,   56,
+       62,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,  -23
+    },
+
+    {
+       11,  -24,  -24,  -24,  -24,  -24,  -24,  -24,  -24,  -24,
+      -24,  -24,  -24,   56,  -24,  -24,   56,   56,   56,   56,
+       56,   63,   56,   56,   56,   56,   56,   64,   56,   56,
+       56,   56,   56,   56,   56,   56,  -24
+
+    },
+
+    {
+       11,  -25,  -25,  -25,  -25,  -25,  -25,  -25,  -25,  -25,
+      -25,  -25,  -25,   56,  -25,  -25,   65,   56,   56,   56,
+       66,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,  -25
+    },
+
+    {
+       11,  -26,  -26,  -26,  -26,  -26,  -26,  -26,  -26,  -26,
+      -26,  -26,  -26,   56,  -26,  -26,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   67,
+       56,   56,   56,   56,   56,   56,  -26
+    },
+
+    {
+       11,  -27,  -27,  -27,  -27,  -27,  -27,  -27,  -27,  -27,
+      -27,  -27,  -27,   56,  -27,  -27,   56,   56,   56,   56,
+
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   68,   56,   56,   56,   56,  -27
+    },
+
+    {
+       11,  -28,  -28,  -28,  -28,  -28,  -28,  -28,  -28,  -28,
+      -28,  -28,  -28,   56,  -28,  -28,   56,   56,   56,   56,
+       69,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,  -28
+    },
+
+    {
+       11,  -29,  -29,  -29,  -29,  -29,  -29,  -29,  -29,  -29,
+      -29,  -29,  -29,   56,  -29,  -29,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   70,   56,
+       56,   56,   56,   71,   56,   56,  -29
+
+    },
+
+    {
+       11,  -30,  -30,  -30,  -30,  -30,  -30,  -30,  -30,  -30,
+      -30,  -30,  -30,   56,  -30,  -30,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   72,   56,   56,   56,   56,  -30
+    },
+
+    {
+       11,   73,   73,  -31,   73,   73,   73,   73,   73,   73,
+       73,   73,   73,   73,   73,   73,   73,   73,   73,   73,
+       73,   73,   73,   73,   73,   73,   73,   73,   73,   73,
+       73,   73,   73,   73,   73,   73,   73
+    },
+
+    {
+       11,  -32,   74,   75,  -32,  -32,  -32,  -32,  -32,  -32,
+      -32,  -32,  -32,  -32,  -32,  -32,  -32,  -32,  -32,  -32,
+
+      -32,  -32,  -32,  -32,  -32,  -32,  -32,  -32,  -32,  -32,
+      -32,  -32,  -32,  -32,  -32,  -32,  -32
+    },
+
+    {
+       11,   76,  -33,  -33,   76,   76,   76,   76,   76,   76,
+       76,   76,   76,   76,   76,   76,   76,   76,   76,   76,
+       76,   76,   76,   76,   76,   76,   76,   76,   76,   76,
+       76,   76,   76,   76,   76,   76,   76
+    },
+
+    {
+       11,   77,   77,  -34,   77,  -34,   77,   77,  -34,   77,
+       77,   77,   77,   77,   77,  -34,   77,   77,   77,   77,
+       77,   77,   77,   77,   77,   77,   77,   77,   77,   77,
+       77,   77,   77,   77,   77,   77,   77
+
+    },
+
+    {
+       11,  -35,  -35,  -35,  -35,  -35,  -35,  -35,  -35,  -35,
+      -35,  -35,  -35,  -35,  -35,  -35,  -35,  -35,  -35,  -35,
+      -35,  -35,  -35,  -35,  -35,  -35,  -35,  -35,  -35,  -35,
+      -35,  -35,  -35,  -35,  -35,  -35,  -35
+    },
+
+    {
+       11,  -36,  -36,  -36,  -36,  -36,  -36,  -36,  -36,  -36,
+      -36,  -36,  -36,  -36,  -36,  -36,  -36,  -36,  -36,  -36,
+      -36,  -36,  -36,  -36,  -36,  -36,  -36,  -36,  -36,  -36,
+      -36,  -36,  -36,  -36,  -36,  -36,  -36
+    },
+
+    {
+       11,   78,   79,   80,   78,   78,   78,   78,   78,   78,
+       78,   78,   78,   78,   78,   78,   78,   78,   78,   78,
+
+       78,   78,   78,   78,   78,   78,   78,   78,   78,   78,
+       78,   78,   78,   78,   78,   78,   78
+    },
+
+    {
+       11,  -38,  -38,  -38,  -38,  -38,  -38,  -38,  -38,  -38,
+      -38,  -38,  -38,  -38,  -38,  -38,  -38,  -38,  -38,  -38,
+      -38,  -38,  -38,  -38,  -38,  -38,  -38,  -38,  -38,  -38,
+      -38,  -38,  -38,  -38,  -38,  -38,  -38
+    },
+
+    {
+       11,  -39,  -39,  -39,  -39,  -39,  -39,  -39,  -39,  -39,
+      -39,  -39,  -39,  -39,  -39,  -39,  -39,  -39,  -39,  -39,
+      -39,  -39,  -39,  -39,  -39,  -39,  -39,  -39,  -39,  -39,
+      -39,  -39,  -39,  -39,  -39,  -39,  -39
+
+    },
+
+    {
+       11,  -40,  -40,  -40,  -40,  -40,  -40,  -40,  -40,  -40,
+      -40,  -40,  -40,  -40,   81,  -40,  -40,  -40,  -40,  -40,
+      -40,  -40,  -40,  -40,  -40,  -40,  -40,  -40,  -40,  -40,
+      -40,  -40,  -40,  -40,  -40,  -40,  -40
+    },
+
+    {
+       11,  -41,  -41,  -41,  -41,  -41,  -41,  -41,  -41,  -41,
+      -41,  -41,  -41,  -41,  -41,  -41,  -41,  -41,  -41,  -41,
+      -41,  -41,  -41,  -41,  -41,  -41,  -41,  -41,  -41,  -41,
+      -41,  -41,  -41,  -41,  -41,  -41,  -41
+    },
+
+    {
+       11,  -42,  -42,  -42,  -42,  -42,  -42,   82,  -42,  -42,
+      -42,  -42,  -42,  -42,  -42,  -42,  -42,  -42,  -42,  -42,
+
+      -42,  -42,  -42,  -42,  -42,  -42,  -42,  -42,  -42,  -42,
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+    {
+       11, -153, -153, -153, -153, -153, -153, -153, -153, -153,
+     -153, -153, -153,   56, -153, -153,   56,   56,   56,   56,
+      165,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -153
+    },
+
+    {
+       11, -154, -154, -154, -154, -154, -154, -154, -154, -154,
+     -154, -154, -154,   56, -154, -154,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -154
+
+    },
+
+    {
+       11, -155, -155, -155, -155, -155, -155, -155, -155, -155,
+     -155, -155, -155,   56, -155, -155,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -155
+    },
+
+    {
+       11, -156, -156, -156, -156, -156, -156, -156, -156, -156,
+     -156, -156, -156,   56, -156, -156,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,  166,   56,   56, -156
+    },
+
+    {
+       11, -157, -157, -157, -157, -157, -157, -157, -157, -157,
+     -157, -157, -157,   56, -157, -157,   56,   56,   56,   56,
+
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -157
+    },
+
+    {
+       11, -158, -158, -158, -158, -158, -158, -158, -158, -158,
+     -158, -158, -158,   56, -158, -158,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -158
+    },
+
+    {
+       11, -159, -159, -159, -159, -159, -159, -159, -159, -159,
+     -159, -159, -159,   56, -159, -159,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -159
+
+    },
+
+    {
+       11, -160, -160, -160, -160, -160, -160, -160, -160, -160,
+     -160, -160, -160,   56, -160, -160,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -160
+    },
+
+    {
+       11, -161, -161, -161, -161, -161, -161, -161, -161, -161,
+     -161, -161, -161,   56, -161, -161,   56,   56,  167,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -161
+    },
+
+    {
+       11, -162, -162, -162, -162, -162, -162, -162, -162, -162,
+     -162, -162, -162,   56, -162, -162,   56,   56,   56,   56,
+
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -162
+    },
+
+    {
+       11, -163, -163, -163, -163, -163, -163, -163, -163, -163,
+     -163, -163, -163,   56, -163, -163,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,  168,   56, -163
+    },
+
+    {
+       11, -164, -164, -164, -164, -164, -164, -164, -164, -164,
+     -164, -164, -164,   56, -164, -164,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,  169,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -164
+
+    },
+
+    {
+       11, -165, -165, -165, -165, -165, -165, -165, -165, -165,
+     -165, -165, -165,   56, -165, -165,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,  170,   56,   56,   56, -165
+    },
+
+    {
+       11, -166, -166, -166, -166, -166, -166, -166, -166, -166,
+     -166, -166, -166,   56, -166, -166,   56,   56,   56,   56,
+      171,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -166
+    },
+
+    {
+       11, -167, -167, -167, -167, -167, -167, -167, -167, -167,
+     -167, -167, -167,   56, -167, -167,   56,   56,   56,   56,
+
+      172,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -167
+    },
+
+    {
+       11, -168, -168, -168, -168, -168, -168, -168, -168, -168,
+     -168, -168, -168,   56, -168, -168,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -168
+    },
+
+    {
+       11, -169, -169, -169, -169, -169, -169, -169, -169, -169,
+     -169, -169, -169,   56, -169, -169,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -169
+
+    },
+
+    {
+       11, -170, -170, -170, -170, -170, -170, -170, -170, -170,
+     -170, -170, -170,   56, -170, -170,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -170
+    },
+
+    {
+       11, -171, -171, -171, -171, -171, -171, -171, -171, -171,
+     -171, -171, -171,   56, -171, -171,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -171
+    },
+
+    {
+       11, -172, -172, -172, -172, -172, -172, -172, -172, -172,
+     -172, -172, -172,   56, -172, -172,   56,   56,   56,   56,
+
+       56,   56,   56,   56,   56,   56,   56,   56,   56,   56,
+       56,   56,   56,   56,   56,   56, -172
+    },
+
+    } ;
+
+
+static yy_state_type yy_get_previous_state YY_PROTO(( void ));
+static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state ));
+static int yy_get_next_buffer YY_PROTO(( void ));
+static void yy_fatal_error YY_PROTO(( yyconst char msg[] ));
+
+/* Done after the current pattern has been matched and before the
+ * corresponding action - sets up yytext.
+ */
+#define YY_DO_BEFORE_ACTION \
+	yytext_ptr = yy_bp; \
+	yyleng = (int) (yy_cp - yy_bp); \
+	yy_hold_char = *yy_cp; \
+	*yy_cp = '\0'; \
+	yy_c_buf_p = yy_cp;
+
+#define YY_NUM_RULES 55
+#define YY_END_OF_BUFFER 56
+static yyconst short int yy_accept[173] =
+    {   0,
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+       56,    5,    4,    3,    2,   29,   30,   28,   28,   28,
+       28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
+       54,   51,   53,   45,   50,   46,   48,   44,   41,   35,
+       40,   44,   33,   34,   43,   43,   36,   43,   43,   44,
+        4,    3,    2,    2,    1,   28,   28,   28,   28,   28,
+       28,   28,   15,   28,   28,   28,   28,   28,   28,   28,
+       28,   28,   54,   51,   53,   52,   45,   49,   48,   47,
+       37,   31,   43,   43,   38,   39,   32,   28,   28,   28,
+       28,   28,   28,   28,   28,   26,   25,   28,   28,   28,
+
+       28,   28,   28,   28,   28,   48,   42,   23,   28,   28,
+       28,   28,   28,   28,   28,   28,   14,   28,    7,   28,
+       28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
+       28,   28,   16,   28,   28,   28,   28,   28,   28,   28,
+       28,   28,   10,   28,   13,   28,   28,   28,   28,   28,
+       28,   21,   28,    9,   27,   28,   24,   12,   20,   17,
+       28,    8,   28,   28,   28,   28,   28,    6,   19,   18,
+       22,   11
+    } ;
+
+static yyconst int yy_ec[256] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    2,    4,    5,    6,    1,    1,    7,    8,    9,
+       10,    1,    1,    1,   11,   12,   12,   13,   13,   13,
+       13,   13,   13,   13,   13,   13,   13,    1,    1,    1,
+       14,    1,    1,    1,   13,   13,   13,   13,   13,   13,
+       13,   13,   13,   13,   13,   13,   13,   13,   13,   13,
+       13,   13,   13,   13,   13,   13,   13,   13,   13,   13,
+        1,   15,    1,    1,   13,    1,   16,   17,   18,   19,
+
+       20,   21,   22,   23,   24,   13,   13,   25,   26,   27,
+       28,   29,   30,   31,   32,   33,   34,   13,   13,   35,
+       13,   13,    1,   36,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1
+    } ;
+
+/* The intent behind this definition is that it'll catch
+ * any uses of REJECT which flex missed.
+ */
+#define REJECT reject_used_but_not_detected
+#define yymore() yymore_used_but_not_detected
+#define YY_MORE_ADJ 0
+#define YY_RESTORE_YY_MORE_OFFSET
+char *yytext;
+#line 1 "zconf.l"
+#define INITIAL 0
+#define COMMAND 1
+#define HELP 2
+#define STRING 3
+#define PARAM 4
+
+#line 5 "zconf.l"
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+#include "zconf.tab.h"
+
+#define START_STRSIZE	16
+
+char *text;
+static char *text_ptr;
+static int text_size, text_asize;
+
+struct buffer {
+        struct buffer *parent;
+        YY_BUFFER_STATE state;
+};
+
+struct buffer *current_buf;
+
+static int last_ts, first_ts;
+
+static void zconf_endhelp(void);
+static struct buffer *zconf_endfile(void);
+
+void new_string(void)
+{
+	text = malloc(START_STRSIZE);
+	text_asize = START_STRSIZE;
+	text_ptr = text;
+	text_size = 0;
+	*text_ptr = 0;
+}
+
+void append_string(const char *str, int size)
+{
+	int new_size = text_size + size + 1;
+	if (new_size > text_asize) {
+		text = realloc(text, new_size);
+		text_asize = new_size;
+		text_ptr = text + text_size;
+	}
+	memcpy(text_ptr, str, size);
+	text_ptr += size;
+	text_size += size;
+	*text_ptr = 0;
+}
+
+void alloc_string(const char *str, int size)
+{
+	text = malloc(size + 1);
+	memcpy(text, str, size);
+	text[size] = 0;
+}
+#line 1726 "lex.zconf.c"
+
+/* Macros after this point can all be overridden by user definitions in
+ * section 1.
+ */
+
+#ifndef YY_SKIP_YYWRAP
+#ifdef __cplusplus
+extern "C" int yywrap YY_PROTO(( void ));
+#else
+extern int yywrap YY_PROTO(( void ));
+#endif
+#endif
+
+#ifndef YY_NO_UNPUT
+static void yyunput YY_PROTO(( int c, char *buf_ptr ));
+#endif
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy YY_PROTO(( char *, yyconst char *, int ));
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen YY_PROTO(( yyconst char * ));
+#endif
+
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+static int yyinput YY_PROTO(( void ));
+#else
+static int input YY_PROTO(( void ));
+#endif
+#endif
+
+#if YY_STACK_USED
+static int yy_start_stack_ptr = 0;
+static int yy_start_stack_depth = 0;
+static int *yy_start_stack = 0;
+#ifndef YY_NO_PUSH_STATE
+static void yy_push_state YY_PROTO(( int new_state ));
+#endif
+#ifndef YY_NO_POP_STATE
+static void yy_pop_state YY_PROTO(( void ));
+#endif
+#ifndef YY_NO_TOP_STATE
+static int yy_top_state YY_PROTO(( void ));
+#endif
+
+#else
+#define YY_NO_PUSH_STATE 1
+#define YY_NO_POP_STATE 1
+#define YY_NO_TOP_STATE 1
+#endif
+
+#ifdef YY_MALLOC_DECL
+YY_MALLOC_DECL
+#else
+#if __STDC__
+#ifndef __cplusplus
+#include <stdlib.h>
+#endif
+#else
+/* Just try to get by without declaring the routines.  This will fail
+ * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int)
+ * or sizeof(void*) != sizeof(int).
+ */
+#endif
+#endif
+
+/* Amount of stuff to slurp up with each read. */
+#ifndef YY_READ_BUF_SIZE
+#define YY_READ_BUF_SIZE 8192
+#endif
+
+/* Copy whatever the last rule matched to the standard output. */
+
+#ifndef ECHO
+/* This used to be an fputs(), but since the string might contain NUL's,
+ * we now use fwrite().
+ */
+#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
+#endif
+
+/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
+ * is returned in "result".
+ */
+#ifndef YY_INPUT
+#define YY_INPUT(buf,result,max_size) \
+	errno=0; \
+	while ( (result = read( fileno(yyin), (char *) buf, max_size )) < 0 ) \
+	{ \
+		if( errno != EINTR) \
+		{ \
+			YY_FATAL_ERROR( "input in flex scanner failed" ); \
+			break; \
+		} \
+		errno=0; \
+		clearerr(yyin); \
+	}
+#endif
+
+/* No semi-colon after return; correct usage is to write "yyterminate();" -
+ * we don't want an extra ';' after the "return" because that will cause
+ * some compilers to complain about unreachable statements.
+ */
+#ifndef yyterminate
+#define yyterminate() return YY_NULL
+#endif
+
+/* Number of entries by which start-condition stack grows. */
+#ifndef YY_START_STACK_INCR
+#define YY_START_STACK_INCR 25
+#endif
+
+/* Report a fatal error. */
+#ifndef YY_FATAL_ERROR
+#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
+#endif
+
+/* Default declaration of generated scanner - a define so the user can
+ * easily add parameters.
+ */
+#ifndef YY_DECL
+#define YY_DECL int yylex YY_PROTO(( void ))
+#endif
+
+/* Code executed at the beginning of each rule, after yytext and yyleng
+ * have been set up.
+ */
+#ifndef YY_USER_ACTION
+#define YY_USER_ACTION
+#endif
+
+/* Code executed at the end of each rule. */
+#ifndef YY_BREAK
+#define YY_BREAK break;
+#endif
+
+#define YY_RULE_SETUP \
+	YY_USER_ACTION
+
+YY_DECL
+	{
+	register yy_state_type yy_current_state;
+	register char *yy_cp, *yy_bp;
+	register int yy_act;
+
+#line 71 "zconf.l"
+
+	int str = 0;
+	int ts, i;
+
+#line 1878 "lex.zconf.c"
+
+	if ( yy_init )
+		{
+		yy_init = 0;
+
+#ifdef YY_USER_INIT
+		YY_USER_INIT;
+#endif
+
+		if ( ! yy_start )
+			yy_start = 1;	/* first start state */
+
+		if ( ! yyin )
+			yyin = stdin;
+
+		if ( ! yyout )
+			yyout = stdout;
+
+		if ( ! yy_current_buffer )
+			yy_current_buffer =
+				yy_create_buffer( yyin, YY_BUF_SIZE );
+
+		yy_load_buffer_state();
+		}
+
+	while ( 1 )		/* loops until end-of-file is reached */
+		{
+		yy_cp = yy_c_buf_p;
+
+		/* Support of yytext. */
+		*yy_cp = yy_hold_char;
+
+		/* yy_bp points to the position in yy_ch_buf of the start of
+		 * the current run.
+		 */
+		yy_bp = yy_cp;
+
+		yy_current_state = yy_start;
+yy_match:
+		while ( (yy_current_state = yy_nxt[yy_current_state][yy_ec[YY_SC_TO_UI(*yy_cp)]]) > 0 )
+			++yy_cp;
+
+		yy_current_state = -yy_current_state;
+
+yy_find_action:
+		yy_act = yy_accept[yy_current_state];
+
+		YY_DO_BEFORE_ACTION;
+
+
+do_action:	/* This label is used only to access EOF actions. */
+
+
+		switch ( yy_act )
+	{ /* beginning of action switch */
+case 1:
+YY_RULE_SETUP
+#line 75 "zconf.l"
+current_file->lineno++;
+	YY_BREAK
+case 2:
+YY_RULE_SETUP
+#line 76 "zconf.l"
+
+	YY_BREAK
+case 3:
+YY_RULE_SETUP
+#line 78 "zconf.l"
+current_file->lineno++; return T_EOL;
+	YY_BREAK
+case 4:
+YY_RULE_SETUP
+#line 80 "zconf.l"
+{
+	BEGIN(COMMAND);
+}
+	YY_BREAK
+case 5:
+YY_RULE_SETUP
+#line 84 "zconf.l"
+{
+	unput(yytext[0]);
+	//printf("new config: ");
+	//symbol_end(NULL);
+	BEGIN(COMMAND);
+}
+	YY_BREAK
+
+case 6:
+YY_RULE_SETUP
+#line 93 "zconf.l"
+BEGIN(PARAM); return T_MAINMENU;
+	YY_BREAK
+case 7:
+YY_RULE_SETUP
+#line 94 "zconf.l"
+BEGIN(PARAM); return T_MENU;
+	YY_BREAK
+case 8:
+YY_RULE_SETUP
+#line 95 "zconf.l"
+BEGIN(PARAM); return T_ENDMENU;
+	YY_BREAK
+case 9:
+YY_RULE_SETUP
+#line 96 "zconf.l"
+BEGIN(PARAM); return T_SOURCE;
+	YY_BREAK
+case 10:
+YY_RULE_SETUP
+#line 97 "zconf.l"
+BEGIN(PARAM); return T_CHOICE;
+	YY_BREAK
+case 11:
+YY_RULE_SETUP
+#line 98 "zconf.l"
+BEGIN(PARAM); return T_ENDCHOICE;
+	YY_BREAK
+case 12:
+YY_RULE_SETUP
+#line 99 "zconf.l"
+BEGIN(PARAM); return T_COMMENT;
+	YY_BREAK
+case 13:
+YY_RULE_SETUP
+#line 100 "zconf.l"
+BEGIN(PARAM); return T_CONFIG;
+	YY_BREAK
+case 14:
+YY_RULE_SETUP
+#line 101 "zconf.l"
+BEGIN(PARAM); return T_HELP;
+	YY_BREAK
+case 15:
+YY_RULE_SETUP
+#line 102 "zconf.l"
+BEGIN(PARAM); return T_IF;
+	YY_BREAK
+case 16:
+YY_RULE_SETUP
+#line 103 "zconf.l"
+BEGIN(PARAM); return T_ENDIF;
+	YY_BREAK
+case 17:
+YY_RULE_SETUP
+#line 104 "zconf.l"
+BEGIN(PARAM); return T_DEPENDS;
+	YY_BREAK
+case 18:
+YY_RULE_SETUP
+#line 105 "zconf.l"
+BEGIN(PARAM); return T_REQUIRES;
+	YY_BREAK
+case 19:
+YY_RULE_SETUP
+#line 106 "zconf.l"
+BEGIN(PARAM); return T_OPTIONAL;
+	YY_BREAK
+case 20:
+YY_RULE_SETUP
+#line 107 "zconf.l"
+BEGIN(PARAM); return T_DEFAULT;
+	YY_BREAK
+case 21:
+YY_RULE_SETUP
+#line 108 "zconf.l"
+BEGIN(PARAM); return T_PROMPT;
+	YY_BREAK
+case 22:
+YY_RULE_SETUP
+#line 109 "zconf.l"
+BEGIN(PARAM); return T_TRISTATE;
+	YY_BREAK
+case 23:
+YY_RULE_SETUP
+#line 110 "zconf.l"
+BEGIN(PARAM); return T_BOOLEAN;
+	YY_BREAK
+case 24:
+YY_RULE_SETUP
+#line 111 "zconf.l"
+BEGIN(PARAM); return T_BOOLEAN;
+	YY_BREAK
+case 25:
+YY_RULE_SETUP
+#line 112 "zconf.l"
+BEGIN(PARAM); return T_INT;
+	YY_BREAK
+case 26:
+YY_RULE_SETUP
+#line 113 "zconf.l"
+BEGIN(PARAM); return T_HEX;
+	YY_BREAK
+case 27:
+YY_RULE_SETUP
+#line 114 "zconf.l"
+BEGIN(PARAM); return T_STRING;
+	YY_BREAK
+case 28:
+YY_RULE_SETUP
+#line 115 "zconf.l"
+{
+		alloc_string(yytext, yyleng);
+		zconflval.string = text;
+		return T_WORD;
+	}
+	YY_BREAK
+case 29:
+YY_RULE_SETUP
+#line 120 "zconf.l"
+
+	YY_BREAK
+case 30:
+YY_RULE_SETUP
+#line 121 "zconf.l"
+current_file->lineno++; BEGIN(INITIAL);
+	YY_BREAK
+
+
+case 31:
+YY_RULE_SETUP
+#line 125 "zconf.l"
+return T_AND;
+	YY_BREAK
+case 32:
+YY_RULE_SETUP
+#line 126 "zconf.l"
+return T_OR;
+	YY_BREAK
+case 33:
+YY_RULE_SETUP
+#line 127 "zconf.l"
+return T_OPEN_PAREN;
+	YY_BREAK
+case 34:
+YY_RULE_SETUP
+#line 128 "zconf.l"
+return T_CLOSE_PAREN;
+	YY_BREAK
+case 35:
+YY_RULE_SETUP
+#line 129 "zconf.l"
+return T_NOT;
+	YY_BREAK
+case 36:
+YY_RULE_SETUP
+#line 130 "zconf.l"
+return T_EQUAL;
+	YY_BREAK
+case 37:
+YY_RULE_SETUP
+#line 131 "zconf.l"
+return T_UNEQUAL;
+	YY_BREAK
+case 38:
+YY_RULE_SETUP
+#line 132 "zconf.l"
+return T_IF;
+	YY_BREAK
+case 39:
+YY_RULE_SETUP
+#line 133 "zconf.l"
+return T_ON;
+	YY_BREAK
+case 40:
+YY_RULE_SETUP
+#line 134 "zconf.l"
+{
+		str = yytext[0];
+		new_string();
+		BEGIN(STRING);
+	}
+	YY_BREAK
+case 41:
+YY_RULE_SETUP
+#line 139 "zconf.l"
+BEGIN(INITIAL); current_file->lineno++; return T_EOL;
+	YY_BREAK
+case 42:
+YY_RULE_SETUP
+#line 140 "zconf.l"
+/* ignore */
+	YY_BREAK
+case 43:
+YY_RULE_SETUP
+#line 141 "zconf.l"
+{
+		alloc_string(yytext, yyleng);
+		zconflval.string = text;
+		return T_WORD;
+	}
+	YY_BREAK
+case 44:
+YY_RULE_SETUP
+#line 146 "zconf.l"
+
+	YY_BREAK
+
+
+case 45:
+YY_RULE_SETUP
+#line 150 "zconf.l"
+{
+		append_string(yytext, yyleng);
+	}
+	YY_BREAK
+case 46:
+YY_RULE_SETUP
+#line 153 "zconf.l"
+{
+		if (str == yytext[0]) {
+			BEGIN(PARAM);
+			zconflval.string = text;
+			//printf("s:%s\n", text);
+			return T_STRING;
+		} else
+			append_string(yytext, 1);
+	}
+	YY_BREAK
+case 47:
+YY_RULE_SETUP
+#line 162 "zconf.l"
+append_string(yytext+yyleng-1, 1); current_file->lineno++;
+	YY_BREAK
+case 48:
+YY_RULE_SETUP
+#line 163 "zconf.l"
+append_string(yytext+1, yyleng-1);
+	YY_BREAK
+case 49:
+YY_RULE_SETUP
+#line 164 "zconf.l"
+append_string(yytext+1, 1);
+	YY_BREAK
+case 50:
+YY_RULE_SETUP
+#line 165 "zconf.l"
+{
+		//printf(":%d: open string!\n", current_file->lineno+1);
+		exit(0);
+	}
+	YY_BREAK
+case YY_STATE_EOF(STRING):
+#line 169 "zconf.l"
+{
+		//printf(":%d: open string!\n", current_file->lineno+1);
+		exit(0);
+	}
+	YY_BREAK
+
+
+case 51:
+YY_RULE_SETUP
+#line 176 "zconf.l"
+{
+		ts = 0;
+		for (i = 0; i < yyleng; i++) {
+			if (yytext[i] == '\t')
+				ts = (ts & ~7) + 8;
+			else
+				ts++;
+		}
+		last_ts = ts;
+		if (first_ts) {
+			if (ts < first_ts) {
+				zconf_endhelp();
+				return T_HELPTEXT;
+			}
+			ts -= first_ts;
+			while (ts > 8) {
+				append_string("        ", 8);
+				ts -= 8;
+			}
+			append_string("        ", ts);
+		}
+		
+	}
+	YY_BREAK
+case 52:
+*yy_cp = yy_hold_char; /* undo effects of setting up yytext */
+yy_c_buf_p = yy_cp = yy_bp + 1;
+YY_DO_BEFORE_ACTION; /* set up yytext again */
+YY_RULE_SETUP
+#line 199 "zconf.l"
+{
+		current_file->lineno++;
+		zconf_endhelp();
+		return T_HELPTEXT;
+	}
+	YY_BREAK
+case 53:
+YY_RULE_SETUP
+#line 204 "zconf.l"
+{
+		current_file->lineno++;
+		append_string("\n", 1);
+	}
+	YY_BREAK
+case 54:
+YY_RULE_SETUP
+#line 208 "zconf.l"
+{
+		append_string(yytext, yyleng);
+		if (!first_ts)
+			first_ts = last_ts;
+	}
+	YY_BREAK
+case YY_STATE_EOF(HELP):
+#line 213 "zconf.l"
+{
+		zconf_endhelp();
+		return T_HELPTEXT;
+	}
+	YY_BREAK
+
+case YY_STATE_EOF(INITIAL):
+case YY_STATE_EOF(COMMAND):
+case YY_STATE_EOF(PARAM):
+#line 219 "zconf.l"
+{
+	if (current_buf) {
+		zconf_endfile();
+		return T_EOF;
+	}
+	yyterminate();
+}
+	YY_BREAK
+case 55:
+YY_RULE_SETUP
+#line 227 "zconf.l"
+YY_FATAL_ERROR( "flex scanner jammed" );
+	YY_BREAK
+#line 2311 "lex.zconf.c"
+
+	case YY_END_OF_BUFFER:
+		{
+		/* Amount of text matched not including the EOB char. */
+		int yy_amount_of_matched_text = (int) (yy_cp - yytext_ptr) - 1;
+
+		/* Undo the effects of YY_DO_BEFORE_ACTION. */
+		*yy_cp = yy_hold_char;
+		YY_RESTORE_YY_MORE_OFFSET
+
+		if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_NEW )
+			{
+			/* We're scanning a new file or input source.  It's
+			 * possible that this happened because the user
+			 * just pointed yyin at a new source and called
+			 * yylex().  If so, then we have to assure
+			 * consistency between yy_current_buffer and our
+			 * globals.  Here is the right place to do so, because
+			 * this is the first action (other than possibly a
+			 * back-up) that will match for the new input source.
+			 */
+			yy_n_chars = yy_current_buffer->yy_n_chars;
+			yy_current_buffer->yy_input_file = yyin;
+			yy_current_buffer->yy_buffer_status = YY_BUFFER_NORMAL;
+			}
+
+		/* Note that here we test for yy_c_buf_p "<=" to the position
+		 * of the first EOB in the buffer, since yy_c_buf_p will
+		 * already have been incremented past the NUL character
+		 * (since all states make transitions on EOB to the
+		 * end-of-buffer state).  Contrast this with the test
+		 * in input().
+		 */
+		if ( yy_c_buf_p <= &yy_current_buffer->yy_ch_buf[yy_n_chars] )
+			{ /* This was really a NUL. */
+			yy_state_type yy_next_state;
+
+			yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text;
+
+			yy_current_state = yy_get_previous_state();
+
+			/* Okay, we're now positioned to make the NUL
+			 * transition.  We couldn't have
+			 * yy_get_previous_state() go ahead and do it
+			 * for us because it doesn't know how to deal
+			 * with the possibility of jamming (and we don't
+			 * want to build jamming into it because then it
+			 * will run more slowly).
+			 */
+
+			yy_next_state = yy_try_NUL_trans( yy_current_state );
+
+			yy_bp = yytext_ptr + YY_MORE_ADJ;
+
+			if ( yy_next_state )
+				{
+				/* Consume the NUL. */
+				yy_cp = ++yy_c_buf_p;
+				yy_current_state = yy_next_state;
+				goto yy_match;
+				}
+
+			else
+				{
+				yy_cp = yy_c_buf_p;
+				goto yy_find_action;
+				}
+			}
+
+		else switch ( yy_get_next_buffer() )
+			{
+			case EOB_ACT_END_OF_FILE:
+				{
+				yy_did_buffer_switch_on_eof = 0;
+
+				if ( yywrap() )
+					{
+					/* Note: because we've taken care in
+					 * yy_get_next_buffer() to have set up
+					 * yytext, we can now set up
+					 * yy_c_buf_p so that if some total
+					 * hoser (like flex itself) wants to
+					 * call the scanner after we return the
+					 * YY_NULL, it'll still work - another
+					 * YY_NULL will get returned.
+					 */
+					yy_c_buf_p = yytext_ptr + YY_MORE_ADJ;
+
+					yy_act = YY_STATE_EOF(YY_START);
+					goto do_action;
+					}
+
+				else
+					{
+					if ( ! yy_did_buffer_switch_on_eof )
+						YY_NEW_FILE;
+					}
+				break;
+				}
+
+			case EOB_ACT_CONTINUE_SCAN:
+				yy_c_buf_p =
+					yytext_ptr + yy_amount_of_matched_text;
+
+				yy_current_state = yy_get_previous_state();
+
+				yy_cp = yy_c_buf_p;
+				yy_bp = yytext_ptr + YY_MORE_ADJ;
+				goto yy_match;
+
+			case EOB_ACT_LAST_MATCH:
+				yy_c_buf_p =
+				&yy_current_buffer->yy_ch_buf[yy_n_chars];
+
+				yy_current_state = yy_get_previous_state();
+
+				yy_cp = yy_c_buf_p;
+				yy_bp = yytext_ptr + YY_MORE_ADJ;
+				goto yy_find_action;
+			}
+		break;
+		}
+
+	default:
+		YY_FATAL_ERROR(
+			"fatal flex scanner internal error--no action found" );
+	} /* end of action switch */
+		} /* end of scanning one token */
+	} /* end of yylex */
+
+
+/* yy_get_next_buffer - try to read in a new buffer
+ *
+ * Returns a code representing an action:
+ *	EOB_ACT_LAST_MATCH -
+ *	EOB_ACT_CONTINUE_SCAN - continue scanning from current position
+ *	EOB_ACT_END_OF_FILE - end of file
+ */
+
+static int yy_get_next_buffer()
+	{
+	register char *dest = yy_current_buffer->yy_ch_buf;
+	register char *source = yytext_ptr;
+	register int number_to_move, i;
+	int ret_val;
+
+	if ( yy_c_buf_p > &yy_current_buffer->yy_ch_buf[yy_n_chars + 1] )
+		YY_FATAL_ERROR(
+		"fatal flex scanner internal error--end of buffer missed" );
+
+	if ( yy_current_buffer->yy_fill_buffer == 0 )
+		{ /* Don't try to fill the buffer, so this is an EOF. */
+		if ( yy_c_buf_p - yytext_ptr - YY_MORE_ADJ == 1 )
+			{
+			/* We matched a single character, the EOB, so
+			 * treat this as a final EOF.
+			 */
+			return EOB_ACT_END_OF_FILE;
+			}
+
+		else
+			{
+			/* We matched some text prior to the EOB, first
+			 * process it.
+			 */
+			return EOB_ACT_LAST_MATCH;
+			}
+		}
+
+	/* Try to read more data. */
+
+	/* First move last chars to start of buffer. */
+	number_to_move = (int) (yy_c_buf_p - yytext_ptr) - 1;
+
+	for ( i = 0; i < number_to_move; ++i )
+		*(dest++) = *(source++);
+
+	if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_EOF_PENDING )
+		/* don't do the read, it's not guaranteed to return an EOF,
+		 * just force an EOF
+		 */
+		yy_current_buffer->yy_n_chars = yy_n_chars = 0;
+
+	else
+		{
+		int num_to_read =
+			yy_current_buffer->yy_buf_size - number_to_move - 1;
+
+		while ( num_to_read <= 0 )
+			{ /* Not enough room in the buffer - grow it. */
+#ifdef YY_USES_REJECT
+			YY_FATAL_ERROR(
+"input buffer overflow, can't enlarge buffer because scanner uses REJECT" );
+#else
+
+			/* just a shorter name for the current buffer */
+			YY_BUFFER_STATE b = yy_current_buffer;
+
+			int yy_c_buf_p_offset =
+				(int) (yy_c_buf_p - b->yy_ch_buf);
+
+			if ( b->yy_is_our_buffer )
+				{
+				int new_size = b->yy_buf_size * 2;
+
+				if ( new_size <= 0 )
+					b->yy_buf_size += b->yy_buf_size / 8;
+				else
+					b->yy_buf_size *= 2;
+
+				b->yy_ch_buf = (char *)
+					/* Include room in for 2 EOB chars. */
+					yy_flex_realloc( (void *) b->yy_ch_buf,
+							 b->yy_buf_size + 2 );
+				}
+			else
+				/* Can't grow it, we don't own it. */
+				b->yy_ch_buf = 0;
+
+			if ( ! b->yy_ch_buf )
+				YY_FATAL_ERROR(
+				"fatal error - scanner input buffer overflow" );
+
+			yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset];
+
+			num_to_read = yy_current_buffer->yy_buf_size -
+						number_to_move - 1;
+#endif
+			}
+
+		if ( num_to_read > YY_READ_BUF_SIZE )
+			num_to_read = YY_READ_BUF_SIZE;
+
+		/* Read in more data. */
+		YY_INPUT( (&yy_current_buffer->yy_ch_buf[number_to_move]),
+			yy_n_chars, num_to_read );
+
+		yy_current_buffer->yy_n_chars = yy_n_chars;
+		}
+
+	if ( yy_n_chars == 0 )
+		{
+		if ( number_to_move == YY_MORE_ADJ )
+			{
+			ret_val = EOB_ACT_END_OF_FILE;
+			yyrestart( yyin );
+			}
+
+		else
+			{
+			ret_val = EOB_ACT_LAST_MATCH;
+			yy_current_buffer->yy_buffer_status =
+				YY_BUFFER_EOF_PENDING;
+			}
+		}
+
+	else
+		ret_val = EOB_ACT_CONTINUE_SCAN;
+
+	yy_n_chars += number_to_move;
+	yy_current_buffer->yy_ch_buf[yy_n_chars] = YY_END_OF_BUFFER_CHAR;
+	yy_current_buffer->yy_ch_buf[yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;
+
+	yytext_ptr = &yy_current_buffer->yy_ch_buf[0];
+
+	return ret_val;
+	}
+
+
+/* yy_get_previous_state - get the state just before the EOB char was reached */
+
+static yy_state_type yy_get_previous_state()
+	{
+	register yy_state_type yy_current_state;
+	register char *yy_cp;
+
+	yy_current_state = yy_start;
+
+	for ( yy_cp = yytext_ptr + YY_MORE_ADJ; yy_cp < yy_c_buf_p; ++yy_cp )
+		{
+		yy_current_state = yy_nxt[yy_current_state][(*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1)];
+		}
+
+	return yy_current_state;
+	}
+
+
+/* yy_try_NUL_trans - try to make a transition on the NUL character
+ *
+ * synopsis
+ *	next_state = yy_try_NUL_trans( current_state );
+ */
+
+#ifdef YY_USE_PROTOS
+static yy_state_type yy_try_NUL_trans( yy_state_type yy_current_state )
+#else
+static yy_state_type yy_try_NUL_trans( yy_current_state )
+yy_state_type yy_current_state;
+#endif
+	{
+	register int yy_is_jam;
+
+	yy_current_state = yy_nxt[yy_current_state][1];
+	yy_is_jam = (yy_current_state <= 0);
+
+	return yy_is_jam ? 0 : yy_current_state;
+	}
+
+
+#ifndef YY_NO_UNPUT
+#ifdef YY_USE_PROTOS
+static void yyunput( int c, register char *yy_bp )
+#else
+static void yyunput( c, yy_bp )
+int c;
+register char *yy_bp;
+#endif
+	{
+	register char *yy_cp = yy_c_buf_p;
+
+	/* undo effects of setting up yytext */
+	*yy_cp = yy_hold_char;
+
+	if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
+		{ /* need to shift things up to make room */
+		/* +2 for EOB chars. */
+		register int number_to_move = yy_n_chars + 2;
+		register char *dest = &yy_current_buffer->yy_ch_buf[
+					yy_current_buffer->yy_buf_size + 2];
+		register char *source =
+				&yy_current_buffer->yy_ch_buf[number_to_move];
+
+		while ( source > yy_current_buffer->yy_ch_buf )
+			*--dest = *--source;
+
+		yy_cp += (int) (dest - source);
+		yy_bp += (int) (dest - source);
+		yy_current_buffer->yy_n_chars =
+			yy_n_chars = yy_current_buffer->yy_buf_size;
+
+		if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 )
+			YY_FATAL_ERROR( "flex scanner push-back overflow" );
+		}
+
+	*--yy_cp = (char) c;
+
+
+	yytext_ptr = yy_bp;
+	yy_hold_char = *yy_cp;
+	yy_c_buf_p = yy_cp;
+	}
+#endif	/* ifndef YY_NO_UNPUT */
+
+
+#ifdef __cplusplus
+static int yyinput()
+#else
+static int input()
+#endif
+	{
+	int c;
+
+	*yy_c_buf_p = yy_hold_char;
+
+	if ( *yy_c_buf_p == YY_END_OF_BUFFER_CHAR )
+		{
+		/* yy_c_buf_p now points to the character we want to return.
+		 * If this occurs *before* the EOB characters, then it's a
+		 * valid NUL; if not, then we've hit the end of the buffer.
+		 */
+		if ( yy_c_buf_p < &yy_current_buffer->yy_ch_buf[yy_n_chars] )
+			/* This was really a NUL. */
+			*yy_c_buf_p = '\0';
+
+		else
+			{ /* need more input */
+			int offset = yy_c_buf_p - yytext_ptr;
+			++yy_c_buf_p;
+
+			switch ( yy_get_next_buffer() )
+				{
+				case EOB_ACT_LAST_MATCH:
+					/* This happens because yy_g_n_b()
+					 * sees that we've accumulated a
+					 * token and flags that we need to
+					 * try matching the token before
+					 * proceeding.  But for input(),
+					 * there's no matching to consider.
+					 * So convert the EOB_ACT_LAST_MATCH
+					 * to EOB_ACT_END_OF_FILE.
+					 */
+
+					/* Reset buffer status. */
+					yyrestart( yyin );
+
+					/* fall through */
+
+				case EOB_ACT_END_OF_FILE:
+					{
+					if ( yywrap() )
+						return EOF;
+
+					if ( ! yy_did_buffer_switch_on_eof )
+						YY_NEW_FILE;
+#ifdef __cplusplus
+					return yyinput();
+#else
+					return input();
+#endif
+					}
+
+				case EOB_ACT_CONTINUE_SCAN:
+					yy_c_buf_p = yytext_ptr + offset;
+					break;
+				}
+			}
+		}
+
+	c = *(unsigned char *) yy_c_buf_p;	/* cast for 8-bit char's */
+	*yy_c_buf_p = '\0';	/* preserve yytext */
+	yy_hold_char = *++yy_c_buf_p;
+
+
+	return c;
+	}
+
+
+#ifdef YY_USE_PROTOS
+void yyrestart( FILE *input_file )
+#else
+void yyrestart( input_file )
+FILE *input_file;
+#endif
+	{
+	if ( ! yy_current_buffer )
+		yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE );
+
+	yy_init_buffer( yy_current_buffer, input_file );
+	yy_load_buffer_state();
+	}
+
+
+#ifdef YY_USE_PROTOS
+void yy_switch_to_buffer( YY_BUFFER_STATE new_buffer )
+#else
+void yy_switch_to_buffer( new_buffer )
+YY_BUFFER_STATE new_buffer;
+#endif
+	{
+	if ( yy_current_buffer == new_buffer )
+		return;
+
+	if ( yy_current_buffer )
+		{
+		/* Flush out information for old buffer. */
+		*yy_c_buf_p = yy_hold_char;
+		yy_current_buffer->yy_buf_pos = yy_c_buf_p;
+		yy_current_buffer->yy_n_chars = yy_n_chars;
+		}
+
+	yy_current_buffer = new_buffer;
+	yy_load_buffer_state();
+
+	/* We don't actually know whether we did this switch during
+	 * EOF (yywrap()) processing, but the only time this flag
+	 * is looked at is after yywrap() is called, so it's safe
+	 * to go ahead and always set it.
+	 */
+	yy_did_buffer_switch_on_eof = 1;
+	}
+
+
+#ifdef YY_USE_PROTOS
+void yy_load_buffer_state( void )
+#else
+void yy_load_buffer_state()
+#endif
+	{
+	yy_n_chars = yy_current_buffer->yy_n_chars;
+	yytext_ptr = yy_c_buf_p = yy_current_buffer->yy_buf_pos;
+	yyin = yy_current_buffer->yy_input_file;
+	yy_hold_char = *yy_c_buf_p;
+	}
+
+
+#ifdef YY_USE_PROTOS
+YY_BUFFER_STATE yy_create_buffer( FILE *file, int size )
+#else
+YY_BUFFER_STATE yy_create_buffer( file, size )
+FILE *file;
+int size;
+#endif
+	{
+	YY_BUFFER_STATE b;
+
+	b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) );
+	if ( ! b )
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+	b->yy_buf_size = size;
+
+	/* yy_ch_buf has to be 2 characters longer than the size given because
+	 * we need to put in 2 end-of-buffer characters.
+	 */
+	b->yy_ch_buf = (char *) yy_flex_alloc( b->yy_buf_size + 2 );
+	if ( ! b->yy_ch_buf )
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+	b->yy_is_our_buffer = 1;
+
+	yy_init_buffer( b, file );
+
+	return b;
+	}
+
+
+#ifdef YY_USE_PROTOS
+void yy_delete_buffer( YY_BUFFER_STATE b )
+#else
+void yy_delete_buffer( b )
+YY_BUFFER_STATE b;
+#endif
+	{
+	if ( ! b )
+		return;
+
+	if ( b == yy_current_buffer )
+		yy_current_buffer = (YY_BUFFER_STATE) 0;
+
+	if ( b->yy_is_our_buffer )
+		yy_flex_free( (void *) b->yy_ch_buf );
+
+	yy_flex_free( (void *) b );
+	}
+
+
+#ifndef _WIN32
+#include <unistd.h>
+#else
+#ifndef YY_ALWAYS_INTERACTIVE
+#ifndef YY_NEVER_INTERACTIVE
+extern int isatty YY_PROTO(( int ));
+#endif
+#endif
+#endif
+
+#ifdef YY_USE_PROTOS
+void yy_init_buffer( YY_BUFFER_STATE b, FILE *file )
+#else
+void yy_init_buffer( b, file )
+YY_BUFFER_STATE b;
+FILE *file;
+#endif
+
+
+	{
+	yy_flush_buffer( b );
+
+	b->yy_input_file = file;
+	b->yy_fill_buffer = 1;
+
+#if YY_ALWAYS_INTERACTIVE
+	b->yy_is_interactive = 1;
+#else
+#if YY_NEVER_INTERACTIVE
+	b->yy_is_interactive = 0;
+#else
+	b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
+#endif
+#endif
+	}
+
+
+#ifdef YY_USE_PROTOS
+void yy_flush_buffer( YY_BUFFER_STATE b )
+#else
+void yy_flush_buffer( b )
+YY_BUFFER_STATE b;
+#endif
+
+	{
+	if ( ! b )
+		return;
+
+	b->yy_n_chars = 0;
+
+	/* We always need two end-of-buffer characters.  The first causes
+	 * a transition to the end-of-buffer state.  The second causes
+	 * a jam in that state.
+	 */
+	b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
+	b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
+
+	b->yy_buf_pos = &b->yy_ch_buf[0];
+
+	b->yy_at_bol = 1;
+	b->yy_buffer_status = YY_BUFFER_NEW;
+
+	if ( b == yy_current_buffer )
+		yy_load_buffer_state();
+	}
+
+
+#ifndef YY_NO_SCAN_BUFFER
+#ifdef YY_USE_PROTOS
+YY_BUFFER_STATE yy_scan_buffer( char *base, yy_size_t size )
+#else
+YY_BUFFER_STATE yy_scan_buffer( base, size )
+char *base;
+yy_size_t size;
+#endif
+	{
+	YY_BUFFER_STATE b;
+
+	if ( size < 2 ||
+	     base[size-2] != YY_END_OF_BUFFER_CHAR ||
+	     base[size-1] != YY_END_OF_BUFFER_CHAR )
+		/* They forgot to leave room for the EOB's. */
+		return 0;
+
+	b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) );
+	if ( ! b )
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
+
+	b->yy_buf_size = size - 2;	/* "- 2" to take care of EOB's */
+	b->yy_buf_pos = b->yy_ch_buf = base;
+	b->yy_is_our_buffer = 0;
+	b->yy_input_file = 0;
+	b->yy_n_chars = b->yy_buf_size;
+	b->yy_is_interactive = 0;
+	b->yy_at_bol = 1;
+	b->yy_fill_buffer = 0;
+	b->yy_buffer_status = YY_BUFFER_NEW;
+
+	yy_switch_to_buffer( b );
+
+	return b;
+	}
+#endif
+
+
+#ifndef YY_NO_SCAN_STRING
+#ifdef YY_USE_PROTOS
+YY_BUFFER_STATE yy_scan_string( yyconst char *yy_str )
+#else
+YY_BUFFER_STATE yy_scan_string( yy_str )
+yyconst char *yy_str;
+#endif
+	{
+	int len;
+	for ( len = 0; yy_str[len]; ++len )
+		;
+
+	return yy_scan_bytes( yy_str, len );
+	}
+#endif
+
+
+#ifndef YY_NO_SCAN_BYTES
+#ifdef YY_USE_PROTOS
+YY_BUFFER_STATE yy_scan_bytes( yyconst char *bytes, int len )
+#else
+YY_BUFFER_STATE yy_scan_bytes( bytes, len )
+yyconst char *bytes;
+int len;
+#endif
+	{
+	YY_BUFFER_STATE b;
+	char *buf;
+	yy_size_t n;
+	int i;
+
+	/* Get memory for full buffer, including space for trailing EOB's. */
+	n = len + 2;
+	buf = (char *) yy_flex_alloc( n );
+	if ( ! buf )
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
+
+	for ( i = 0; i < len; ++i )
+		buf[i] = bytes[i];
+
+	buf[len] = buf[len+1] = YY_END_OF_BUFFER_CHAR;
+
+	b = yy_scan_buffer( buf, n );
+	if ( ! b )
+		YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
+
+	/* It's okay to grow etc. this buffer, and we should throw it
+	 * away when we're done.
+	 */
+	b->yy_is_our_buffer = 1;
+
+	return b;
+	}
+#endif
+
+
+#ifndef YY_NO_PUSH_STATE
+#ifdef YY_USE_PROTOS
+static void yy_push_state( int new_state )
+#else
+static void yy_push_state( new_state )
+int new_state;
+#endif
+	{
+	if ( yy_start_stack_ptr >= yy_start_stack_depth )
+		{
+		yy_size_t new_size;
+
+		yy_start_stack_depth += YY_START_STACK_INCR;
+		new_size = yy_start_stack_depth * sizeof( int );
+
+		if ( ! yy_start_stack )
+			yy_start_stack = (int *) yy_flex_alloc( new_size );
+
+		else
+			yy_start_stack = (int *) yy_flex_realloc(
+					(void *) yy_start_stack, new_size );
+
+		if ( ! yy_start_stack )
+			YY_FATAL_ERROR(
+			"out of memory expanding start-condition stack" );
+		}
+
+	yy_start_stack[yy_start_stack_ptr++] = YY_START;
+
+	BEGIN(new_state);
+	}
+#endif
+
+
+#ifndef YY_NO_POP_STATE
+static void yy_pop_state()
+	{
+	if ( --yy_start_stack_ptr < 0 )
+		YY_FATAL_ERROR( "start-condition stack underflow" );
+
+	BEGIN(yy_start_stack[yy_start_stack_ptr]);
+	}
+#endif
+
+
+#ifndef YY_NO_TOP_STATE
+static int yy_top_state()
+	{
+	return yy_start_stack[yy_start_stack_ptr - 1];
+	}
+#endif
+
+#ifndef YY_EXIT_FAILURE
+#define YY_EXIT_FAILURE 2
+#endif
+
+#ifdef YY_USE_PROTOS
+static void yy_fatal_error( yyconst char msg[] )
+#else
+static void yy_fatal_error( msg )
+char msg[];
+#endif
+	{
+	(void) fprintf( stderr, "%s\n", msg );
+	exit( YY_EXIT_FAILURE );
+	}
+
+
+
+/* Redefine yyless() so it works in section 3 code. */
+
+#undef yyless
+#define yyless(n) \
+	do \
+		{ \
+		/* Undo effects of setting up yytext. */ \
+		yytext[yyleng] = yy_hold_char; \
+		yy_c_buf_p = yytext + n; \
+		yy_hold_char = *yy_c_buf_p; \
+		*yy_c_buf_p = '\0'; \
+		yyleng = n; \
+		} \
+	while ( 0 )
+
+
+/* Internal utility routines. */
+
+#ifndef yytext_ptr
+#ifdef YY_USE_PROTOS
+static void yy_flex_strncpy( char *s1, yyconst char *s2, int n )
+#else
+static void yy_flex_strncpy( s1, s2, n )
+char *s1;
+yyconst char *s2;
+int n;
+#endif
+	{
+	register int i;
+	for ( i = 0; i < n; ++i )
+		s1[i] = s2[i];
+	}
+#endif
+
+#ifdef YY_NEED_STRLEN
+#ifdef YY_USE_PROTOS
+static int yy_flex_strlen( yyconst char *s )
+#else
+static int yy_flex_strlen( s )
+yyconst char *s;
+#endif
+	{
+	register int n;
+	for ( n = 0; s[n]; ++n )
+		;
+
+	return n;
+	}
+#endif
+
+
+#ifdef YY_USE_PROTOS
+static void *yy_flex_alloc( yy_size_t size )
+#else
+static void *yy_flex_alloc( size )
+yy_size_t size;
+#endif
+	{
+	return (void *) malloc( size );
+	}
+
+#ifdef YY_USE_PROTOS
+static void *yy_flex_realloc( void *ptr, yy_size_t size )
+#else
+static void *yy_flex_realloc( ptr, size )
+void *ptr;
+yy_size_t size;
+#endif
+	{
+	/* The cast to (char *) in the following accommodates both
+	 * implementations that use char* generic pointers, and those
+	 * that use void* generic pointers.  It works with the latter
+	 * because both ANSI C and C++ allow castless assignment from
+	 * any pointer type to void*, and deal with argument conversions
+	 * as though doing an assignment.
+	 */
+	return (void *) realloc( (char *) ptr, size );
+	}
+
+#ifdef YY_USE_PROTOS
+static void yy_flex_free( void *ptr )
+#else
+static void yy_flex_free( ptr )
+void *ptr;
+#endif
+	{
+	free( ptr );
+	}
+
+#if YY_MAIN
+int main()
+	{
+	yylex();
+	return 0;
+	}
+#endif
+#line 227 "zconf.l"
+
+void zconf_starthelp(void)
+{
+	new_string();
+	last_ts = first_ts = 0;
+	BEGIN(HELP);
+}
+
+static void zconf_endhelp(void)
+{
+	zconflval.string = text;
+	BEGIN(INITIAL); 
+}
+
+void zconf_initscan(const char *name)
+{
+	yyin = fopen(name, "r");
+	if (!yyin) {
+		printf("can't find file %s\n", name);
+		exit(1);
+	}
+	//fprintf(stderr, "zconf_initscan: %s\n", name);
+
+	current_buf = malloc(sizeof(*current_buf));
+	memset(current_buf, 0, sizeof(*current_buf));
+
+	current_file = file_lookup(name);
+	current_file->lineno = 1;
+	current_file->flags = FILE_BUSY;
+}
+
+void zconf_nextfile(const char *name)
+{
+	struct file *file = file_lookup(name);
+	struct buffer *buf = malloc(sizeof(*buf));
+	memset(buf, 0, sizeof(*buf));
+
+	current_buf->state = YY_CURRENT_BUFFER;
+	yyin = fopen(name, "r");
+	if (!yyin) {
+		printf("%s:%d: can't open file \"%s\"\n", zconf_curname(), zconf_lineno(), name);
+		exit(1);
+	}
+	yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
+	buf->parent = current_buf;
+	current_buf = buf;
+
+	//fprintf(stderr, "zconf_nextfile: %s\n", name);
+
+	if (file->flags & FILE_BUSY) {
+		printf("recursive scan (%s)?\n", name);
+		exit(1);
+	}
+	if (file->flags & FILE_SCANNED) {
+		printf("file %s already scanned?\n", name);
+		exit(1);
+	}
+	file->flags |= FILE_BUSY;
+	file->lineno = 1;
+	file->parent = current_file;
+	current_file = file;
+}
+
+static struct buffer *zconf_endfile(void)
+{
+	struct buffer *parent;
+
+	current_file->flags |= FILE_SCANNED;
+	current_file->flags &= ~FILE_BUSY;
+	current_file = current_file->parent;
+
+	parent = current_buf->parent;
+	if (parent) {
+		yy_delete_buffer(YY_CURRENT_BUFFER);
+		yy_switch_to_buffer(parent->state);
+	}
+	free(current_buf);
+	current_buf = parent;
+
+	return parent;
+}
+
+int zconf_lineno(void)
+{
+	if (current_buf)
+		return current_file->lineno;
+	else
+		return 0;
+}
+
+char *zconf_curname(void)
+{
+	if (current_buf)
+		return current_file->name;
+	else
+		return "<none>";
+}
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
new file mode 100644
index 000000000000..688945b872a0
--- /dev/null
+++ b/scripts/kconfig/lkc.h
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#ifndef LKC_H
+#define LKC_H
+
+#include "expr.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef LKC_DIRECT_LINK
+#define P(name,type,arg)	extern type name arg
+#else
+#include "lkc_defs.h"
+#define P(name,type,arg)	extern type (*name ## _p) arg
+#endif
+#include "lkc_proto.h"
+#undef P
+
+void symbol_end(char *help);
+int zconfparse(void);
+void zconfdump(FILE *out);
+
+extern int zconfdebug;
+void zconf_starthelp(void);
+void zconf_initscan(const char *name);
+void zconf_nextfile(const char *name);
+int zconf_lineno(void);
+char *zconf_curname(void);
+
+/* confdata.c */
+extern const char conf_def_filename[];
+extern char conf_filename[];
+
+char *conf_get_default_confname(void);
+
+/* kconfig_load.c */
+void kconfig_load(void);
+
+/* menu.c */
+void menu_init(void);
+void menu_add_menu(void);
+void menu_end_menu(void);
+void menu_add_entry(struct symbol *sym);
+void menu_end_entry(void);
+struct property *create_prop(enum prop_type type);
+void menu_add_dep(struct expr *dep);
+struct property *menu_add_prop(int token, char *prompt, struct symbol *def, struct expr *dep);
+void menu_finalize(struct menu *parent);
+void menu_set_type(int type);
+struct file *file_lookup(const char *name);
+int file_write_dep(const char *name);
+
+extern struct menu *current_entry;
+extern struct menu *current_menu;
+
+/* symbol.c */
+void sym_init(void);
+void sym_clear_all_valid(void);
+
+static inline tristate sym_get_tristate_value(struct symbol *sym)
+{
+	return S_TRI(sym->curr);
+}
+
+
+static inline struct symbol *sym_get_choice_value(struct symbol *sym)
+{
+	return (struct symbol *)S_VAL(sym->curr);
+}
+
+static inline bool sym_set_choice_value(struct symbol *ch, struct symbol *chval)
+{
+	return sym_set_tristate_value(chval, yes);
+}
+
+static inline bool sym_is_choice(struct symbol *sym)
+{
+	return sym->flags & SYMBOL_CHOICE ? true : false;
+}
+
+static inline bool sym_is_choice_value(struct symbol *sym)
+{
+	return sym->flags & SYMBOL_CHOICEVAL ? true : false;
+}
+
+static inline bool sym_is_optional(struct symbol *sym)
+{
+	return sym->flags & SYMBOL_OPTIONAL ? true : false;
+}
+
+static inline bool sym_has_value(struct symbol *sym)
+{
+	//return S_VAL(sym->def) != NULL;
+	return sym->flags & SYMBOL_NEW ? false : true;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LKC_H */
diff --git a/scripts/kconfig/lkc_proto.h b/scripts/kconfig/lkc_proto.h
new file mode 100644
index 000000000000..116d7593bd81
--- /dev/null
+++ b/scripts/kconfig/lkc_proto.h
@@ -0,0 +1,38 @@
+
+/* confdata.c */
+P(conf_parse,void,(const char *name));
+P(conf_read,int,(const char *name));
+P(conf_write,int,(const char *name));
+
+/* menu.c */
+P(rootmenu,struct menu,);
+
+P(menu_is_visible,bool,(struct menu *menu));
+P(menu_get_prompt,const char *,(struct menu *menu));
+P(menu_get_root_menu,struct menu *,(struct menu *menu));
+P(menu_get_parent_menu,struct menu *,(struct menu *menu));
+
+/* symbol.c */
+P(symbol_hash,struct symbol *,[SYMBOL_HASHSIZE]);
+P(sym_change_count,int,);
+
+P(sym_lookup,struct symbol *,(const char *name, int isconst));
+P(sym_find,struct symbol *,(const char *name));
+P(sym_type_name,const char *,(int type));
+P(sym_calc_value,void,(struct symbol *sym));
+P(sym_get_type,int,(struct symbol *sym));
+P(sym_tristate_within_range,bool,(struct symbol *sym,tristate tri));
+P(sym_set_tristate_value,bool,(struct symbol *sym,tristate tri));
+P(sym_toggle_tristate_value,tristate,(struct symbol *sym));
+P(sym_string_valid,bool,(struct symbol *sym, const char *newval));
+P(sym_set_string_value,bool,(struct symbol *sym, const char *newval));
+P(sym_is_changable,bool,(struct symbol *sym));
+P(sym_get_choice_prop,struct property *,(struct symbol *sym));
+P(sym_get_default_prop,struct property *,(struct symbol *sym));
+P(sym_get_string_value,const char *,(struct symbol *sym));
+
+P(prop_get_type_name,const char *,(enum prop_type type));
+
+/* expr.c */
+P(expr_compare_type,int,(enum expr_type t1, enum expr_type t2));
+P(expr_print,void,(struct expr *e, void (*fn)(void *, const char *), void *data, int prevtoken));
diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
new file mode 100644
index 000000000000..232e60843348
--- /dev/null
+++ b/scripts/kconfig/mconf.c
@@ -0,0 +1,714 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <sys/ioctl.h>
+#include <sys/wait.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+static char menu_backtitle[128];
+static const char menu_instructions[] =
+	"Arrow keys navigate the menu.  "
+	"<Enter> selects submenus --->.  "
+	"Highlighted letters are hotkeys.  "
+	"Pressing <Y> includes, <N> excludes, <M> modularizes features.  "
+	"Press <Esc><Esc> to exit, <?> for Help.  "
+	"Legend: [*] built-in  [ ] excluded  <M> module  < > module capable",
+radiolist_instructions[] =
+	"Use the arrow keys to navigate this window or "
+	"press the hotkey of the item you wish to select "
+	"followed by the <SPACE BAR>. "
+	"Press <?> for additional information about this option.",
+inputbox_instructions_int[] =
+	"Please enter a decimal value. "
+	"Fractions will not be accepted.  "
+	"Use the <TAB> key to move from the input field to the buttons below it.",
+inputbox_instructions_hex[] =
+	"Please enter a hexadecimal value. "
+	"Use the <TAB> key to move from the input field to the buttons below it.",
+inputbox_instructions_string[] =
+	"Please enter a string value. "
+	"Use the <TAB> key to move from the input field to the buttons below it.",
+setmod_text[] =
+	"This feature depends on another which has been configured as a module.\n"
+	"As a result, this feature will be built as a module.",
+nohelp_text[] =
+	"There is no help available for this kernel option.\n",
+load_config_text[] =
+	"Enter the name of the configuration file you wish to load.  "
+	"Accept the name shown to restore the configuration you "
+	"last retrieved.  Leave blank to abort.",
+load_config_help[] =
+	"\n"
+	"For various reasons, one may wish to keep several different kernel\n"
+	"configurations available on a single machine.\n"
+	"\n"
+	"If you have saved a previous configuration in a file other than the\n"
+	"kernel's default, entering the name of the file here will allow you\n"
+	"to modify that configuration.\n"
+	"\n"
+	"If you are uncertain, then you have probably never used alternate\n"
+	"configuration files.  You should therefor leave this blank to abort.\n",
+save_config_text[] =
+	"Enter a filename to which this configuration should be saved "
+	"as an alternate.  Leave blank to abort.",
+save_config_help[] =
+	"\n"
+	"For various reasons, one may wish to keep different kernel\n"
+	"configurations available on a single machine.\n"
+	"\n"
+	"Entering a file name here will allow you to later retrieve, modify\n"
+	"and use the current configuration as an alternate to whatever\n"
+	"configuration options you have selected at that time.\n"
+	"\n"
+	"If you are uncertain what all this means then you should probably\n"
+	"leave this blank.\n"
+;
+
+static char buf[4096], *bufptr = buf;
+static char input_buf[4096];
+static char *args[1024], **argptr = args;
+static int indent = 0;
+static int rows, cols;
+static struct menu *current_menu;
+static int child_count;
+static int do_resize;
+
+static void conf(struct menu *menu);
+static void conf_choice(struct menu *menu);
+static void conf_string(struct menu *menu);
+static void conf_load(void);
+static void conf_save(void);
+static void show_textbox(const char *title, const char *text, int r, int c);
+static void show_helptext(const char *title, const char *text);
+static void show_help(struct menu *menu);
+static void show_readme(void);
+
+static void cprint_init(void);
+static int cprint1(const char *fmt, ...);
+static void cprint_done(void);
+static int cprint(const char *fmt, ...);
+
+static void init_wsize(void)
+{
+	struct winsize ws;
+
+	if (ioctl(1, TIOCGWINSZ, &ws) == -1) {
+		rows = 24;
+		cols = 80;
+	} else {
+		rows = ws.ws_row;
+		cols = ws.ws_col;
+	}
+
+	if (rows < 19 || cols < 80) {
+		fprintf(stderr, "Your display is too small to run Menuconfig!\n");
+		fprintf(stderr, "It must be at least 19 lines by 80 columns.\n");
+		exit(1);
+	}
+
+	rows -= 4;
+	cols -= 5;
+}
+
+static void cprint_init(void)
+{
+	bufptr = buf;
+	argptr = args;
+	memset(args, 0, sizeof(args));
+	indent = 0;
+	child_count = 0;
+	cprint("./scripts/lxdialog/lxdialog");
+	cprint("--backtitle");
+	cprint(menu_backtitle);
+}
+
+static int cprint1(const char *fmt, ...)
+{
+	va_list ap;
+	int res;
+
+	if (!*argptr)
+		*argptr = bufptr;
+	va_start(ap, fmt);
+	res = vsprintf(bufptr, fmt, ap);
+	va_end(ap);
+	bufptr += res;
+
+	return res;
+}
+
+static void cprint_done(void)
+{
+	*bufptr++ = 0;
+	argptr++;
+}
+
+static int cprint(const char *fmt, ...)
+{
+	va_list ap;
+	int res;
+
+	*argptr++ = bufptr;
+	va_start(ap, fmt);
+	res = vsprintf(bufptr, fmt, ap);
+	va_end(ap);
+	bufptr += res;
+	*bufptr++ = 0;
+
+	return res;
+}
+
+pid_t pid;
+
+static void winch_handler(int sig)
+{
+	if (!do_resize) {
+		kill(pid, SIGINT);
+		do_resize = 1;
+	}
+}
+
+static int exec_conf(void)
+{
+	int pipefd[2], stat, size;
+	struct sigaction sa;
+	sigset_t sset, osset;
+
+	sigemptyset(&sset);
+	sigaddset(&sset, SIGINT);
+	sigprocmask(SIG_BLOCK, &sset, &osset);
+
+	signal(SIGINT, SIG_DFL);
+
+	sa.sa_handler = winch_handler;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = SA_RESTART;
+	sigaction(SIGWINCH, &sa, NULL);
+
+	*argptr++ = NULL;
+
+	pipe(pipefd);
+	pid = fork();
+	if (pid == 0) {
+		sigprocmask(SIG_SETMASK, &osset, NULL);
+		dup2(pipefd[1], 2);
+		close(pipefd[0]);
+		close(pipefd[1]);
+		execv(args[0], args);
+		_exit(EXIT_FAILURE);
+	}
+
+	close(pipefd[1]);
+	bufptr = input_buf;
+	while (1) {
+		size = input_buf + sizeof(input_buf) - bufptr;
+		size = read(pipefd[0], bufptr, size);
+		if (size <= 0) {
+			if (size < 0) {
+				if (errno == EINTR || errno == EAGAIN)
+					continue;
+				perror("read");
+			}
+			break;
+		}
+		bufptr += size;
+	}
+	*bufptr++ = 0;
+	close(pipefd[0]);
+	waitpid(pid, &stat, 0);
+
+	if (do_resize) {
+		init_wsize();
+		do_resize = 0;
+		sigprocmask(SIG_SETMASK, &osset, NULL);
+		return -1;
+	}
+	if (WIFSIGNALED(stat)) {
+		printf("\finterrupted(%d)\n", WTERMSIG(stat));
+		exit(1);
+	}
+#if 0
+	printf("\fexit state: %d\nexit data: '%s'\n", WEXITSTATUS(stat), input_buf);
+	sleep(1);
+#endif
+	sigpending(&sset);
+	if (sigismember(&sset, SIGINT)) {
+		printf("\finterrupted\n");
+		exit(1);
+	}
+	sigprocmask(SIG_SETMASK, &osset, NULL);
+
+	return WEXITSTATUS(stat);
+}
+
+static void build_conf(struct menu *menu)
+{
+	struct symbol *sym;
+	struct property *prop;
+	struct menu *child;
+	int type, tmp, doint = 2;
+	tristate val;
+	char ch;
+
+	if (!menu_is_visible(menu))
+		return;
+
+	sym = menu->sym;
+	prop = menu->prompt;
+	if (!sym) {
+		if (prop && menu != current_menu) {
+			const char *prompt = menu_get_prompt(menu);
+			switch (prop->type) {
+			case P_MENU:
+				child_count++;
+				cprint("m%p", menu);
+				if (menu->parent != &rootmenu)
+					cprint1("   %*c", indent + 1, ' ');
+				cprint1("%s  --->", prompt);
+				cprint_done();
+				return;
+			default:
+				if (prompt) {
+					child_count++;
+					cprint(":%p", menu);
+					cprint("---%*c%s", indent + 1, ' ', prompt);
+				}
+			}
+		} else
+			doint = 0;
+		goto conf_childs;
+	}
+
+	type = sym_get_type(sym);
+	if (sym_is_choice(sym)) {
+		struct symbol *def_sym = sym_get_choice_value(sym);
+		struct menu *def_menu = NULL;
+
+		child_count++;
+		for (child = menu->list; child; child = child->next) {
+			if (menu_is_visible(child) && child->sym == def_sym)
+				def_menu = child;
+		}
+
+		val = sym_get_tristate_value(sym);
+		if (sym_is_changable(sym)) {
+			cprint("t%p", menu);
+			switch (type) {
+			case S_BOOLEAN:
+				cprint1("[%c]", val == no ? ' ' : '*');
+				break;
+			case S_TRISTATE:
+				switch (val) {
+				case yes: ch = '*'; break;
+				case mod: ch = 'M'; break;
+				default:  ch = ' '; break;
+				}
+				cprint1("<%c>", ch);
+				break;
+			}
+		} else {
+			cprint("%c%p", def_menu ? 't' : ':', menu);
+			cprint1("   ");
+		}
+
+		cprint1("%*c%s", indent + 1, ' ', menu_get_prompt(menu));
+		if (val == yes) {
+			if (def_menu) {
+				cprint1(" (%s)", menu_get_prompt(def_menu));
+				cprint1("  --->");
+				cprint_done();
+				if (def_menu->list) {
+					indent += 2;
+					build_conf(def_menu);
+					indent -= 2;
+				}
+			} else
+				cprint_done();
+			return;
+		}
+		cprint_done();
+	} else {
+		child_count++;
+		val = sym_get_tristate_value(sym);
+		if (sym_is_choice_value(sym) && val == yes) {
+			cprint(":%p", menu);
+			cprint1("   ");
+		} else {
+			switch (type) {
+			case S_BOOLEAN:
+				cprint("t%p", menu);
+				cprint1("[%c]", val == no ? ' ' : '*');
+				break;
+			case S_TRISTATE:
+				cprint("t%p", menu);
+				switch (val) {
+				case yes: ch = '*'; break;
+				case mod: ch = 'M'; break;
+				default:  ch = ' '; break;
+				}
+				cprint1("<%c>", ch);
+				break;
+			default:
+				cprint("s%p", menu);
+				tmp = cprint1("(%s)", sym_get_string_value(sym));
+				tmp = indent - tmp + 4;
+				if (tmp < 0)
+					tmp = 0;
+				cprint1("%*c%s%s", tmp, ' ', menu_get_prompt(menu),
+					sym_has_value(sym) ? "" : " (NEW)");
+				cprint_done();
+				goto conf_childs;
+			}
+		}
+		cprint1("%*c%s%s", indent + 1, ' ', menu_get_prompt(menu),
+			sym_has_value(sym) ? "" : " (NEW)");
+		cprint_done();
+	}
+
+conf_childs:
+	indent += doint;
+	for (child = menu->list; child; child = child->next)
+		build_conf(child);
+	indent -= doint;
+}
+
+static void conf(struct menu *menu)
+{
+	struct menu *submenu;
+	const char *prompt = menu_get_prompt(menu);
+	struct symbol *sym;
+	char active_entry[40];
+	int stat, type, i;
+
+	active_entry[0] = 0;
+	while (1) {
+		cprint_init();
+		cprint("--title");
+		cprint("%s", prompt ? prompt : "Main Menu");
+		cprint("--menu");
+		cprint(menu_instructions);
+		cprint("%d", rows);
+		cprint("%d", cols);
+		cprint("%d", rows - 10);
+		cprint("%s", active_entry);
+		current_menu = menu;
+		build_conf(menu);
+		if (!child_count)
+			break;
+		if (menu == &rootmenu) {
+			cprint(":");
+			cprint("--- ");
+			cprint("L");
+			cprint("Load an Alternate Configuration File");
+			cprint("S");
+			cprint("Save Configuration to an Alternate File");
+		}
+		stat = exec_conf();
+		if (stat < 0)
+			continue;
+
+		if (stat == 1 || stat == 255)
+			break;
+
+		type = input_buf[0];
+		if (!type)
+			continue;
+
+		for (i = 0; input_buf[i] && !isspace(input_buf[i]); i++)
+			;
+		if (i >= sizeof(active_entry))
+			i = sizeof(active_entry) - 1;
+		input_buf[i] = 0;
+		strcpy(active_entry, input_buf);
+
+		sym = NULL;
+		submenu = NULL;
+		if (sscanf(input_buf + 1, "%p", &submenu) == 1)
+			sym = submenu->sym;
+
+		switch (stat) {
+		case 0:
+			switch (type) {
+			case 'm':
+				conf(submenu);
+				break;
+			case 't':
+				if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
+					conf_choice(submenu);
+				break;
+			case 's':
+				conf_string(submenu);
+				break;
+			case 'L':
+				conf_load();
+				break;
+			case 'S':
+				conf_save();
+				break;
+			}
+			break;
+		case 2:
+			if (sym)
+				show_help(submenu);
+			else
+				show_readme();
+			break;
+		case 3:
+			if (type == 't') {
+				if (sym_set_tristate_value(sym, yes))
+					break;
+				if (sym_set_tristate_value(sym, mod))
+					show_textbox(NULL, setmod_text, 6, 74);
+			}
+			break;
+		case 4:
+			if (type == 't')
+				sym_set_tristate_value(sym, no);
+			break;
+		case 5:
+			if (type == 't')
+				sym_set_tristate_value(sym, mod);
+			break;
+		case 6:
+			if (type == 't')
+				sym_toggle_tristate_value(sym);
+			break;
+		}
+	}
+}
+
+static void show_textbox(const char *title, const char *text, int r, int c)
+{
+	int fd;
+
+	fd = creat(".help.tmp", 0777);
+	write(fd, text, strlen(text));
+	close(fd);
+	do {
+		cprint_init();
+		if (title) {
+			cprint("--title");
+			cprint("%s", title);
+		}
+		cprint("--textbox");
+		cprint(".help.tmp");
+		cprint("%d", r);
+		cprint("%d", c);
+	} while (exec_conf() < 0);
+	unlink(".help.tmp");
+}
+
+static void show_helptext(const char *title, const char *text)
+{
+	show_textbox(title, text, rows, cols);
+}
+
+static void show_help(struct menu *menu)
+{
+	const char *help;
+
+	help = menu->sym->help;
+	if (!help)
+		help = nohelp_text;
+	show_helptext(menu_get_prompt(menu), help);
+}
+
+static void show_readme(void)
+{
+	do {
+		cprint_init();
+		cprint("--textbox");
+		cprint("scripts/README.Menuconfig");
+		cprint("%d", rows);
+		cprint("%d", cols);
+	} while (exec_conf() == -1);
+}
+
+static void conf_choice(struct menu *menu)
+{
+	const char *prompt = menu_get_prompt(menu);
+	struct menu *child;
+	struct symbol *active;
+	int stat;
+
+	while (1) {
+		cprint_init();
+		cprint("--title");
+		cprint("%s", prompt ? prompt : "Main Menu");
+		cprint("--radiolist");
+		cprint(radiolist_instructions);
+		cprint("15");
+		cprint("70");
+		cprint("6");
+
+		current_menu = menu;
+		active = sym_get_choice_value(menu->sym);
+		for (child = menu->list; child; child = child->next) {
+			if (!menu_is_visible(child))
+				continue;
+			cprint("%p", child);
+			cprint("%s", menu_get_prompt(child));
+			cprint(child->sym == active ? "ON" : "OFF");
+		}
+
+		stat = exec_conf();
+		switch (stat) {
+		case 0:
+			if (sscanf(input_buf, "%p", &menu) != 1)
+				break;
+			sym_set_tristate_value(menu->sym, yes);
+			return;
+		case 1:
+			show_help(menu);
+			break;
+		case 255:
+			return;
+		}
+	}
+}
+
+static void conf_string(struct menu *menu)
+{
+	const char *prompt = menu_get_prompt(menu);
+	int stat;
+
+	while (1) {
+		cprint_init();
+		cprint("--title");
+		cprint("%s", prompt ? prompt : "Main Menu");
+		cprint("--inputbox");
+		switch (sym_get_type(menu->sym)) {
+		case S_INT:
+			cprint(inputbox_instructions_int);
+			break;
+		case S_HEX:
+			cprint(inputbox_instructions_hex);
+			break;
+		case S_STRING:
+			cprint(inputbox_instructions_string);
+			break;
+		default:
+			/* panic? */;
+		}
+		cprint("10");
+		cprint("75");
+		cprint("%s", sym_get_string_value(menu->sym));
+		stat = exec_conf();
+		switch (stat) {
+		case 0:
+			if (sym_set_string_value(menu->sym, input_buf))
+				return;
+			show_textbox(NULL, "You have made an invalid entry.", 5, 43);
+			break;
+		case 1:
+			show_help(menu);
+			break;
+		case 255:
+			return;
+		}
+	}
+}
+
+static void conf_load(void)
+{
+	int stat;
+
+	while (1) {
+		cprint_init();
+		cprint("--inputbox");
+		cprint(load_config_text);
+		cprint("11");
+		cprint("55");
+		cprint("%s", conf_filename);
+		stat = exec_conf();
+		switch(stat) {
+		case 0:
+			if (!input_buf[0])
+				return;
+			if (!conf_read(input_buf))
+				return;
+			show_textbox(NULL, "File does not exist!", 5, 38);
+			break;
+		case 1:
+			show_helptext("Load Alternate Configuration", load_config_help);
+			break;
+		case 255:
+			return;
+		}
+	}
+}
+
+static void conf_save(void)
+{
+	int stat;
+
+	while (1) {
+		cprint_init();
+		cprint("--inputbox");
+		cprint(save_config_text);
+		cprint("11");
+		cprint("55");
+		cprint("%s", conf_filename);
+		stat = exec_conf();
+		switch(stat) {
+		case 0:
+			if (!input_buf[0])
+				return;
+			if (!conf_write(input_buf))
+				return;
+			show_textbox(NULL, "Can't create file!  Probably a nonexistent directory.", 5, 60);
+			break;
+		case 1:
+			show_helptext("Save Alternate Configuration", save_config_help);
+			break;
+		case 255:
+			return;
+		}
+	}
+}
+
+int main(int ac, char **av)
+{
+	int stat;
+	conf_parse(av[1]);
+	conf_read(NULL);
+
+	sprintf(menu_backtitle, "Linux Kernel v%s.%s.%s%s Configuration",
+		getenv("VERSION"), getenv("PATCHLEVEL"),
+		getenv("SUBLEVEL"), getenv("EXTRAVERSION"));
+
+	init_wsize();
+	conf(&rootmenu);
+
+	do {
+		cprint_init();
+		cprint("--yesno");
+		cprint("Do you wish to save your new kernel configuration?");
+		cprint("5");
+		cprint("60");
+		stat = exec_conf();
+	} while (stat < 0);
+
+	if (stat == 0) {
+		conf_write(NULL);
+		printf("\n\n"
+			"*** End of Linux kernel configuration.\n"
+			"*** Check the top-level Makefile for additional configuration.\n"
+			"*** Next, you may run 'make bzImage', 'make bzdisk', or 'make install'.\n\n");
+	} else
+		printf("\n\nYour kernel configuration changes were NOT saved.\n\n");
+
+	return 0;
+}
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
new file mode 100644
index 000000000000..4595110db628
--- /dev/null
+++ b/scripts/kconfig/menu.c
@@ -0,0 +1,309 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+struct menu rootmenu;
+struct menu *current_menu, *current_entry;
+static struct menu **last_entry_ptr;
+
+struct file *file_list;
+struct file *current_file;
+
+void menu_init(void)
+{
+	current_entry = current_menu = &rootmenu;
+	last_entry_ptr = &rootmenu.list;
+}
+
+void menu_add_entry(struct symbol *sym)
+{
+	struct menu *menu;
+
+	menu = malloc(sizeof(*menu));
+	memset(menu, 0, sizeof(*menu));
+	menu->sym = sym;
+	menu->parent = current_menu;
+	menu->file = current_file;
+	menu->lineno = zconf_lineno();
+
+	*last_entry_ptr = menu;
+	last_entry_ptr = &menu->next;
+	current_entry = menu;
+}
+
+void menu_end_entry(void)
+{
+}
+
+void menu_add_menu(void)
+{
+	current_menu = current_entry;
+	last_entry_ptr = &current_entry->list;
+}
+
+void menu_end_menu(void)
+{
+	last_entry_ptr = &current_menu->next;
+	current_menu = current_menu->parent;
+}
+
+void menu_add_dep(struct expr *dep)
+{
+	current_entry->dep = expr_alloc_and(current_entry->dep, dep);
+}
+
+void menu_set_type(int type)
+{
+	struct symbol *sym = current_entry->sym;
+
+	if (sym->type == type)
+		return;
+	if (sym->type == S_UNKNOWN) {
+		sym->type = type;
+		return;
+	}
+	fprintf(stderr, "%s:%d: type of '%s' redefined from '%s' to '%s'\n",
+		current_entry->file->name, current_entry->lineno,
+		sym->name ? sym->name : "<choice>", sym_type_name(sym->type), sym_type_name(type));
+}
+
+struct property *create_prop(enum prop_type type)
+{
+	struct property *prop;
+
+	prop = malloc(sizeof(*prop));
+	memset(prop, 0, sizeof(*prop));
+	prop->type = type;
+	prop->file = current_file;
+	prop->lineno = zconf_lineno();
+
+	return prop;
+}
+
+struct property *menu_add_prop(int token, char *prompt, struct symbol *def, struct expr *dep)
+{
+	struct property *prop = create_prop(token);
+	struct property **propp;
+
+	prop->sym = current_entry->sym;
+	prop->menu = current_entry;
+	prop->text = prompt;
+	prop->def = def;
+	E_EXPR(prop->visible) = dep;
+
+	if (prompt)
+		current_entry->prompt = prop;
+
+	/* append property to the prop list of symbol */
+	if (prop->sym) {
+		for (propp = &prop->sym->prop; *propp; propp = &(*propp)->next)
+			;
+		*propp = prop;
+	}
+
+	return prop;
+}
+
+void menu_add_prompt(int token, char *prompt, struct expr *dep)
+{
+	current_entry->prompt = menu_add_prop(token, prompt, NULL, dep);
+}
+
+void menu_add_default(int token, struct symbol *def, struct expr *dep)
+{
+	current_entry->prompt = menu_add_prop(token, NULL, def, dep);
+}
+
+void menu_finalize(struct menu *parent)
+{
+	struct menu *menu, *last_menu;
+	struct symbol *sym;
+	struct property *prop;
+	struct expr *parentdep, *basedep, *dep, *dep2;
+
+	sym = parent->sym;
+	if (parent->list) {
+		if (sym && sym_is_choice(sym)) {
+			/* find the first choice value and find out choice type */
+			for (menu = parent->list; menu; menu = menu->next) {
+				if (menu->sym) {
+					current_entry = parent;
+					menu_set_type(menu->sym->type);
+					current_entry = menu;
+					menu_set_type(sym->type);
+					break;
+				}
+			}
+			parentdep = expr_alloc_symbol(sym);
+		} else if (parent->prompt)
+			parentdep = E_EXPR(parent->prompt->visible);
+		else
+			parentdep = parent->dep;
+
+		for (menu = parent->list; menu; menu = menu->next) {
+			basedep = expr_transform(menu->dep);
+			basedep = expr_alloc_and(expr_copy(parentdep), basedep);
+			basedep = expr_eliminate_dups(basedep);
+			menu->dep = basedep;
+			if (menu->sym)
+				prop = menu->sym->prop;
+			else
+				prop = menu->prompt;
+			for (; prop; prop = prop->next) {
+				if (prop->menu != menu)
+					continue;
+				dep = expr_transform(E_EXPR(prop->visible));
+				dep = expr_alloc_and(expr_copy(basedep), dep);
+				dep = expr_eliminate_dups(dep);
+				if (menu->sym && menu->sym->type != S_TRISTATE)
+					dep = expr_trans_bool(dep);
+				E_EXPR(prop->visible) = dep;
+			}
+		}
+		for (menu = parent->list; menu; menu = menu->next)
+			menu_finalize(menu);
+	} else if (sym && parent->prompt) {
+		basedep = E_EXPR(parent->prompt->visible);
+		basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
+		basedep = expr_eliminate_dups(expr_transform(basedep));
+		last_menu = NULL;
+		for (menu = parent->next; menu; menu = menu->next) {
+			dep = menu->prompt ? E_EXPR(menu->prompt->visible) : menu->dep;
+			if (!expr_contains_symbol(dep, sym))
+				break;
+			if (expr_depends_symbol(dep, sym))
+				goto next;
+			dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
+			dep = expr_eliminate_dups(expr_transform(dep));
+			dep2 = expr_copy(basedep);
+			expr_eliminate_eq(&dep, &dep2);
+			expr_free(dep);
+			if (!expr_is_yes(dep2)) {
+				expr_free(dep2);
+				break;
+			}
+			expr_free(dep2);
+		next:
+			menu_finalize(menu);
+			menu->parent = parent;
+			last_menu = menu;
+		}
+		if (last_menu) {
+			parent->list = parent->next;
+			parent->next = last_menu->next;
+			last_menu->next = NULL;
+		}
+	}
+	for (menu = parent->list; menu; menu = menu->next) {
+		if (sym && sym_is_choice(sym) && menu->sym) {
+			menu->sym->flags |= SYMBOL_CHOICEVAL;
+			current_entry = menu;
+			menu_set_type(sym->type);
+			menu_add_prop(P_CHOICE, NULL, parent->sym, NULL);
+			prop = sym_get_choice_prop(parent->sym);
+			//dep = expr_alloc_one(E_CHOICE, dep);
+			//dep->right.sym = menu->sym;
+			prop->dep = expr_alloc_one(E_CHOICE, prop->dep);
+			prop->dep->right.sym = menu->sym;
+		}
+		if (menu->list && (!menu->prompt || !menu->prompt->text)) {
+			for (last_menu = menu->list; ; last_menu = last_menu->next) {
+				last_menu->parent = parent;
+				if (!last_menu->next)
+					break;
+			}
+			last_menu->next = menu->next;
+			menu->next = menu->list;
+			menu->list = NULL;
+		}
+	}
+}
+
+bool menu_is_visible(struct menu *menu)
+{
+	tristate visible;
+
+	if (!menu->prompt)
+		return false;
+	if (menu->sym) {
+		sym_calc_value(menu->sym);
+		visible = E_TRI(menu->prompt->visible);
+	} else
+		visible = E_CALC(menu->prompt->visible);
+	return visible != no;
+}
+
+const char *menu_get_prompt(struct menu *menu)
+{
+	if (menu->prompt)
+		return menu->prompt->text;
+	else if (menu->sym)
+		return menu->sym->name;
+	return NULL;
+}
+
+struct menu *menu_get_root_menu(struct menu *menu)
+{
+	return &rootmenu;
+}
+
+struct menu *menu_get_parent_menu(struct menu *menu)
+{
+	enum prop_type type;
+
+	while (menu != &rootmenu) {
+		menu = menu->parent;
+		type = menu->prompt ? menu->prompt->type : 0;
+		if (type == P_MENU || type == P_ROOTMENU)
+			break;
+	}
+	return menu;
+}
+
+struct file *file_lookup(const char *name)
+{
+	struct file *file;
+
+	for (file = file_list; file; file = file->next) {
+		if (!strcmp(name, file->name))
+			return file;
+	}
+
+	file = malloc(sizeof(*file));
+	memset(file, 0, sizeof(*file));
+	file->name = strdup(name);
+	file->next = file_list;
+	file_list = file;
+	return file;
+}
+
+int file_write_dep(const char *name)
+{
+	struct file *file;
+	FILE *out;
+
+	if (!name)
+		name = "..config.cmd";
+	out = fopen("..config.tmp", "w");
+	if (!out)
+		return 1;
+	fprintf(out, "deps_config := \\\n");
+	for (file = file_list; file; file = file->next) {
+		if (file->next)
+			fprintf(out, "\t%s \\\n", file->name);
+		else
+			fprintf(out, "\t%s\n", file->name);
+	}
+	fprintf(out, "\n.config include/linux/autoconf.h: $(deps_config)\n\n$(deps_config):\n");
+	fclose(out);
+	rename("..config.tmp", name);
+	return 0;
+}
+
diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
new file mode 100644
index 000000000000..feefa1c7cf07
--- /dev/null
+++ b/scripts/kconfig/qconf.cc
@@ -0,0 +1,1073 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <qapplication.h>
+#include <qmainwindow.h>
+#include <qtoolbar.h>
+#include <qvbox.h>
+#include <qsplitter.h>
+#include <qlistview.h>
+#include <qtextview.h>
+#include <qlineedit.h>
+#include <qmenubar.h>
+#include <qmessagebox.h>
+#include <qaction.h>
+#include <qheader.h>
+#include <qfiledialog.h>
+#include <qregexp.h>
+#include <stdlib.h>
+
+#include "lkc.h"
+#include "qconf.h"
+
+#include "qconf.moc"
+#include "images.c"
+
+static QApplication *configApp;
+
+/*
+ * update all the children of a menu entry
+ *   removes/adds the entries from the parent widget as necessary
+ *
+ * parent: either the menu list widget or a menu entry widget
+ * menu: entry to be updated
+ */
+template <class P>
+static void updateMenuList(P* parent, struct menu* menu)
+{
+	struct menu* child;
+	ConfigList* list = parent->listView();
+	ConfigItem* item;
+	ConfigItem* last;
+	bool visible;
+	bool showAll = list->showAll;
+	enum listMode mode = list->mode;
+	enum prop_type type;
+
+	if (!menu) {
+		while ((item = parent->firstChild()))
+			delete item;
+		return;
+	}
+
+	last = 0;
+	for (child = menu->list; child; child = child->next) {
+		item = last ? last->nextSibling() : parent->firstChild();
+		type = child->prompt ? child->prompt->type : P_UNKNOWN;
+
+		switch (mode) {
+		case menuMode:
+			if (type != P_ROOTMENU)
+				goto hide;
+			break;
+		case symbolMode:
+			if (type == P_ROOTMENU)
+				goto hide;
+			break;
+		default:
+			break;
+		}
+
+		visible = menu_is_visible(child);
+		if (showAll || visible) {
+			if (!item || item->menu != child)
+				item = new ConfigItem(parent, last, child);
+			item->visible = visible;
+			item->updateMenu();
+
+			if (mode == fullMode || mode == menuMode ||
+			    (type != P_MENU && type != P_ROOTMENU))
+				updateMenuList(item, child);
+			else
+				updateMenuList(item, 0);
+			last = item;
+			continue;
+		}
+	hide:	
+		if (item && item->menu == child) {
+			last = parent->firstChild();
+			if (last == item)
+				last = 0;
+			else while (last->nextSibling() != item)
+				last = last->nextSibling();
+			delete item;
+		}
+	}
+}
+
+#if QT_VERSION >= 300
+/*
+ * set the new data
+ * TODO check the value
+ */
+void ConfigItem::okRename(int col)
+{
+	Parent::okRename(col);
+	sym_set_string_value(menu->sym, text(dataColIdx).latin1());
+}
+#endif
+
+/*
+ * update the displayed of a menu entry
+ */
+void ConfigItem::updateMenu(void)
+{
+	ConfigList* list;
+	struct symbol* sym;
+	QString prompt;
+	int type;
+	enum prop_type ptype;
+	tristate expr;
+	bool update;
+
+	list = listView();
+	update = doInit;
+	if (update)
+		doInit = false;
+	else
+		update = list->updateAll;
+
+	sym = menu->sym;
+	if (!sym) {
+		if (update) {
+			setText(promptColIdx, menu_get_prompt(menu));
+			ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
+			if ((ptype == P_ROOTMENU || ptype == P_MENU) &&
+			    (list->mode == singleMode || list->mode == symbolMode))
+				setPixmap(promptColIdx, list->menuPix);
+			else
+				setPixmap(promptColIdx, 0);
+		}
+		return;
+	}
+
+	sym_calc_value(sym);
+	if (!(sym->flags & SYMBOL_CHANGED) && !update)
+		return;
+
+	sym->flags &= ~SYMBOL_CHANGED;
+
+	setText(nameColIdx, menu->sym->name);
+
+	type = sym_get_type(sym);
+	switch (type) {
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		char ch;
+
+		prompt = menu_get_prompt(menu);
+		if (!sym_is_changable(sym) && !list->showAll) {
+			setText(noColIdx, 0);
+			setText(modColIdx, 0);
+			setText(yesColIdx, 0);
+			break;
+		}
+		expr = sym_get_tristate_value(sym);
+		switch (expr) {
+		case yes:
+			if (sym_is_choice_value(sym) && type == S_BOOLEAN)
+				setPixmap(promptColIdx, list->choiceYesPix);
+			else
+				setPixmap(promptColIdx, list->symbolYesPix);
+			setText(yesColIdx, "Y");
+			ch = 'Y';
+			break;
+		case mod:
+			setPixmap(promptColIdx, list->symbolModPix);
+			setText(modColIdx, "M");
+			ch = 'M';
+			break;
+		default:
+			if (sym_is_choice_value(sym) && type == S_BOOLEAN)
+				setPixmap(promptColIdx, list->choiceNoPix);
+			else
+				setPixmap(promptColIdx, list->symbolNoPix);
+			setText(noColIdx, "N");
+			ch = 'N';
+			break;
+		}
+		if (expr != no)
+			setText(noColIdx, sym_tristate_within_range(sym, no) ? "_" : 0);
+		if (expr != mod)
+			setText(modColIdx, sym_tristate_within_range(sym, mod) ? "_" : 0);
+		if (expr != yes)
+			setText(yesColIdx, sym_tristate_within_range(sym, yes) ? "_" : 0);
+
+		setText(dataColIdx, QChar(ch));
+		break;
+	case S_INT:
+	case S_HEX:
+	case S_STRING:
+		const char* data;
+
+		data = sym_get_string_value(sym);
+#if QT_VERSION >= 300
+		setRenameEnabled(list->mapIdx(dataColIdx), TRUE);
+#endif
+		setText(dataColIdx, data);
+		if (type == S_STRING)
+			prompt.sprintf("%s: %s", menu_get_prompt(menu), data);
+		else
+			prompt.sprintf("(%s) %s", data, menu_get_prompt(menu));
+		break;
+	}
+	if (!sym_has_value(sym) && visible)
+		prompt += " (NEW)";
+	setText(promptColIdx, prompt);
+}
+
+void ConfigItem::paintCell(QPainter* p, const QColorGroup& cg, int column, int width, int align)
+{
+	ConfigList* list = listView();
+
+	if (visible) {
+		if (isSelected() && !list->hasFocus() && list->mode == menuMode)
+			Parent::paintCell(p, list->inactivedColorGroup, column, width, align);
+		else
+			Parent::paintCell(p, cg, column, width, align);
+	} else
+		Parent::paintCell(p, list->disabledColorGroup, column, width, align);
+}
+
+/*
+ * construct a menu entry
+ */
+void ConfigItem::init(void)
+{
+	ConfigList* list = listView();
+#if QT_VERSION < 300
+	visible = TRUE;
+#endif
+	//menu->data = this;
+	if (list->mode != fullMode)
+		setOpen(TRUE);
+	doInit= true;
+}
+
+/*
+ * destruct a menu entry
+ */
+ConfigItem::~ConfigItem(void)
+{
+	//menu->data = 0;
+}
+
+void ConfigLineEdit::show(ConfigItem* i)
+{
+	item = i;
+	if (sym_get_string_value(item->menu->sym))
+		setText(sym_get_string_value(item->menu->sym));
+	else
+		setText(0);
+	Parent::show();
+	setFocus();
+}
+
+void ConfigLineEdit::keyPressEvent(QKeyEvent* e)
+{
+	switch (e->key()) {
+	case Key_Escape:
+		break;
+	case Key_Return:
+	case Key_Enter:
+		sym_set_string_value(item->menu->sym, text().latin1());
+		emit lineChanged(item);
+		break;
+	default:
+		Parent::keyPressEvent(e);
+		return;
+	}
+	e->accept();
+	hide();
+}
+
+ConfigList::ConfigList(QWidget* p, ConfigView* cv)
+	: Parent(p), cview(cv),
+	  updateAll(false),
+	  symbolYesPix(xpm_symbol_yes), symbolModPix(xpm_symbol_mod), symbolNoPix(xpm_symbol_no),
+	  choiceYesPix(xpm_choice_yes), choiceNoPix(xpm_choice_no), menuPix(xpm_menu), menuInvPix(xpm_menu_inv),
+	  showAll(false), showName(false), showRange(false), showData(false),
+	  rootEntry(0)
+{
+	int i;
+
+	setSorting(-1);
+	setRootIsDecorated(TRUE);
+	disabledColorGroup = palette().active();
+	disabledColorGroup.setColor(QColorGroup::Text, palette().disabled().text());
+	inactivedColorGroup = palette().active();
+	inactivedColorGroup.setColor(QColorGroup::Highlight, palette().disabled().highlight());
+
+	connect(this, SIGNAL(selectionChanged(void)),
+		SLOT(updateSelection(void)));
+
+	for (i = 0; i < colNr; i++)
+		colMap[i] = colRevMap[i] = -1;
+	addColumn(promptColIdx, "Option");
+
+	reinit();
+}
+
+void ConfigList::reinit(void)
+{
+	removeColumn(dataColIdx);
+	removeColumn(yesColIdx);
+	removeColumn(modColIdx);
+	removeColumn(noColIdx);
+	removeColumn(nameColIdx);
+
+	if (showName)
+		addColumn(nameColIdx, "Name");
+	if (showRange) {
+		addColumn(noColIdx, "N");
+		addColumn(modColIdx, "M");
+		addColumn(yesColIdx, "Y");
+	}
+	if (showData)
+		addColumn(dataColIdx, "Value");
+
+	updateListAll();
+}
+
+void ConfigList::updateSelection(void)
+{
+	struct menu *menu;
+	enum prop_type type;
+
+	ConfigItem* item = (ConfigItem*)selectedItem();
+	if (!item)
+		return;
+
+	cview->setHelp(item);
+
+	menu = item->menu;
+	type = menu->prompt ? menu->prompt->type : P_UNKNOWN;
+	if (mode == menuMode && (type == P_MENU || type == P_ROOTMENU))
+		emit menuSelected(menu);
+}
+
+void ConfigList::updateList(ConfigItem* item)
+{
+	(void)item;	// unused so far
+	updateMenuList(this, rootEntry);
+}
+
+void ConfigList::setAllOpen(bool open)
+{
+	QListViewItemIterator it(this);
+
+	for (; it.current(); it++)
+		it.current()->setOpen(open);
+}
+
+void ConfigList::setValue(ConfigItem* item, tristate val)
+{
+	struct symbol* sym;
+	int type;
+	tristate oldval;
+
+	sym = item->menu->sym;
+	if (!sym)
+		return;
+
+	type = sym_get_type(sym);
+	switch (type) {
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		oldval = sym_get_tristate_value(sym);
+
+		if (!sym_set_tristate_value(sym, val))
+			return;
+		if (oldval == no && item->menu->list)
+			item->setOpen(TRUE);
+		emit symbolChanged(item);
+		break;
+	}
+}
+
+void ConfigList::changeValue(ConfigItem* item)
+{
+	struct symbol* sym;
+	struct menu* menu;
+	int type, oldexpr, newexpr;
+
+	menu = item->menu;
+	sym = menu->sym;
+	if (!sym) {
+		if (item->menu->list)
+			item->setOpen(!item->isOpen());
+		return;
+	}
+
+	type = sym_get_type(sym);
+	switch (type) {
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		oldexpr = sym_get_tristate_value(sym);
+		newexpr = sym_toggle_tristate_value(sym);
+		if (item->menu->list) {
+			if (oldexpr == newexpr)
+				item->setOpen(!item->isOpen());
+			else if (oldexpr == no)
+				item->setOpen(TRUE);
+		}
+		if (oldexpr != newexpr)
+			emit symbolChanged(item);
+		break;
+	case S_INT:
+	case S_HEX:
+	case S_STRING:
+#if QT_VERSION >= 300
+		if (colMap[dataColIdx] >= 0)
+			item->startRename(colMap[dataColIdx]);
+		else
+#endif
+			lineEdit->show(item);
+		break;
+	}
+}
+
+void ConfigList::setRootMenu(struct menu *menu)
+{
+	enum prop_type type;
+
+	if (rootEntry == menu)
+		return;
+	type = menu && menu->prompt ? menu->prompt->type : P_UNKNOWN;
+	if (type != P_MENU && type != P_ROOTMENU)
+		return;
+	updateMenuList(this, 0);
+	rootEntry = menu;
+	updateListAll();
+	setSelected(currentItem(), hasFocus());
+}
+
+void ConfigList::setParentMenu(void)
+{
+	ConfigItem* item;
+	struct menu *oldroot, *newroot;
+
+	oldroot = rootEntry;
+	newroot = menu_get_parent_menu(oldroot);
+	if (newroot == oldroot)
+		return;
+	setRootMenu(newroot);
+
+	QListViewItemIterator it(this);
+	for (; (item = (ConfigItem*)it.current()); it++) {
+		if (item->menu == oldroot) {
+			setCurrentItem(item);
+			ensureItemVisible(item);
+			break;
+		}
+	}
+}
+
+void ConfigList::keyPressEvent(QKeyEvent* ev)
+{
+	QListViewItem* i = currentItem();
+	ConfigItem* item;
+	struct menu *menu;
+	enum prop_type type;
+
+	if (ev->key() == Key_Escape && mode != fullMode) {
+		emit parentSelected();
+		ev->accept();
+		return;
+	}
+
+	if (!i) {
+		Parent::keyPressEvent(ev);
+		return;
+	}
+	item = (ConfigItem*)i;
+
+	switch (ev->key()) {
+	case Key_Return:
+	case Key_Enter:
+		menu = item->menu;
+		type = menu->prompt ? menu->prompt->type : P_UNKNOWN;
+		if ((type == P_MENU || type == P_ROOTMENU) && mode != fullMode) {
+			emit menuSelected(menu);
+			break;
+		}
+	case Key_Space:
+		changeValue(item);
+		break;
+	case Key_N:
+		setValue(item, no);
+		break;
+	case Key_M:
+		setValue(item, mod);
+		break;
+	case Key_Y:
+		setValue(item, yes);
+		break;
+	default:
+		Parent::keyPressEvent(ev);
+		return;
+	}
+	ev->accept();
+}
+
+void ConfigList::contentsMousePressEvent(QMouseEvent* e)
+{
+	//QPoint p(contentsToViewport(e->pos()));
+	//printf("contentsMousePressEvent: %d,%d\n", p.x(), p.y());
+	QListView::contentsMousePressEvent(e);
+}
+
+void ConfigList::contentsMouseReleaseEvent(QMouseEvent* e)
+{
+	QPoint p(contentsToViewport(e->pos()));
+	ConfigItem* item = (ConfigItem*)itemAt(p);
+	struct menu *menu;
+	const QPixmap* pm;
+	int idx, x;
+
+	if (!item)
+		goto skip;
+
+	menu = item->menu;
+	x = header()->offset() + p.x();
+	idx = colRevMap[header()->sectionAt(x)];
+	switch (idx) {
+	case promptColIdx:
+		pm = item->pixmap(promptColIdx);
+		if (pm) {
+			int off = header()->sectionPos(0) + itemMargin() +
+				treeStepSize() * (item->depth() + (rootIsDecorated() ? 1 : 0));
+			if (x >= off && x < off + pm->width()) {
+				if (menu->sym)
+					changeValue(item);
+				else
+					emit menuSelected(menu);
+			}
+		}
+		break;
+	case noColIdx:
+		setValue(item, no);
+		break;
+	case modColIdx:
+		setValue(item, mod);
+		break;
+	case yesColIdx:
+		setValue(item, yes);
+		break;
+	case dataColIdx:
+		changeValue(item);
+		break;
+	}
+
+skip:
+	//printf("contentsMouseReleaseEvent: %d,%d\n", p.x(), p.y());
+	QListView::contentsMouseReleaseEvent(e);
+}
+
+void ConfigList::contentsMouseMoveEvent(QMouseEvent* e)
+{
+	//QPoint p(contentsToViewport(e->pos()));
+	//printf("contentsMouseMoveEvent: %d,%d\n", p.x(), p.y());
+	QListView::contentsMouseMoveEvent(e);
+}
+
+void ConfigList::contentsMouseDoubleClickEvent(QMouseEvent* e)
+{
+	QPoint p(contentsToViewport(e->pos()));
+	ConfigItem* item = (ConfigItem*)itemAt(p);
+	struct menu *menu;
+	enum prop_type ptype;
+
+	if (!item)
+		goto skip;
+	menu = item->menu;
+	ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
+	if ((ptype == P_ROOTMENU || ptype == P_MENU) &&
+	    (mode == singleMode || mode == symbolMode))
+		emit menuSelected(menu);
+
+skip:
+	//printf("contentsMouseDoubleClickEvent: %d,%d\n", p.x(), p.y());
+	QListView::contentsMouseDoubleClickEvent(e);
+}
+
+void ConfigList::focusInEvent(QFocusEvent *e)
+{
+	Parent::focusInEvent(e);
+
+	QListViewItem* item = currentItem();
+	if (!item)
+		return;
+
+	setSelected(item, TRUE);
+	emit gotFocus();
+}
+
+/*
+ * Construct the complete config widget
+ */
+ConfigView::ConfigView(void)
+{
+	QMenuBar* menu;
+	QSplitter* split1;
+	QSplitter* split2;
+
+	showDebug = false;
+
+	split1 = new QSplitter(this);
+	split1->setOrientation(QSplitter::Horizontal);
+	setCentralWidget(split1);
+
+	menuList = new ConfigList(split1, this);
+
+	split2 = new QSplitter(split1);
+	split2->setOrientation(QSplitter::Vertical);
+
+	// create config tree
+	QVBox* box = new QVBox(split2);
+	configList = new ConfigList(box, this);
+	configList->lineEdit = new ConfigLineEdit(box);
+	configList->lineEdit->hide();
+	configList->connect(configList, SIGNAL(symbolChanged(ConfigItem*)),
+			    configList, SLOT(updateList(ConfigItem*)));
+	configList->connect(configList, SIGNAL(symbolChanged(ConfigItem*)),
+			    menuList, SLOT(updateList(ConfigItem*)));
+	configList->connect(configList->lineEdit, SIGNAL(lineChanged(ConfigItem*)),
+			    SLOT(updateList(ConfigItem*)));
+
+	helpText = new QTextView(split2);
+	helpText->setTextFormat(Qt::RichText);
+
+	setTabOrder(configList, helpText);
+	configList->setFocus();
+
+	menu = menuBar();
+	toolBar = new QToolBar("Tools", this);
+
+	backAction = new QAction("Back", QPixmap(xpm_back), "Back", 0, this);
+	  connect(backAction, SIGNAL(activated()), SLOT(goBack()));
+	  backAction->setEnabled(FALSE);
+	QAction *quitAction = new QAction("Quit", "&Quit", CTRL+Key_Q, this);
+	  connect(quitAction, SIGNAL(activated()), SLOT(close()));
+	QAction *loadAction = new QAction("Load", QPixmap(xpm_load), "&Load", CTRL+Key_L, this);
+	  connect(loadAction, SIGNAL(activated()), SLOT(loadConfig()));
+	QAction *saveAction = new QAction("Save", QPixmap(xpm_save), "&Save", CTRL+Key_S, this);
+	  connect(saveAction, SIGNAL(activated()), SLOT(saveConfig()));
+	QAction *saveAsAction = new QAction("Save As...", "Save &As...", 0, this);
+	  connect(saveAsAction, SIGNAL(activated()), SLOT(saveConfigAs()));
+	QAction *singleViewAction = new QAction("Single View", QPixmap(xpm_single_view), "Split View", 0, this);
+	  connect(singleViewAction, SIGNAL(activated()), SLOT(showSingleView()));
+	QAction *splitViewAction = new QAction("Split View", QPixmap(xpm_split_view), "Split View", 0, this);
+	  connect(splitViewAction, SIGNAL(activated()), SLOT(showSplitView()));
+	QAction *fullViewAction = new QAction("Full View", QPixmap(xpm_tree_view), "Full View", 0, this);
+	  connect(fullViewAction, SIGNAL(activated()), SLOT(showFullView()));
+
+	QAction *showNameAction = new QAction(NULL, "Show Name", 0, this);
+	  showNameAction->setToggleAction(TRUE);
+	  showNameAction->setOn(configList->showName);
+	  connect(showNameAction, SIGNAL(toggled(bool)), SLOT(setShowName(bool)));
+	QAction *showRangeAction = new QAction(NULL, "Show Range", 0, this);
+	  showRangeAction->setToggleAction(TRUE);
+	  showRangeAction->setOn(configList->showRange);
+	  connect(showRangeAction, SIGNAL(toggled(bool)), SLOT(setShowRange(bool)));
+	QAction *showDataAction = new QAction(NULL, "Show Data", 0, this);
+	  showDataAction->setToggleAction(TRUE);
+	  showDataAction->setOn(configList->showData);
+	  connect(showDataAction, SIGNAL(toggled(bool)), SLOT(setShowData(bool)));
+	QAction *showAllAction = new QAction(NULL, "Show All Options", 0, this);
+	  showAllAction->setToggleAction(TRUE);
+	  showAllAction->setOn(configList->showAll);
+	  connect(showAllAction, SIGNAL(toggled(bool)), SLOT(setShowAll(bool)));
+	QAction *showDebugAction = new QAction(NULL, "Show Debug Info", 0, this);
+	  showDebugAction->setToggleAction(TRUE);
+	  showDebugAction->setOn(showDebug);
+	  connect(showDebugAction, SIGNAL(toggled(bool)), SLOT(setShowDebug(bool)));
+
+	// init tool bar
+	backAction->addTo(toolBar);
+	toolBar->addSeparator();
+	loadAction->addTo(toolBar);
+	saveAction->addTo(toolBar);
+	toolBar->addSeparator();
+	singleViewAction->addTo(toolBar);
+	splitViewAction->addTo(toolBar);
+	fullViewAction->addTo(toolBar);
+
+	// create config menu
+	QPopupMenu* config = new QPopupMenu(this);
+	menu->insertItem("&File", config);
+	loadAction->addTo(config);
+	saveAction->addTo(config);
+	saveAsAction->addTo(config);
+	config->insertSeparator();
+	quitAction->addTo(config);
+
+	// create options menu
+	QPopupMenu* optionMenu = new QPopupMenu(this);
+	menu->insertItem("&Option", optionMenu);
+	showNameAction->addTo(optionMenu);
+	showRangeAction->addTo(optionMenu);
+	showDataAction->addTo(optionMenu);
+	optionMenu->insertSeparator();
+	showAllAction->addTo(optionMenu);
+	showDebugAction->addTo(optionMenu);
+
+	connect(configList, SIGNAL(menuSelected(struct menu *)),
+		SLOT(changeMenu(struct menu *)));
+	connect(configList, SIGNAL(parentSelected()),
+		SLOT(goBack()));
+	connect(menuList, SIGNAL(menuSelected(struct menu *)),
+		SLOT(changeMenu(struct menu *)));
+
+	connect(configList, SIGNAL(gotFocus(void)),
+		SLOT(listFocusChanged(void)));
+	connect(menuList, SIGNAL(gotFocus(void)),
+		SLOT(listFocusChanged(void)));
+
+	//showFullView();
+	showSplitView();
+}
+
+static QString print_filter(const char *str)
+{
+	QRegExp re("[<>&\"\\n]");
+	QString res = str;
+	for (int i = 0; (i = res.find(re, i)) >= 0;) {
+		switch (res[i].latin1()) {
+		case '<':
+			res.replace(i, 1, "&lt;");
+			i += 4;
+			break;
+		case '>':
+			res.replace(i, 1, "&gt;");
+			i += 4;
+			break;
+		case '&':
+			res.replace(i, 1, "&amp;");
+			i += 5;
+			break;
+		case '"':
+			res.replace(i, 1, "&quot;");
+			i += 6;
+			break;
+		case '\n':
+			res.replace(i, 1, "<br>");
+			i += 4;
+			break;
+		}
+	}
+	return res;
+}
+
+static void expr_print_help(void *data, const char *str)
+{
+	((QString*)data)->append(print_filter(str));
+}
+
+/*
+ * display a new help entry as soon as a new menu entry is selected
+ */
+void ConfigView::setHelp(QListViewItem* item)
+{
+	struct symbol* sym;
+	struct menu* menu;
+
+	configList->lineEdit->hide();
+	if (item) {
+		QString head, debug, help;
+		menu = ((ConfigItem*)item)->menu;
+		sym = menu->sym;
+		if (sym) {
+			if (menu->prompt) {
+				head += "<big><b>";
+				head += print_filter(menu->prompt->text);
+				head += "</b></big>";
+				if (sym->name) {
+					head += " (";
+					head += print_filter(sym->name);
+					head += ")";
+				}
+			} else if (sym->name) {
+				head += "<big><b>";
+				head += print_filter(sym->name);
+				head += "</b></big>";
+			}
+			head += "<br><br>";
+
+			if (showDebug) {
+				debug += "type: ";
+				debug += print_filter(sym_type_name(sym->type));
+				debug += "<br>";
+				for (struct property *prop = sym->prop; prop; prop = prop->next) {
+					switch (prop->type) {
+					case P_PROMPT:
+						debug += "prompt: ";
+						debug += print_filter(prop->text);
+						debug += "<br>";
+						if (prop->visible.expr) {
+							debug += "&nbsp;&nbsp;dep: ";
+							expr_print(prop->visible.expr, expr_print_help, &debug, E_NONE);
+							debug += "<br>";
+						}
+						break;
+					case P_DEFAULT:
+						debug += "default: ";
+						if (sym_is_choice(sym))
+							debug += print_filter(prop->def->name);
+						else {
+							sym_calc_value(prop->def);
+							debug += print_filter(sym_get_string_value(prop->def));
+						}
+						debug += "<br>";
+						if (prop->visible.expr) {
+							debug += "&nbsp;&nbsp;dep: ";
+							expr_print(prop->visible.expr, expr_print_help, &debug, E_NONE);
+							debug += "<br>";
+						}
+						break;
+					case P_CHOICE:
+						break;
+					default:
+						debug += "unknown property: ";
+						debug += prop_get_type_name(prop->type);
+						debug += "<br>";
+					}
+				}
+				debug += "<br>";
+			}
+
+			help = print_filter(sym->help);
+		} else if (menu->prompt) {
+			head += "<big><b>";
+			head += print_filter(menu->prompt->text);
+			head += "</b></big><br><br>";
+			if (showDebug) {
+				if (menu->prompt->visible.expr) {
+					debug += "&nbsp;&nbsp;dep: ";
+					expr_print(menu->prompt->visible.expr, expr_print_help, &debug, E_NONE);
+					debug += "<br>";
+				}
+			}
+		}
+		helpText->setText(head + debug + help);
+		return;
+	}
+	helpText->setText(NULL);
+}
+
+void ConfigView::loadConfig(void)
+{
+	QString s = QFileDialog::getOpenFileName(".config", NULL, this);
+	if (s.isNull())
+		return;
+	if (conf_read(s.latin1()))
+		QMessageBox::information(this, "qconf", "Unable to load configuration!");
+}
+
+void ConfigView::saveConfig(void)
+{
+	if (conf_write(NULL))
+		QMessageBox::information(this, "qconf", "Unable to save configuration!");
+}
+
+void ConfigView::saveConfigAs(void)
+{
+	QString s = QFileDialog::getSaveFileName(".config", NULL, this);
+	if (s.isNull())
+		return;
+	if (conf_write(s.latin1()))
+		QMessageBox::information(this, "qconf", "Unable to save configuration!");
+}
+
+void ConfigView::changeMenu(struct menu *menu)
+{
+	configList->setRootMenu(menu);
+	backAction->setEnabled(TRUE);
+}
+
+void ConfigView::listFocusChanged(void)
+{
+	if (menuList->hasFocus()) {
+		if (menuList->mode == menuMode)
+			configList->clearSelection();
+		setHelp(menuList->selectedItem());
+	} else if (configList->hasFocus()) {
+		setHelp(configList->selectedItem());
+	}
+}
+
+void ConfigView::goBack(void)
+{
+	ConfigItem* item;
+
+	configList->setParentMenu();
+	if (configList->rootEntry == &rootmenu)
+		backAction->setEnabled(FALSE);
+	item = (ConfigItem*)menuList->selectedItem();
+	while (item) {
+		if (item->menu == configList->rootEntry) {
+			menuList->setSelected(item, TRUE);
+			break;
+		}
+		item = (ConfigItem*)item->parent();
+	}
+}
+
+void ConfigView::showSingleView(void)
+{
+	menuList->hide();
+	menuList->setRootMenu(0);
+	configList->mode = singleMode;
+	if (configList->rootEntry == &rootmenu)
+		configList->updateListAll();
+	else
+		configList->setRootMenu(&rootmenu);
+	configList->setAllOpen(TRUE);
+	configList->setFocus();
+}
+
+void ConfigView::showSplitView(void)
+{
+	configList->mode = symbolMode;
+	if (configList->rootEntry == &rootmenu)
+		configList->updateListAll();
+	else
+		configList->setRootMenu(&rootmenu);
+	configList->setAllOpen(TRUE);
+	configApp->processEvents();
+	menuList->mode = menuMode;
+	menuList->setRootMenu(&rootmenu);
+	menuList->show();
+	menuList->setAllOpen(TRUE);
+	menuList->setFocus();
+}
+
+void ConfigView::showFullView(void)
+{
+	menuList->hide();
+	menuList->setRootMenu(0);
+	configList->mode = fullMode;
+	if (configList->rootEntry == &rootmenu)
+		configList->updateListAll();
+	else
+		configList->setRootMenu(&rootmenu);
+	configList->setAllOpen(FALSE);
+	configList->setFocus();
+}
+
+void ConfigView::setShowAll(bool b)
+{
+	if (configList->showAll == b)
+		return;
+	configList->showAll = b;
+	configList->updateListAll();
+	menuList->showAll = b;
+	menuList->updateListAll();
+}
+
+void ConfigView::setShowDebug(bool b)
+{
+	if (showDebug == b)
+		return;
+	showDebug = b;
+}
+
+void ConfigView::setShowName(bool b)
+{
+	if (configList->showName == b)
+		return;
+	configList->showName = b;
+	configList->reinit();
+}
+
+void ConfigView::setShowRange(bool b)
+{
+	if (configList->showRange == b)
+		return;
+	configList->showRange = b;
+	configList->reinit();
+}
+
+void ConfigView::setShowData(bool b)
+{
+	if (configList->showData == b)
+		return;
+	configList->showData = b;
+	configList->reinit();
+}
+
+/*
+ * ask for saving configuration before quitting
+ * TODO ask only when something changed
+ */
+void ConfigView::closeEvent(QCloseEvent* e)
+{
+	if (!sym_change_count) {
+		e->accept();
+		return;
+	}
+	QMessageBox mb("qconf", "Save configuration?", QMessageBox::Warning,
+			QMessageBox::Yes | QMessageBox::Default, QMessageBox::No, QMessageBox::Cancel | QMessageBox::Escape);
+	mb.setButtonText(QMessageBox::Yes, "&Save Changes");
+	mb.setButtonText(QMessageBox::No, "&Discard Changes");
+	mb.setButtonText(QMessageBox::Cancel, "Cancel Exit");
+	switch (mb.exec()) {
+	case QMessageBox::Yes:
+		conf_write(NULL);
+	case QMessageBox::No:
+		e->accept();
+		break;
+	case QMessageBox::Cancel:
+		e->ignore();
+		break;
+	}
+}
+
+void fixup_rootmenu(struct menu *menu)
+{
+	struct menu *child;
+
+	if (!menu->prompt || menu->prompt->type != P_MENU)
+		return;
+	menu->prompt->type = P_ROOTMENU;
+	for (child = menu->list; child; child = child->next)
+		fixup_rootmenu(child);
+}
+
+int main(int ac, char** av)
+{
+	ConfigView* v;
+	const char *name;
+
+#ifndef LKC_DIRECT_LINK
+	kconfig_load();
+#endif
+
+	configApp = new QApplication(ac, av);
+	if (ac > 1 && av[1][0] == '-') {
+		switch (av[1][1]) {
+		case 'a':
+			//showAll = 1;
+			break;
+		case 'h':
+		case '?':
+			printf("%s <config>\n", av[0]);
+			exit(0);
+		}
+		name = av[2];
+	} else
+		name = av[1];
+	conf_parse(name);
+	fixup_rootmenu(&rootmenu);
+	conf_read(NULL);
+	//zconfdump(stdout);
+	v = new ConfigView();
+
+	//zconfdump(stdout);
+	v->show();
+	configApp->connect(configApp, SIGNAL(lastWindowClosed()), SLOT(quit()));
+	configApp->exec();
+	return 0;
+}
diff --git a/scripts/kconfig/qconf.h b/scripts/kconfig/qconf.h
new file mode 100644
index 000000000000..f8f36693999d
--- /dev/null
+++ b/scripts/kconfig/qconf.h
@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <qlistview.h>
+
+class ConfigLineEdit;
+class ConfigItem;
+class ConfigView;
+
+enum colIdx {
+	promptColIdx, nameColIdx, noColIdx, modColIdx, yesColIdx, dataColIdx, colNr
+};
+enum listMode {
+	singleMode, menuMode, symbolMode, fullMode
+};
+
+class ConfigList : public QListView {
+	Q_OBJECT
+	typedef class QListView Parent;
+public:
+	ConfigList(QWidget* p, ConfigView* cview);
+	void reinit(void);
+
+	ConfigLineEdit* lineEdit;
+protected:
+	ConfigView* cview;
+
+	void keyPressEvent(QKeyEvent *e);
+	void contentsMousePressEvent(QMouseEvent *e);
+	void contentsMouseReleaseEvent(QMouseEvent *e);
+	void contentsMouseMoveEvent(QMouseEvent *e);
+	void contentsMouseDoubleClickEvent(QMouseEvent *e);
+	void focusInEvent(QFocusEvent *e);
+public slots:
+	void setRootMenu(struct menu *menu);
+
+	void updateList(ConfigItem *item);
+	void setValue(ConfigItem* item, tristate val);
+	void changeValue(ConfigItem* item);
+	void updateSelection(void);
+signals:
+	void menuSelected(struct menu *menu);
+	void parentSelected(void);
+	void symbolChanged(ConfigItem* item);
+	void gotFocus(void);
+
+public:
+	void updateListAll(void)
+	{
+		updateAll = true;
+		updateList(NULL);
+		updateAll = false;
+	}
+	ConfigList* listView()
+	{
+		return this;
+	}
+	ConfigItem* firstChild() const
+	{
+		return (ConfigItem *)Parent::firstChild();
+	}
+	int mapIdx(colIdx idx)
+	{
+		return colMap[idx];
+	}
+	void addColumn(colIdx idx, const QString& label)
+	{
+		colMap[idx] = Parent::addColumn(label);
+		colRevMap[colMap[idx]] = idx;
+	}
+	void removeColumn(colIdx idx)
+	{
+		int col = colMap[idx];
+		if (col >= 0) {
+			Parent::removeColumn(col);
+			colRevMap[col] = colMap[idx] = -1;
+		}
+	}
+	void setAllOpen(bool open);
+	void setParentMenu(void);
+
+	bool updateAll;
+
+	QPixmap symbolYesPix, symbolModPix, symbolNoPix;
+	QPixmap choiceYesPix, choiceNoPix, menuPix, menuInvPix;
+
+	bool showAll, showName, showRange, showData;
+	enum listMode mode;
+	struct menu *rootEntry;
+	QColorGroup disabledColorGroup;
+	QColorGroup inactivedColorGroup;
+
+private:
+	int colMap[colNr];
+	int colRevMap[colNr];
+};
+
+class ConfigItem : public QListViewItem {
+	typedef class QListViewItem Parent;
+public:
+	ConfigItem(QListView *parent, ConfigItem *after, struct menu *m)
+	: Parent(parent, after), menu(m)
+	{
+		init();
+	}
+	ConfigItem(ConfigItem *parent, ConfigItem *after, struct menu *m)
+	: Parent(parent, after), menu(m)
+	{
+		init();
+	}
+	~ConfigItem(void);
+	void init(void);
+#if QT_VERSION >= 300
+	void okRename(int col);
+#endif
+	void updateMenu(void);
+	ConfigList* listView() const
+	{
+		return (ConfigList*)Parent::listView();
+	}
+	ConfigItem* firstChild() const
+	{
+		return (ConfigItem *)Parent::firstChild();
+	}
+	ConfigItem* nextSibling() const
+	{
+		return (ConfigItem *)Parent::nextSibling();
+	}
+	void setText(colIdx idx, const QString& text)
+	{
+		Parent::setText(listView()->mapIdx(idx), text);
+	}
+	QString text(colIdx idx) const
+	{
+		return Parent::text(listView()->mapIdx(idx));
+	}
+	void setPixmap(colIdx idx, const QPixmap& pm)
+	{
+		Parent::setPixmap(listView()->mapIdx(idx), pm);
+	}
+	const QPixmap* pixmap(colIdx idx) const
+	{
+		return Parent::pixmap(listView()->mapIdx(idx));
+	}
+	void paintCell(QPainter* p, const QColorGroup& cg, int column, int width, int align);
+
+	struct menu *menu;
+	bool visible;
+	bool doInit;
+};
+
+class ConfigLineEdit : public QLineEdit {
+	Q_OBJECT
+	typedef class QLineEdit Parent;
+public:
+	ConfigLineEdit(QWidget * parent)
+	: QLineEdit(parent)
+	{ }
+	void show(ConfigItem *i);
+	void keyPressEvent(QKeyEvent *e);
+signals:
+	void lineChanged(ConfigItem *item);
+
+public:
+	ConfigItem *item;
+};
+
+class ConfigView : public QMainWindow {
+	Q_OBJECT
+public:
+	ConfigView(void);
+public slots:
+	void setHelp(QListViewItem* item);
+	void changeMenu(struct menu *);
+	void listFocusChanged(void);
+	void goBack(void);
+	void loadConfig(void);
+	void saveConfig(void);
+	void saveConfigAs(void);
+	void showSingleView(void);
+	void showSplitView(void);
+	void showFullView(void);
+	void setShowAll(bool);
+	void setShowDebug(bool);
+	void setShowRange(bool);
+	void setShowName(bool);
+	void setShowData(bool);
+
+protected:
+	void closeEvent(QCloseEvent *e);
+
+	ConfigList *menuList;
+	ConfigList *configList;
+	QTextView *helpText;
+	QToolBar *toolBar;
+	QAction *backAction;
+
+	bool showDebug;
+};
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
new file mode 100644
index 000000000000..59c88d253bb7
--- /dev/null
+++ b/scripts/kconfig/symbol.c
@@ -0,0 +1,618 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/utsname.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+struct symbol symbol_yes = {
+	name: "y",
+	curr: { "y", yes },
+	flags: SYMBOL_YES|SYMBOL_VALID,
+}, symbol_mod = {
+	name: "m",
+	curr: { "m", mod },
+	flags: SYMBOL_MOD|SYMBOL_VALID,
+}, symbol_no = {
+	name: "n",
+	curr: { "n", no },
+	flags: SYMBOL_NO|SYMBOL_VALID,
+}, symbol_empty = {
+	name: "",
+	curr: { "", no },
+	flags: SYMBOL_VALID,
+};
+
+int sym_change_count;
+struct symbol *modules_sym;
+
+void sym_add_default(struct symbol *sym, const char *def)
+{
+	struct property *prop = create_prop(P_DEFAULT);
+	struct property **propp;
+
+	prop->sym = sym;
+	prop->def = sym_lookup(def, 1);
+
+	/* append property to the prop list of symbol */
+	if (prop->sym) {
+		for (propp = &prop->sym->prop; *propp; propp = &(*propp)->next)
+			;
+		*propp = prop;
+	}
+}
+
+void sym_init(void)
+{
+	struct symbol *sym;
+	struct utsname uts;
+	char *p;
+	static bool inited = false;
+
+	if (inited)
+		return;
+	inited = true;
+
+	uname(&uts);
+
+	sym = sym_lookup("ARCH", 0);
+	sym->type = S_STRING;
+	sym->flags |= SYMBOL_AUTO;
+	p = getenv("ARCH");
+	if (p)
+		sym_add_default(sym, p);
+
+	sym = sym_lookup("KERNELRELEASE", 0);
+	sym->type = S_STRING;
+	sym->flags |= SYMBOL_AUTO;
+	p = getenv("KERNELRELEASE");
+	if (p)
+		sym_add_default(sym, p);
+
+	sym = sym_lookup("UNAME_RELEASE", 0);
+	sym->type = S_STRING;
+	sym->flags |= SYMBOL_AUTO;
+	sym_add_default(sym, uts.release);
+}
+
+int sym_get_type(struct symbol *sym)
+{
+	int type = sym->type;
+	if (type == S_TRISTATE) {
+		if (sym_is_choice_value(sym) && sym->visible == yes)
+			type = S_BOOLEAN;
+		else {
+			sym_calc_value(modules_sym);
+			if (S_TRI(modules_sym->curr) == no)
+				type = S_BOOLEAN;
+		}
+	}
+	return type;
+}
+
+const char *sym_type_name(int type)
+{
+	switch (type) {
+	case S_BOOLEAN:
+		return "boolean";
+	case S_TRISTATE:
+		return "tristate";
+	case S_INT:
+		return "integer";
+	case S_HEX:
+		return "hex";
+	case S_STRING:
+		return "string";
+	case S_UNKNOWN:
+		return "unknown";
+	}
+	return "???";
+}
+
+struct property *sym_get_choice_prop(struct symbol *sym)
+{
+	struct property *prop;
+
+	for_all_choices(sym, prop)
+		return prop;
+	return NULL;
+}
+
+struct property *sym_get_default_prop(struct symbol *sym)
+{
+	struct property *prop;
+	tristate visible;
+
+	for_all_defaults(sym, prop) {
+		visible = E_CALC(prop->visible);
+		if (visible != no)
+			return prop;
+	}
+	return NULL;
+}
+
+void sym_calc_visibility(struct symbol *sym)
+{
+	struct property *prop;
+	tristate visible, oldvisible;
+
+	/* any prompt visible? */
+	oldvisible = sym->visible;
+	visible = no;
+	for_all_prompts(sym, prop)
+		visible = E_OR(visible, E_CALC(prop->visible));
+	if (oldvisible != visible) {
+		sym->visible = visible;
+		sym->flags |= SYMBOL_CHANGED;
+	}
+}
+
+void sym_calc_value(struct symbol *sym)
+{
+	struct symbol_value newval, oldval;
+	struct property *prop, *def_prop;
+	struct symbol *def_sym;
+	struct expr *e;
+
+	if (sym->flags & SYMBOL_VALID)
+		return;
+
+	oldval = sym->curr;
+
+	switch (sym->type) {
+	case S_INT:
+	case S_HEX:
+	case S_STRING:
+		newval = symbol_empty.curr;
+		break;
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		newval = symbol_no.curr;
+		break;
+	default:
+		S_VAL(newval) = sym->name;
+		S_TRI(newval) = no;
+		if (sym->flags & SYMBOL_CONST) {
+			goto out;
+		}
+		//newval = symbol_empty.curr;
+		// generate warning somewhere here later
+		//S_TRI(newval) = yes;
+		goto out;
+	}
+	sym->flags |= SYMBOL_VALID;
+	if (!sym_is_choice_value(sym))
+		sym->flags &= ~SYMBOL_WRITE;
+
+	sym_calc_visibility(sym);
+
+	/* set default if recursively called */
+	sym->curr = newval;
+
+	if (sym->visible != no) {
+		sym->flags |= SYMBOL_WRITE;
+		if (!sym_has_value(sym)) {
+			if (!sym_is_choice(sym)) {
+				prop = sym_get_default_prop(sym);
+				if (prop) {
+					sym_calc_value(prop->def);
+					newval = prop->def->curr;
+				}
+			}
+		} else
+			newval = sym->def;
+
+		S_TRI(newval) = E_AND(S_TRI(newval), sym->visible);
+		/* if the symbol is visible and not optionial,
+		 * possibly ignore old user choice. */
+		if (!sym_is_optional(sym) && S_TRI(newval) == no)
+			S_TRI(newval) = sym->visible;
+		if (sym_is_choice_value(sym) && sym->visible == yes) {
+			prop = sym_get_choice_prop(sym);
+			S_TRI(newval) = (S_VAL(prop->def->curr) == sym) ? yes : no;
+		}
+	} else {
+		prop = sym_get_default_prop(sym);
+		if (prop) {
+			sym->flags |= SYMBOL_WRITE;
+			sym_calc_value(prop->def);
+			newval = prop->def->curr;
+		}
+	}
+
+	switch (sym_get_type(sym)) {
+	case S_TRISTATE:
+		if (S_TRI(newval) != mod)
+			break;
+		sym_calc_value(modules_sym);
+		if (S_TRI(modules_sym->curr) == no)
+			S_TRI(newval) = yes;
+		break;
+	case S_BOOLEAN:
+		if (S_TRI(newval) == mod)
+			S_TRI(newval) = yes;
+	}
+
+out:
+	sym->curr = newval;
+
+	if (sym_is_choice(sym) && S_TRI(newval) == yes) {
+		def_sym = S_VAL(sym->def);
+		if (def_sym) {
+			sym_calc_visibility(def_sym);
+			if (def_sym->visible == no)
+				def_sym = NULL;
+		}
+		if (!def_sym) {
+			for_all_defaults(sym, def_prop) {
+				if (E_CALC(def_prop->visible) == no)
+					continue;
+				sym_calc_visibility(def_prop->def);
+				if (def_prop->def->visible != no) {
+					def_sym = def_prop->def;
+					break;
+				}
+			}
+		}
+
+		if (!def_sym) {
+			prop = sym_get_choice_prop(sym);
+			for (e = prop->dep; e; e = e->left.expr) {
+				sym_calc_visibility(e->right.sym);
+				if (e->right.sym->visible != no) {
+					def_sym = e->right.sym;
+					break;
+				}
+			}
+		}
+
+		S_VAL(newval) = def_sym;
+	}
+
+	if (memcmp(&oldval, &newval, sizeof(newval)))
+		sym->flags |= SYMBOL_CHANGED;
+	sym->curr = newval;
+
+	if (sym_is_choice(sym)) {
+		int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE);
+		prop = sym_get_choice_prop(sym);
+		for (e = prop->dep; e; e = e->left.expr)
+			e->right.sym->flags |= flags;
+	}
+}
+
+void sym_clear_all_valid(void)
+{
+	struct symbol *sym;
+	int i;
+
+	for_all_symbols(i, sym)
+		sym->flags &= ~SYMBOL_VALID;
+	sym_change_count++;
+}
+
+void sym_set_all_changed(void)
+{
+	struct symbol *sym;
+	int i;
+
+	for_all_symbols(i, sym)
+		sym->flags |= SYMBOL_CHANGED;
+}
+
+bool sym_tristate_within_range(struct symbol *sym, tristate val)
+{
+	int type = sym_get_type(sym);
+
+	if (sym->visible == no)
+		return false;
+
+	if (type != S_BOOLEAN && type != S_TRISTATE)
+		return false;
+
+	switch (val) {
+	case no:
+		if (sym_is_choice_value(sym) && sym->visible == yes)
+			return false;
+		return sym_is_optional(sym);
+	case mod:
+		if (sym_is_choice_value(sym) && sym->visible == yes)
+			return false;
+		return type == S_TRISTATE;
+	case yes:
+		return type == S_BOOLEAN || sym->visible == yes;
+	}
+	return false;
+}
+
+bool sym_set_tristate_value(struct symbol *sym, tristate val)
+{
+	tristate oldval = sym_get_tristate_value(sym);
+
+	if (oldval != val && !sym_tristate_within_range(sym, val))
+		return false;
+
+	if (sym->flags & SYMBOL_NEW) {
+		sym->flags &= ~SYMBOL_NEW;
+		sym->flags |= SYMBOL_CHANGED;
+	}
+	if (sym_is_choice_value(sym) && val == yes) {
+		struct property *prop = sym_get_choice_prop(sym);
+
+		S_VAL(prop->def->def) = sym;
+		prop->def->flags &= ~SYMBOL_NEW;
+	}
+
+	S_TRI(sym->def) = val;
+	if (oldval != val) {
+		sym_clear_all_valid();
+		if (sym == modules_sym)
+			sym_set_all_changed();
+	}
+
+	return true;
+}
+
+tristate sym_toggle_tristate_value(struct symbol *sym)
+{
+	tristate oldval, newval;
+
+	oldval = newval = sym_get_tristate_value(sym);
+	do {
+		switch (newval) {
+		case no:
+			newval = mod;
+			break;
+		case mod:
+			newval = yes;
+			break;
+		case yes:
+			newval = no;
+			break;
+		}
+		if (sym_set_tristate_value(sym, newval))
+			break;
+	} while (oldval != newval);
+	return newval;
+}
+
+bool sym_string_valid(struct symbol *sym, const char *str)
+{
+	char ch;
+
+	switch (sym->type) {
+	case S_STRING:
+		return true;
+	case S_INT:
+		ch = *str++;
+		if (ch == '-')
+			ch = *str++;
+		if (!isdigit(ch))
+			return false;
+		if (ch == '0' && *str != 0)
+			return false;
+		while ((ch = *str++)) {
+			if (!isdigit(ch))
+				return false;
+		}
+		return true;
+	case S_HEX:
+		if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
+			str += 2;
+		ch = *str++;
+		do {
+			if (!isxdigit(ch))
+				return false;
+		} while ((ch = *str++));
+		return true;
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		switch (str[0]) {
+		case 'y':
+		case 'Y':
+			return sym_tristate_within_range(sym, yes);
+		case 'm':
+		case 'M':
+			return sym_tristate_within_range(sym, mod);
+		case 'n':
+		case 'N':
+			return sym_tristate_within_range(sym, no);
+		}
+		return false;
+	default:
+		return false;
+	}
+}
+
+bool sym_set_string_value(struct symbol *sym, const char *newval)
+{
+	const char *oldval;
+	char *val;
+	int size;
+
+	switch (sym->type) {
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		switch (newval[0]) {
+		case 'y':
+		case 'Y':
+			return sym_set_tristate_value(sym, yes);
+		case 'm':
+		case 'M':
+			return sym_set_tristate_value(sym, mod);
+		case 'n':
+		case 'N':
+			return sym_set_tristate_value(sym, no);
+		}
+		return false;
+	default:
+		;
+	}
+
+	if (!sym_string_valid(sym, newval))
+		return false;
+
+	if (sym->flags & SYMBOL_NEW) {
+		sym->flags &= ~SYMBOL_NEW;
+		sym->flags |= SYMBOL_CHANGED;
+	}
+
+	oldval = S_VAL(sym->def);
+	size = strlen(newval) + 1;
+	if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
+		size += 2;
+		S_VAL(sym->def) = val = malloc(size);
+		*val++ = '0';
+		*val++ = 'x';
+	} else if (!oldval || strcmp(oldval, newval))
+		S_VAL(sym->def) = val = malloc(size);
+	else
+		return true;
+
+	strcpy(val, newval);
+	free((void *)oldval);
+	sym_clear_all_valid();
+
+	return true;
+}
+
+const char *sym_get_string_value(struct symbol *sym)
+{
+	tristate val;
+
+	switch (sym->type) {
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		val = sym_get_tristate_value(sym);
+		switch (val) {
+		case no:
+			return "n";
+		case mod:
+			return "m";
+		case yes:
+			return "y";
+		}
+		break;
+	default:
+		;
+	}
+	return (const char *)S_VAL(sym->curr);
+}
+
+bool sym_is_changable(struct symbol *sym)
+{
+	if (sym->visible == no)
+		return false;
+	/* at least 'n' and 'y'/'m' is selectable */
+	if (sym_is_optional(sym))
+		return true;
+	/* no 'n', so 'y' and 'm' must be selectable */
+	if (sym_get_type(sym) == S_TRISTATE && sym->visible == yes)
+		return true;
+	return false;
+}
+
+struct symbol *sym_lookup(const char *name, int isconst)
+{
+	struct symbol *symbol;
+	const char *ptr;
+	char *new_name;
+	int hash = 0;
+
+	//printf("lookup: %s -> ", name);
+	if (name) {
+		if (name[0] && !name[1]) {
+			switch (name[0]) {
+			case 'y': return &symbol_yes;
+			case 'm': return &symbol_mod;
+			case 'n': return &symbol_no;
+			}
+		}
+		for (ptr = name; *ptr; ptr++)
+			hash += *ptr;
+		hash &= 0xff;
+
+		for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
+			if (!strcmp(symbol->name, name)) {
+				if ((isconst && symbol->flags & SYMBOL_CONST) ||
+				    (!isconst && !(symbol->flags & SYMBOL_CONST))) {
+					//printf("h:%p\n", symbol);
+					return symbol;
+				}
+			}
+		}
+		new_name = strdup(name);
+	} else {
+		new_name = NULL;
+		hash = 256;
+	}
+
+	symbol = malloc(sizeof(*symbol));
+	memset(symbol, 0, sizeof(*symbol));
+	symbol->name = new_name;
+	symbol->type = S_UNKNOWN;
+	symbol->flags = SYMBOL_NEW;
+	if (isconst)
+		symbol->flags |= SYMBOL_CONST;
+
+	symbol->next = symbol_hash[hash];
+	symbol_hash[hash] = symbol;
+
+	//printf("n:%p\n", symbol);
+	return symbol;
+}
+
+struct symbol *sym_find(const char *name)
+{
+	struct symbol *symbol = NULL;
+	const char *ptr;
+	int hash = 0;
+
+	if (!name)
+		return NULL;
+
+	if (name[0] && !name[1]) {
+		switch (name[0]) {
+		case 'y': return &symbol_yes;
+		case 'm': return &symbol_mod;
+		case 'n': return &symbol_no;
+		}
+	}
+	for (ptr = name; *ptr; ptr++)
+		hash += *ptr;
+	hash &= 0xff;
+
+	for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
+		if (!strcmp(symbol->name, name) &&
+		    !(symbol->flags & SYMBOL_CONST))
+				break;
+	}
+
+	return symbol;
+}
+
+const char *prop_get_type_name(enum prop_type type)
+{
+	switch (type) {
+	case P_PROMPT:
+		return "prompt";
+	case P_COMMENT:
+		return "comment";
+	case P_MENU:
+		return "menu";
+	case P_ROOTMENU:
+		return "rootmenu";
+	case P_DEFAULT:
+		return "default";
+	case P_CHOICE:
+		return "choice";
+	default:
+		return "unknown";
+	}
+}
diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
new file mode 100644
index 000000000000..6d81e5eb7164
--- /dev/null
+++ b/scripts/kconfig/zconf.l
@@ -0,0 +1,323 @@
+%option backup nostdinit noyywrap full ecs
+%option 8bit backup nodefault perf-report perf-report
+%x COMMAND HELP STRING PARAM
+%{
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+#include "zconf.tab.h"
+
+#define START_STRSIZE	16
+
+char *text;
+static char *text_ptr;
+static int text_size, text_asize;
+
+struct buffer {
+        struct buffer *parent;
+        YY_BUFFER_STATE state;
+};
+
+struct buffer *current_buf;
+
+static int last_ts, first_ts;
+
+static void zconf_endhelp(void);
+static struct buffer *zconf_endfile(void);
+
+void new_string(void)
+{
+	text = malloc(START_STRSIZE);
+	text_asize = START_STRSIZE;
+	text_ptr = text;
+	text_size = 0;
+	*text_ptr = 0;
+}
+
+void append_string(const char *str, int size)
+{
+	int new_size = text_size + size + 1;
+	if (new_size > text_asize) {
+		text = realloc(text, new_size);
+		text_asize = new_size;
+		text_ptr = text + text_size;
+	}
+	memcpy(text_ptr, str, size);
+	text_ptr += size;
+	text_size += size;
+	*text_ptr = 0;
+}
+
+void alloc_string(const char *str, int size)
+{
+	text = malloc(size + 1);
+	memcpy(text, str, size);
+	text[size] = 0;
+}
+%}
+
+ws	[ \n\t]
+n	[A-Za-z0-9_]
+
+%%
+	int str = 0;
+	int ts, i;
+
+[ \t]*#.*\n	current_file->lineno++;
+[ \t]*#.*
+
+[ \t]*\n	current_file->lineno++; return T_EOL;
+
+[ \t]+	{
+	BEGIN(COMMAND);
+}
+
+.	{
+	unput(yytext[0]);
+	//printf("new config: ");
+	//symbol_end(NULL);
+	BEGIN(COMMAND);
+}
+
+
+<COMMAND>{
+	"mainmenu"		BEGIN(PARAM); return T_MAINMENU;
+	"menu"			BEGIN(PARAM); return T_MENU;
+	"endmenu"		BEGIN(PARAM); return T_ENDMENU;
+	"source"		BEGIN(PARAM); return T_SOURCE;
+	"choice"		BEGIN(PARAM); return T_CHOICE;
+	"endchoice"		BEGIN(PARAM); return T_ENDCHOICE;
+	"comment"		BEGIN(PARAM); return T_COMMENT;
+	"config"		BEGIN(PARAM); return T_CONFIG;
+	"help"			BEGIN(PARAM); return T_HELP;
+	"if"			BEGIN(PARAM); return T_IF;
+	"endif"			BEGIN(PARAM); return T_ENDIF;
+	"depends"		BEGIN(PARAM); return T_DEPENDS;
+	"requires"		BEGIN(PARAM); return T_REQUIRES;
+	"optional"		BEGIN(PARAM); return T_OPTIONAL;
+	"default"		BEGIN(PARAM); return T_DEFAULT;
+	"prompt"		BEGIN(PARAM); return T_PROMPT;
+	"tristate"		BEGIN(PARAM); return T_TRISTATE;
+	"bool"			BEGIN(PARAM); return T_BOOLEAN;
+	"boolean"		BEGIN(PARAM); return T_BOOLEAN;
+	"int"			BEGIN(PARAM); return T_INT;
+	"hex"			BEGIN(PARAM); return T_HEX;
+	"string"		BEGIN(PARAM); return T_STRING;
+	{n}+	{
+		alloc_string(yytext, yyleng);
+		zconflval.string = text;
+		return T_WORD;
+	}
+	.
+	\n	current_file->lineno++; BEGIN(INITIAL);
+}
+
+<PARAM>{
+	"&&"	return T_AND;
+	"||"	return T_OR;
+	"("	return T_OPEN_PAREN;
+	")"	return T_CLOSE_PAREN;
+	"!"	return T_NOT;
+	"="	return T_EQUAL;
+	"!="	return T_UNEQUAL;
+	"if"	return T_IF;
+	"on"	return T_ON;
+	\"|\'	{
+		str = yytext[0];
+		new_string();
+		BEGIN(STRING);
+	}
+	\n	BEGIN(INITIAL); current_file->lineno++; return T_EOL;
+	---	/* ignore */
+	({n}|[-/.])+	{
+		alloc_string(yytext, yyleng);
+		zconflval.string = text;
+		return T_WORD;
+	}
+	.
+}
+
+<STRING>{
+	[^'"\n\\]+	{
+		append_string(yytext, yyleng);
+	}
+	\'|\"	{
+		if (str == yytext[0]) {
+			BEGIN(PARAM);
+			zconflval.string = text;
+			//printf("s:%s\n", text);
+			return T_STRING;
+		} else
+			append_string(yytext, 1);
+	}
+	\\[ \t]*\n	append_string(yytext+yyleng-1, 1); current_file->lineno++;
+	\\[ \t]*	append_string(yytext+1, yyleng-1);
+	\\.		append_string(yytext+1, 1);
+	\n	{
+		//printf(":%d: open string!\n", current_file->lineno+1);
+		exit(0);
+	}
+	<<EOF>>	{
+		//printf(":%d: open string!\n", current_file->lineno+1);
+		exit(0);
+	}
+}
+
+<HELP>{
+	[ \t]+	{
+		ts = 0;
+		for (i = 0; i < yyleng; i++) {
+			if (yytext[i] == '\t')
+				ts = (ts & ~7) + 8;
+			else
+				ts++;
+		}
+		last_ts = ts;
+		if (first_ts) {
+			if (ts < first_ts) {
+				zconf_endhelp();
+				return T_HELPTEXT;
+			}
+			ts -= first_ts;
+			while (ts > 8) {
+				append_string("        ", 8);
+				ts -= 8;
+			}
+			append_string("        ", ts);
+		}
+		
+	}
+	\n/[^ \t\n] {
+		current_file->lineno++;
+		zconf_endhelp();
+		return T_HELPTEXT;
+	}
+	[ \t]*\n	{
+		current_file->lineno++;
+		append_string("\n", 1);
+	}
+	[^ \t\n].* {
+		append_string(yytext, yyleng);
+		if (!first_ts)
+			first_ts = last_ts;
+	}
+	<<EOF>>	{
+		zconf_endhelp();
+		return T_HELPTEXT;
+	}
+}
+
+<<EOF>>	{
+	if (current_buf) {
+		zconf_endfile();
+		return T_EOF;
+	}
+	yyterminate();
+}
+
+%%
+void zconf_starthelp(void)
+{
+	new_string();
+	last_ts = first_ts = 0;
+	BEGIN(HELP);
+}
+
+static void zconf_endhelp(void)
+{
+	zconflval.string = text;
+	BEGIN(INITIAL); 
+}
+
+void zconf_initscan(const char *name)
+{
+	yyin = fopen(name, "r");
+	if (!yyin) {
+		printf("can't find file %s\n", name);
+		exit(1);
+	}
+	//fprintf(stderr, "zconf_initscan: %s\n", name);
+
+	current_buf = malloc(sizeof(*current_buf));
+	memset(current_buf, 0, sizeof(*current_buf));
+
+	current_file = file_lookup(name);
+	current_file->lineno = 1;
+	current_file->flags = FILE_BUSY;
+}
+
+void zconf_nextfile(const char *name)
+{
+	struct file *file = file_lookup(name);
+	struct buffer *buf = malloc(sizeof(*buf));
+	memset(buf, 0, sizeof(*buf));
+
+	current_buf->state = YY_CURRENT_BUFFER;
+	yyin = fopen(name, "r");
+	if (!yyin) {
+		printf("%s:%d: can't open file \"%s\"\n", zconf_curname(), zconf_lineno(), name);
+		exit(1);
+	}
+	yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
+	buf->parent = current_buf;
+	current_buf = buf;
+
+	//fprintf(stderr, "zconf_nextfile: %s\n", name);
+
+	if (file->flags & FILE_BUSY) {
+		printf("recursive scan (%s)?\n", name);
+		exit(1);
+	}
+	if (file->flags & FILE_SCANNED) {
+		printf("file %s already scanned?\n", name);
+		exit(1);
+	}
+	file->flags |= FILE_BUSY;
+	file->lineno = 1;
+	file->parent = current_file;
+	current_file = file;
+}
+
+static struct buffer *zconf_endfile(void)
+{
+	struct buffer *parent;
+
+	current_file->flags |= FILE_SCANNED;
+	current_file->flags &= ~FILE_BUSY;
+	current_file = current_file->parent;
+
+	parent = current_buf->parent;
+	if (parent) {
+		yy_delete_buffer(YY_CURRENT_BUFFER);
+		yy_switch_to_buffer(parent->state);
+	}
+	free(current_buf);
+	current_buf = parent;
+
+	return parent;
+}
+
+int zconf_lineno(void)
+{
+	if (current_buf)
+		return current_file->lineno;
+	else
+		return 0;
+}
+
+char *zconf_curname(void)
+{
+	if (current_buf)
+		return current_file->name;
+	else
+		return "<none>";
+}
diff --git a/scripts/kconfig/zconf.tab.c_shipped b/scripts/kconfig/zconf.tab.c_shipped
new file mode 100644
index 000000000000..da46314d8f66
--- /dev/null
+++ b/scripts/kconfig/zconf.tab.c_shipped
@@ -0,0 +1,1866 @@
+/* A Bison parser, made from zconf.y
+   by GNU bison 1.35.  */
+
+#define YYBISON 1  /* Identify Bison output.  */
+
+#define yyparse zconfparse
+#define yylex zconflex
+#define yyerror zconferror
+#define yylval zconflval
+#define yychar zconfchar
+#define yydebug zconfdebug
+#define yynerrs zconfnerrs
+# define	T_MAINMENU	257
+# define	T_MENU	258
+# define	T_ENDMENU	259
+# define	T_SOURCE	260
+# define	T_CHOICE	261
+# define	T_ENDCHOICE	262
+# define	T_COMMENT	263
+# define	T_CONFIG	264
+# define	T_HELP	265
+# define	T_HELPTEXT	266
+# define	T_IF	267
+# define	T_ENDIF	268
+# define	T_DEPENDS	269
+# define	T_REQUIRES	270
+# define	T_OPTIONAL	271
+# define	T_PROMPT	272
+# define	T_DEFAULT	273
+# define	T_TRISTATE	274
+# define	T_BOOLEAN	275
+# define	T_INT	276
+# define	T_HEX	277
+# define	T_WORD	278
+# define	T_STRING	279
+# define	T_UNEQUAL	280
+# define	T_EOF	281
+# define	T_EOL	282
+# define	T_CLOSE_PAREN	283
+# define	T_OPEN_PAREN	284
+# define	T_ON	285
+# define	T_OR	286
+# define	T_AND	287
+# define	T_EQUAL	288
+# define	T_NOT	289
+
+#line 1 "zconf.y"
+
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <ctype.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+#define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
+
+#define PRINTD		0x0001
+#define DEBUG_PARSE	0x0002
+
+int cdebug = PRINTD;
+
+extern int zconflex(void);
+static void zconfprint(const char *err, ...);
+static void zconferror(const char *err);
+static bool zconf_endtoken(int token, int starttoken, int endtoken);
+
+struct symbol *symbol_hash[257];
+
+#define YYERROR_VERBOSE
+
+#line 32 "zconf.y"
+#ifndef YYSTYPE
+typedef union
+{
+	int token;
+	char *string;
+	struct symbol *symbol;
+	struct expr *expr;
+	struct menu *menu;
+} yystype;
+# define YYSTYPE yystype
+# define YYSTYPE_IS_TRIVIAL 1
+#endif
+#line 83 "zconf.y"
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+#ifndef YYDEBUG
+# define YYDEBUG 1
+#endif
+
+
+
+#define	YYFINAL		145
+#define	YYFLAG		-32768
+#define	YYNTBASE	36
+
+/* YYTRANSLATE(YYLEX) -- Bison token number corresponding to YYLEX. */
+#define YYTRANSLATE(x) ((unsigned)(x) <= 289 ? yytranslate[x] : 74)
+
+/* YYTRANSLATE[YYLEX] -- Bison token number corresponding to YYLEX. */
+static const char yytranslate[] =
+{
+       0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,     2,     2,     2,     1,     3,     4,     5,
+       6,     7,     8,     9,    10,    11,    12,    13,    14,    15,
+      16,    17,    18,    19,    20,    21,    22,    23,    24,    25,
+      26,    27,    28,    29,    30,    31,    32,    33,    34,    35
+};
+
+#if YYDEBUG
+static const short yyprhs[] =
+{
+       0,     0,     1,     4,     6,     8,    10,    14,    16,    18,
+      20,    23,    25,    27,    29,    31,    33,    36,    40,    41,
+      45,    49,    52,    55,    58,    61,    64,    67,    70,    74,
+      78,    80,    84,    86,    91,    94,    95,    99,   103,   106,
+     109,   113,   115,   118,   119,   122,   125,   127,   133,   137,
+     138,   141,   144,   147,   150,   154,   156,   161,   164,   165,
+     168,   171,   174,   178,   181,   184,   187,   191,   194,   197,
+     198,   202,   205,   209,   212,   215,   216,   218,   222,   224,
+     226,   228,   230,   232,   234,   236,   237,   240,   242,   246,
+     250,   254,   257,   261,   265,   267
+};
+static const short yyrhs[] =
+{
+      -1,    36,    37,     0,    38,     0,    46,     0,    57,     0,
+       3,    68,    70,     0,     5,     0,    14,     0,     8,     0,
+       1,    70,     0,    52,     0,    62,     0,    40,     0,    60,
+       0,    70,     0,    10,    24,     0,    39,    28,    41,     0,
+       0,    41,    42,    28,     0,    41,    66,    28,     0,    41,
+      64,     0,    41,    28,     0,    20,    67,     0,    21,    67,
+       0,    22,    67,     0,    23,    67,     0,    25,    67,     0,
+      18,    68,    71,     0,    19,    73,    71,     0,     7,     0,
+      43,    28,    47,     0,    69,     0,    44,    49,    45,    28,
+       0,    44,    49,     0,     0,    47,    48,    28,     0,    47,
+      66,    28,     0,    47,    64,     0,    47,    28,     0,    18,
+      68,    71,     0,    17,     0,    19,    73,     0,     0,    49,
+      38,     0,    13,    72,     0,    69,     0,    50,    28,    53,
+      51,    28,     0,    50,    28,    53,     0,     0,    53,    38,
+       0,    53,    57,     0,    53,    46,     0,     4,    68,     0,
+      54,    28,    65,     0,    69,     0,    55,    58,    56,    28,
+       0,    55,    58,     0,     0,    58,    38,     0,    58,    57,
+       0,    58,    46,     0,    58,     1,    28,     0,     6,    68,
+       0,    59,    28,     0,     9,    68,     0,    61,    28,    65,
+       0,    11,    28,     0,    63,    12,     0,     0,    65,    66,
+      28,     0,    65,    28,     0,    15,    31,    72,     0,    15,
+      72,     0,    16,    72,     0,     0,    68,     0,    68,    13,
+      72,     0,    24,     0,    25,     0,     5,     0,     8,     0,
+      14,     0,    28,     0,    27,     0,     0,    13,    72,     0,
+      73,     0,    73,    34,    73,     0,    73,    26,    73,     0,
+      30,    72,    29,     0,    35,    72,     0,    72,    32,    72,
+       0,    72,    33,    72,     0,    24,     0,    25,     0
+};
+
+#endif
+
+#if YYDEBUG
+/* YYRLINE[YYN] -- source line where rule number YYN was defined. */
+static const short yyrline[] =
+{
+       0,    88,    89,    92,    93,    94,    95,    96,    97,    98,
+      99,   102,   104,   105,   106,   107,   113,   121,   127,   129,
+     130,   131,   132,   135,   141,   147,   153,   159,   165,   171,
+     179,   188,   194,   202,   204,   210,   212,   213,   214,   215,
+     218,   224,   230,   237,   239,   244,   254,   262,   264,   270,
+     272,   273,   274,   279,   286,   292,   300,   302,   308,   310,
+     311,   312,   313,   316,   322,   329,   336,   343,   349,   356,
+     357,   358,   361,   366,   371,   379,   381,   385,   390,   391,
+     394,   395,   396,   399,   400,   402,   403,   406,   407,   408,
+     409,   410,   411,   412,   415,   416
+};
+#endif
+
+
+#if (YYDEBUG) || defined YYERROR_VERBOSE
+
+/* YYTNAME[TOKEN_NUM] -- String name of the token TOKEN_NUM. */
+static const char *const yytname[] =
+{
+  "$", "error", "$undefined.", "T_MAINMENU", "T_MENU", "T_ENDMENU", 
+  "T_SOURCE", "T_CHOICE", "T_ENDCHOICE", "T_COMMENT", "T_CONFIG", 
+  "T_HELP", "T_HELPTEXT", "T_IF", "T_ENDIF", "T_DEPENDS", "T_REQUIRES", 
+  "T_OPTIONAL", "T_PROMPT", "T_DEFAULT", "T_TRISTATE", "T_BOOLEAN", 
+  "T_INT", "T_HEX", "T_WORD", "T_STRING", "T_UNEQUAL", "T_EOF", "T_EOL", 
+  "T_CLOSE_PAREN", "T_OPEN_PAREN", "T_ON", "T_OR", "T_AND", "T_EQUAL", 
+  "T_NOT", "input", "block", "common_block", "config_entry_start", 
+  "config_stmt", "config_option_list", "config_option", "choice", 
+  "choice_entry", "choice_end", "choice_stmt", "choice_option_list", 
+  "choice_option", "choice_block", "if", "if_end", "if_stmt", "if_block", 
+  "menu", "menu_entry", "menu_end", "menu_stmt", "menu_block", "source", 
+  "source_stmt", "comment", "comment_stmt", "help_start", "help", 
+  "depends_list", "depends", "prompt_stmt_opt", "prompt", "end", 
+  "nl_or_eof", "if_expr", "expr", "symbol", 0
+};
+#endif
+
+/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */
+static const short yyr1[] =
+{
+       0,    36,    36,    37,    37,    37,    37,    37,    37,    37,
+      37,    38,    38,    38,    38,    38,    39,    40,    41,    41,
+      41,    41,    41,    42,    42,    42,    42,    42,    42,    42,
+      43,    44,    45,    46,    46,    47,    47,    47,    47,    47,
+      48,    48,    48,    49,    49,    50,    51,    52,    52,    53,
+      53,    53,    53,    54,    55,    56,    57,    57,    58,    58,
+      58,    58,    58,    59,    60,    61,    62,    63,    64,    65,
+      65,    65,    66,    66,    66,    67,    67,    67,    68,    68,
+      69,    69,    69,    70,    70,    71,    71,    72,    72,    72,
+      72,    72,    72,    72,    73,    73
+};
+
+/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */
+static const short yyr2[] =
+{
+       0,     0,     2,     1,     1,     1,     3,     1,     1,     1,
+       2,     1,     1,     1,     1,     1,     2,     3,     0,     3,
+       3,     2,     2,     2,     2,     2,     2,     2,     3,     3,
+       1,     3,     1,     4,     2,     0,     3,     3,     2,     2,
+       3,     1,     2,     0,     2,     2,     1,     5,     3,     0,
+       2,     2,     2,     2,     3,     1,     4,     2,     0,     2,
+       2,     2,     3,     2,     2,     2,     3,     2,     2,     0,
+       3,     2,     3,     2,     2,     0,     1,     3,     1,     1,
+       1,     1,     1,     1,     1,     0,     2,     1,     3,     3,
+       3,     2,     3,     3,     1,     1
+};
+
+/* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
+   doesn't specify something else to do.  Zero means the default is an
+   error. */
+static const short yydefact[] =
+{
+       1,     0,     0,     0,     0,     7,     0,    30,     9,     0,
+       0,     0,     8,    84,    83,     2,     3,     0,    13,     0,
+      43,     4,     0,    11,     0,    58,     5,     0,    14,     0,
+      12,    15,    10,    78,    79,     0,    53,    63,    65,    16,
+      94,    95,     0,     0,    45,    87,    18,    35,    34,    49,
+      69,     0,    64,    69,     6,     0,    91,     0,     0,     0,
+       0,    17,    31,    80,    81,    82,    44,     0,    32,    48,
+      54,     0,    59,    61,     0,    60,    55,    66,    90,    92,
+      93,    89,    88,     0,     0,     0,     0,     0,    75,    75,
+      75,    75,    75,    22,     0,     0,    21,     0,    41,     0,
+       0,    39,     0,    38,     0,    33,    50,    52,     0,    51,
+      46,    71,     0,    62,    56,    67,     0,    73,    74,    85,
+      85,    23,    76,    24,    25,    26,    27,    19,    68,    20,
+      85,    42,    36,    37,    47,    70,    72,     0,    28,    29,
+       0,    40,    86,    77,     0,     0
+};
+
+static const short yydefgoto[] =
+{
+       1,    15,    16,    17,    18,    61,    94,    19,    20,    67,
+      21,    62,   102,    48,    22,   108,    23,    69,    24,    25,
+      74,    26,    51,    27,    28,    29,    30,    95,    96,    70,
+     112,   121,   122,    68,    31,   138,    44,    45
+};
+
+static const short yypact[] =
+{
+  -32768,    17,    41,    65,    65,-32768,    65,-32768,-32768,    65,
+     -11,    40,-32768,-32768,-32768,-32768,-32768,    13,-32768,    23,
+  -32768,-32768,    66,-32768,    72,-32768,-32768,    77,-32768,    81,
+  -32768,-32768,-32768,-32768,-32768,    41,-32768,-32768,-32768,-32768,
+  -32768,-32768,    40,    40,    64,    59,-32768,-32768,    98,-32768,
+  -32768,    49,-32768,-32768,-32768,     7,-32768,    40,    40,    67,
+      67,    99,   117,-32768,-32768,-32768,-32768,    85,-32768,    74,
+      18,    88,-32768,-32768,    95,-32768,-32768,    18,-32768,    96,
+  -32768,-32768,-32768,   102,    36,    40,    65,    67,    65,    65,
+      65,    65,    65,-32768,   103,   129,-32768,   114,-32768,    65,
+      67,-32768,   115,-32768,   116,-32768,-32768,-32768,   118,-32768,
+  -32768,-32768,   119,-32768,-32768,-32768,    40,    64,    64,   135,
+     135,-32768,   136,-32768,-32768,-32768,-32768,-32768,-32768,-32768,
+     135,-32768,-32768,-32768,-32768,-32768,    64,    40,-32768,-32768,
+      40,-32768,    64,    64,   150,-32768
+};
+
+static const short yypgoto[] =
+{
+  -32768,-32768,   -37,-32768,-32768,-32768,-32768,-32768,-32768,-32768,
+     -41,-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,
+  -32768,   -32,-32768,-32768,-32768,-32768,-32768,-32768,    89,   100,
+      11,    48,     0,   -22,     3,  -118,   -42,   -52
+};
+
+
+#define	YYLAST		153
+
+
+static const short yytable[] =
+{
+      55,    56,   139,    35,    36,    32,    37,    81,    82,    38,
+      73,    66,   141,    39,    72,    79,    80,   144,     2,    75,
+       3,     4,     5,     6,     7,     8,     9,    10,   107,    76,
+      11,    12,   106,    84,    85,   120,    78,   109,    54,    57,
+      58,    46,   117,   118,    13,    14,   111,   110,   131,   -57,
+      71,    47,   -57,     4,    63,     6,     7,    64,     9,    10,
+      40,    41,    11,    65,    40,    41,    42,   116,    13,    14,
+      42,    43,    97,   104,   136,    43,    13,    14,     4,    63,
+       6,     7,    64,     9,    10,    59,   119,    11,    65,    33,
+      34,    40,    41,    60,    49,   142,    57,    58,   143,   130,
+      50,    13,    14,    63,     6,    52,    64,     9,    10,    53,
+      83,    11,    65,   105,    84,    85,   113,    86,    87,    88,
+      89,    90,    91,   114,    92,    13,    14,    93,    83,    58,
+     115,   127,    84,    85,    98,    99,   100,   123,   124,   125,
+     126,   128,   129,   132,   133,   101,   134,   135,   137,   140,
+     145,   103,     0,    77
+};
+
+static const short yycheck[] =
+{
+      42,    43,   120,     3,     4,     2,     6,    59,    60,     9,
+      51,    48,   130,    24,    51,    57,    58,     0,     1,    51,
+       3,     4,     5,     6,     7,     8,     9,    10,    69,    51,
+      13,    14,    69,    15,    16,    87,    29,    69,    35,    32,
+      33,    28,    84,    85,    27,    28,    28,    69,   100,     0,
+       1,    28,     3,     4,     5,     6,     7,     8,     9,    10,
+      24,    25,    13,    14,    24,    25,    30,    31,    27,    28,
+      30,    35,    61,    62,   116,    35,    27,    28,     4,     5,
+       6,     7,     8,     9,    10,    26,    86,    13,    14,    24,
+      25,    24,    25,    34,    28,   137,    32,    33,   140,    99,
+      28,    27,    28,     5,     6,    28,     8,     9,    10,    28,
+      11,    13,    14,    28,    15,    16,    28,    18,    19,    20,
+      21,    22,    23,    28,    25,    27,    28,    28,    11,    33,
+      28,    28,    15,    16,    17,    18,    19,    89,    90,    91,
+      92,    12,    28,    28,    28,    28,    28,    28,    13,    13,
+       0,    62,    -1,    53
+};
+/* -*-C-*-  Note some compilers choke on comments on `#line' lines.  */
+#line 3 "/usr/share/bison/bison.simple"
+
+/* Skeleton output parser for bison,
+
+   Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002 Free Software
+   Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* As a special exception, when this file is copied by Bison into a
+   Bison output file, you may use that output file without restriction.
+   This special exception was added by the Free Software Foundation
+   in version 1.24 of Bison.  */
+
+/* This is the parser code that is written into each bison parser when
+   the %semantic_parser declaration is not specified in the grammar.
+   It was written by Richard Stallman by simplifying the hairy parser
+   used when %semantic_parser is specified.  */
+
+/* All symbols defined below should begin with yy or YY, to avoid
+   infringing on user name space.  This should be done even for local
+   variables, as they might otherwise be expanded by user macros.
+   There are some unavoidable exceptions within include files to
+   define necessary library symbols; they are noted "INFRINGES ON
+   USER NAME SPACE" below.  */
+
+#if ! defined (yyoverflow) || defined (YYERROR_VERBOSE)
+
+/* The parser invokes alloca or malloc; define the necessary symbols.  */
+
+# if YYSTACK_USE_ALLOCA
+#  define YYSTACK_ALLOC alloca
+# else
+#  ifndef YYSTACK_USE_ALLOCA
+#   if defined (alloca) || defined (_ALLOCA_H)
+#    define YYSTACK_ALLOC alloca
+#   else
+#    ifdef __GNUC__
+#     define YYSTACK_ALLOC __builtin_alloca
+#    endif
+#   endif
+#  endif
+# endif
+
+# ifdef YYSTACK_ALLOC
+   /* Pacify GCC's `empty if-body' warning. */
+#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
+# else
+#  if defined (__STDC__) || defined (__cplusplus)
+#   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+#   define YYSIZE_T size_t
+#  endif
+#  define YYSTACK_ALLOC malloc
+#  define YYSTACK_FREE free
+# endif
+#endif /* ! defined (yyoverflow) || defined (YYERROR_VERBOSE) */
+
+
+#if (! defined (yyoverflow) \
+     && (! defined (__cplusplus) \
+	 || (YYLTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
+
+/* A type that is properly aligned for any stack member.  */
+union yyalloc
+{
+  short yyss;
+  YYSTYPE yyvs;
+# if YYLSP_NEEDED
+  YYLTYPE yyls;
+# endif
+};
+
+/* The size of the maximum gap between one aligned stack and the next.  */
+# define YYSTACK_GAP_MAX (sizeof (union yyalloc) - 1)
+
+/* The size of an array large to enough to hold all stacks, each with
+   N elements.  */
+# if YYLSP_NEEDED
+#  define YYSTACK_BYTES(N) \
+     ((N) * (sizeof (short) + sizeof (YYSTYPE) + sizeof (YYLTYPE))	\
+      + 2 * YYSTACK_GAP_MAX)
+# else
+#  define YYSTACK_BYTES(N) \
+     ((N) * (sizeof (short) + sizeof (YYSTYPE))				\
+      + YYSTACK_GAP_MAX)
+# endif
+
+/* Copy COUNT objects from FROM to TO.  The source and destination do
+   not overlap.  */
+# ifndef YYCOPY
+#  if 1 < __GNUC__
+#   define YYCOPY(To, From, Count) \
+      __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
+#  else
+#   define YYCOPY(To, From, Count)		\
+      do					\
+	{					\
+	  register YYSIZE_T yyi;		\
+	  for (yyi = 0; yyi < (Count); yyi++)	\
+	    (To)[yyi] = (From)[yyi];		\
+	}					\
+      while (0)
+#  endif
+# endif
+
+/* Relocate STACK from its old location to the new one.  The
+   local variables YYSIZE and YYSTACKSIZE give the old and new number of
+   elements in the stack, and YYPTR gives the new location of the
+   stack.  Advance YYPTR to a properly aligned location for the next
+   stack.  */
+# define YYSTACK_RELOCATE(Stack)					\
+    do									\
+      {									\
+	YYSIZE_T yynewbytes;						\
+	YYCOPY (&yyptr->Stack, Stack, yysize);				\
+	Stack = &yyptr->Stack;						\
+	yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAX;	\
+	yyptr += yynewbytes / sizeof (*yyptr);				\
+      }									\
+    while (0)
+
+#endif
+
+
+#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
+# define YYSIZE_T __SIZE_TYPE__
+#endif
+#if ! defined (YYSIZE_T) && defined (size_t)
+# define YYSIZE_T size_t
+#endif
+#if ! defined (YYSIZE_T)
+# if defined (__STDC__) || defined (__cplusplus)
+#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
+#  define YYSIZE_T size_t
+# endif
+#endif
+#if ! defined (YYSIZE_T)
+# define YYSIZE_T unsigned int
+#endif
+
+#define yyerrok		(yyerrstatus = 0)
+#define yyclearin	(yychar = YYEMPTY)
+#define YYEMPTY		-2
+#define YYEOF		0
+#define YYACCEPT	goto yyacceptlab
+#define YYABORT 	goto yyabortlab
+#define YYERROR		goto yyerrlab1
+/* Like YYERROR except do call yyerror.  This remains here temporarily
+   to ease the transition to the new meaning of YYERROR, for GCC.
+   Once GCC version 2 has supplanted version 1, this can go.  */
+#define YYFAIL		goto yyerrlab
+#define YYRECOVERING()  (!!yyerrstatus)
+#define YYBACKUP(Token, Value)					\
+do								\
+  if (yychar == YYEMPTY && yylen == 1)				\
+    {								\
+      yychar = (Token);						\
+      yylval = (Value);						\
+      yychar1 = YYTRANSLATE (yychar);				\
+      YYPOPSTACK;						\
+      goto yybackup;						\
+    }								\
+  else								\
+    { 								\
+      yyerror ("syntax error: cannot back up");			\
+      YYERROR;							\
+    }								\
+while (0)
+
+#define YYTERROR	1
+#define YYERRCODE	256
+
+
+/* YYLLOC_DEFAULT -- Compute the default location (before the actions
+   are run).
+
+   When YYLLOC_DEFAULT is run, CURRENT is set the location of the
+   first token.  By default, to implement support for ranges, extend
+   its range to the last symbol.  */
+
+#ifndef YYLLOC_DEFAULT
+# define YYLLOC_DEFAULT(Current, Rhs, N)       	\
+   Current.last_line   = Rhs[N].last_line;	\
+   Current.last_column = Rhs[N].last_column;
+#endif
+
+
+/* YYLEX -- calling `yylex' with the right arguments.  */
+
+#if YYPURE
+# if YYLSP_NEEDED
+#  ifdef YYLEX_PARAM
+#   define YYLEX		yylex (&yylval, &yylloc, YYLEX_PARAM)
+#  else
+#   define YYLEX		yylex (&yylval, &yylloc)
+#  endif
+# else /* !YYLSP_NEEDED */
+#  ifdef YYLEX_PARAM
+#   define YYLEX		yylex (&yylval, YYLEX_PARAM)
+#  else
+#   define YYLEX		yylex (&yylval)
+#  endif
+# endif /* !YYLSP_NEEDED */
+#else /* !YYPURE */
+# define YYLEX			yylex ()
+#endif /* !YYPURE */
+
+
+/* Enable debugging if requested.  */
+#if YYDEBUG
+
+# ifndef YYFPRINTF
+#  include <stdio.h> /* INFRINGES ON USER NAME SPACE */
+#  define YYFPRINTF fprintf
+# endif
+
+# define YYDPRINTF(Args)			\
+do {						\
+  if (yydebug)					\
+    YYFPRINTF Args;				\
+} while (0)
+/* Nonzero means print parse trace.  It is left uninitialized so that
+   multiple parsers can coexist.  */
+int yydebug;
+#else /* !YYDEBUG */
+# define YYDPRINTF(Args)
+#endif /* !YYDEBUG */
+
+/* YYINITDEPTH -- initial size of the parser's stacks.  */
+#ifndef	YYINITDEPTH
+# define YYINITDEPTH 200
+#endif
+
+/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
+   if the built-in stack extension method is used).
+
+   Do not make this value too large; the results are undefined if
+   SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
+   evaluated with infinite-precision integer arithmetic.  */
+
+#if YYMAXDEPTH == 0
+# undef YYMAXDEPTH
+#endif
+
+#ifndef YYMAXDEPTH
+# define YYMAXDEPTH 10000
+#endif
+
+#ifdef YYERROR_VERBOSE
+
+# ifndef yystrlen
+#  if defined (__GLIBC__) && defined (_STRING_H)
+#   define yystrlen strlen
+#  else
+/* Return the length of YYSTR.  */
+static YYSIZE_T
+#   if defined (__STDC__) || defined (__cplusplus)
+yystrlen (const char *yystr)
+#   else
+yystrlen (yystr)
+     const char *yystr;
+#   endif
+{
+  register const char *yys = yystr;
+
+  while (*yys++ != '\0')
+    continue;
+
+  return yys - yystr - 1;
+}
+#  endif
+# endif
+
+# ifndef yystpcpy
+#  if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE)
+#   define yystpcpy stpcpy
+#  else
+/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
+   YYDEST.  */
+static char *
+#   if defined (__STDC__) || defined (__cplusplus)
+yystpcpy (char *yydest, const char *yysrc)
+#   else
+yystpcpy (yydest, yysrc)
+     char *yydest;
+     const char *yysrc;
+#   endif
+{
+  register char *yyd = yydest;
+  register const char *yys = yysrc;
+
+  while ((*yyd++ = *yys++) != '\0')
+    continue;
+
+  return yyd - 1;
+}
+#  endif
+# endif
+#endif
+
+#line 315 "/usr/share/bison/bison.simple"
+
+
+/* The user can define YYPARSE_PARAM as the name of an argument to be passed
+   into yyparse.  The argument should have type void *.
+   It should actually point to an object.
+   Grammar actions can access the variable by casting it
+   to the proper pointer type.  */
+
+#ifdef YYPARSE_PARAM
+# if defined (__STDC__) || defined (__cplusplus)
+#  define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
+#  define YYPARSE_PARAM_DECL
+# else
+#  define YYPARSE_PARAM_ARG YYPARSE_PARAM
+#  define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
+# endif
+#else /* !YYPARSE_PARAM */
+# define YYPARSE_PARAM_ARG
+# define YYPARSE_PARAM_DECL
+#endif /* !YYPARSE_PARAM */
+
+/* Prevent warning if -Wstrict-prototypes.  */
+#ifdef __GNUC__
+# ifdef YYPARSE_PARAM
+int yyparse (void *);
+# else
+int yyparse (void);
+# endif
+#endif
+
+/* YY_DECL_VARIABLES -- depending whether we use a pure parser,
+   variables are global, or local to YYPARSE.  */
+
+#define YY_DECL_NON_LSP_VARIABLES			\
+/* The lookahead symbol.  */				\
+int yychar;						\
+							\
+/* The semantic value of the lookahead symbol. */	\
+YYSTYPE yylval;						\
+							\
+/* Number of parse errors so far.  */			\
+int yynerrs;
+
+#if YYLSP_NEEDED
+# define YY_DECL_VARIABLES			\
+YY_DECL_NON_LSP_VARIABLES			\
+						\
+/* Location data for the lookahead symbol.  */	\
+YYLTYPE yylloc;
+#else
+# define YY_DECL_VARIABLES			\
+YY_DECL_NON_LSP_VARIABLES
+#endif
+
+
+/* If nonreentrant, generate the variables here. */
+
+#if !YYPURE
+YY_DECL_VARIABLES
+#endif  /* !YYPURE */
+
+int
+yyparse (YYPARSE_PARAM_ARG)
+     YYPARSE_PARAM_DECL
+{
+  /* If reentrant, generate the variables here. */
+#if YYPURE
+  YY_DECL_VARIABLES
+#endif  /* !YYPURE */
+
+  register int yystate;
+  register int yyn;
+  int yyresult;
+  /* Number of tokens to shift before error messages enabled.  */
+  int yyerrstatus;
+  /* Lookahead token as an internal (translated) token number.  */
+  int yychar1 = 0;
+
+  /* Three stacks and their tools:
+     `yyss': related to states,
+     `yyvs': related to semantic values,
+     `yyls': related to locations.
+
+     Refer to the stacks thru separate pointers, to allow yyoverflow
+     to reallocate them elsewhere.  */
+
+  /* The state stack. */
+  short	yyssa[YYINITDEPTH];
+  short *yyss = yyssa;
+  register short *yyssp;
+
+  /* The semantic value stack.  */
+  YYSTYPE yyvsa[YYINITDEPTH];
+  YYSTYPE *yyvs = yyvsa;
+  register YYSTYPE *yyvsp;
+
+#if YYLSP_NEEDED
+  /* The location stack.  */
+  YYLTYPE yylsa[YYINITDEPTH];
+  YYLTYPE *yyls = yylsa;
+  YYLTYPE *yylsp;
+#endif
+
+#if YYLSP_NEEDED
+# define YYPOPSTACK   (yyvsp--, yyssp--, yylsp--)
+#else
+# define YYPOPSTACK   (yyvsp--, yyssp--)
+#endif
+
+  YYSIZE_T yystacksize = YYINITDEPTH;
+
+
+  /* The variables used to return semantic value and location from the
+     action routines.  */
+  YYSTYPE yyval;
+#if YYLSP_NEEDED
+  YYLTYPE yyloc;
+#endif
+
+  /* When reducing, the number of symbols on the RHS of the reduced
+     rule. */
+  int yylen;
+
+  YYDPRINTF ((stderr, "Starting parse\n"));
+
+  yystate = 0;
+  yyerrstatus = 0;
+  yynerrs = 0;
+  yychar = YYEMPTY;		/* Cause a token to be read.  */
+
+  /* Initialize stack pointers.
+     Waste one element of value and location stack
+     so that they stay on the same level as the state stack.
+     The wasted elements are never initialized.  */
+
+  yyssp = yyss;
+  yyvsp = yyvs;
+#if YYLSP_NEEDED
+  yylsp = yyls;
+#endif
+  goto yysetstate;
+
+/*------------------------------------------------------------.
+| yynewstate -- Push a new state, which is found in yystate.  |
+`------------------------------------------------------------*/
+ yynewstate:
+  /* In all cases, when you get here, the value and location stacks
+     have just been pushed. so pushing a state here evens the stacks.
+     */
+  yyssp++;
+
+ yysetstate:
+  *yyssp = yystate;
+
+  if (yyssp >= yyss + yystacksize - 1)
+    {
+      /* Get the current used size of the three stacks, in elements.  */
+      YYSIZE_T yysize = yyssp - yyss + 1;
+
+#ifdef yyoverflow
+      {
+	/* Give user a chance to reallocate the stack. Use copies of
+	   these so that the &'s don't force the real ones into
+	   memory.  */
+	YYSTYPE *yyvs1 = yyvs;
+	short *yyss1 = yyss;
+
+	/* Each stack pointer address is followed by the size of the
+	   data in use in that stack, in bytes.  */
+# if YYLSP_NEEDED
+	YYLTYPE *yyls1 = yyls;
+	/* This used to be a conditional around just the two extra args,
+	   but that might be undefined if yyoverflow is a macro.  */
+	yyoverflow ("parser stack overflow",
+		    &yyss1, yysize * sizeof (*yyssp),
+		    &yyvs1, yysize * sizeof (*yyvsp),
+		    &yyls1, yysize * sizeof (*yylsp),
+		    &yystacksize);
+	yyls = yyls1;
+# else
+	yyoverflow ("parser stack overflow",
+		    &yyss1, yysize * sizeof (*yyssp),
+		    &yyvs1, yysize * sizeof (*yyvsp),
+		    &yystacksize);
+# endif
+	yyss = yyss1;
+	yyvs = yyvs1;
+      }
+#else /* no yyoverflow */
+# ifndef YYSTACK_RELOCATE
+      goto yyoverflowlab;
+# else
+      /* Extend the stack our own way.  */
+      if (yystacksize >= YYMAXDEPTH)
+	goto yyoverflowlab;
+      yystacksize *= 2;
+      if (yystacksize > YYMAXDEPTH)
+	yystacksize = YYMAXDEPTH;
+
+      {
+	short *yyss1 = yyss;
+	union yyalloc *yyptr =
+	  (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize));
+	if (! yyptr)
+	  goto yyoverflowlab;
+	YYSTACK_RELOCATE (yyss);
+	YYSTACK_RELOCATE (yyvs);
+# if YYLSP_NEEDED
+	YYSTACK_RELOCATE (yyls);
+# endif
+# undef YYSTACK_RELOCATE
+	if (yyss1 != yyssa)
+	  YYSTACK_FREE (yyss1);
+      }
+# endif
+#endif /* no yyoverflow */
+
+      yyssp = yyss + yysize - 1;
+      yyvsp = yyvs + yysize - 1;
+#if YYLSP_NEEDED
+      yylsp = yyls + yysize - 1;
+#endif
+
+      YYDPRINTF ((stderr, "Stack size increased to %lu\n",
+		  (unsigned long int) yystacksize));
+
+      if (yyssp >= yyss + yystacksize - 1)
+	YYABORT;
+    }
+
+  YYDPRINTF ((stderr, "Entering state %d\n", yystate));
+
+  goto yybackup;
+
+
+/*-----------.
+| yybackup.  |
+`-----------*/
+yybackup:
+
+/* Do appropriate processing given the current state.  */
+/* Read a lookahead token if we need one and don't already have one.  */
+/* yyresume: */
+
+  /* First try to decide what to do without reference to lookahead token.  */
+
+  yyn = yypact[yystate];
+  if (yyn == YYFLAG)
+    goto yydefault;
+
+  /* Not known => get a lookahead token if don't already have one.  */
+
+  /* yychar is either YYEMPTY or YYEOF
+     or a valid token in external form.  */
+
+  if (yychar == YYEMPTY)
+    {
+      YYDPRINTF ((stderr, "Reading a token: "));
+      yychar = YYLEX;
+    }
+
+  /* Convert token to internal form (in yychar1) for indexing tables with */
+
+  if (yychar <= 0)		/* This means end of input. */
+    {
+      yychar1 = 0;
+      yychar = YYEOF;		/* Don't call YYLEX any more */
+
+      YYDPRINTF ((stderr, "Now at end of input.\n"));
+    }
+  else
+    {
+      yychar1 = YYTRANSLATE (yychar);
+
+#if YYDEBUG
+     /* We have to keep this `#if YYDEBUG', since we use variables
+	which are defined only if `YYDEBUG' is set.  */
+      if (yydebug)
+	{
+	  YYFPRINTF (stderr, "Next token is %d (%s",
+		     yychar, yytname[yychar1]);
+	  /* Give the individual parser a way to print the precise
+	     meaning of a token, for further debugging info.  */
+# ifdef YYPRINT
+	  YYPRINT (stderr, yychar, yylval);
+# endif
+	  YYFPRINTF (stderr, ")\n");
+	}
+#endif
+    }
+
+  yyn += yychar1;
+  if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
+    goto yydefault;
+
+  yyn = yytable[yyn];
+
+  /* yyn is what to do for this token type in this state.
+     Negative => reduce, -yyn is rule number.
+     Positive => shift, yyn is new state.
+       New state is final state => don't bother to shift,
+       just return success.
+     0, or most negative number => error.  */
+
+  if (yyn < 0)
+    {
+      if (yyn == YYFLAG)
+	goto yyerrlab;
+      yyn = -yyn;
+      goto yyreduce;
+    }
+  else if (yyn == 0)
+    goto yyerrlab;
+
+  if (yyn == YYFINAL)
+    YYACCEPT;
+
+  /* Shift the lookahead token.  */
+  YYDPRINTF ((stderr, "Shifting token %d (%s), ",
+	      yychar, yytname[yychar1]));
+
+  /* Discard the token being shifted unless it is eof.  */
+  if (yychar != YYEOF)
+    yychar = YYEMPTY;
+
+  *++yyvsp = yylval;
+#if YYLSP_NEEDED
+  *++yylsp = yylloc;
+#endif
+
+  /* Count tokens shifted since error; after three, turn off error
+     status.  */
+  if (yyerrstatus)
+    yyerrstatus--;
+
+  yystate = yyn;
+  goto yynewstate;
+
+
+/*-----------------------------------------------------------.
+| yydefault -- do the default action for the current state.  |
+`-----------------------------------------------------------*/
+yydefault:
+  yyn = yydefact[yystate];
+  if (yyn == 0)
+    goto yyerrlab;
+  goto yyreduce;
+
+
+/*-----------------------------.
+| yyreduce -- Do a reduction.  |
+`-----------------------------*/
+yyreduce:
+  /* yyn is the number of a rule to reduce with.  */
+  yylen = yyr2[yyn];
+
+  /* If YYLEN is nonzero, implement the default value of the action:
+     `$$ = $1'.
+
+     Otherwise, the following line sets YYVAL to the semantic value of
+     the lookahead token.  This behavior is undocumented and Bison
+     users should not rely upon it.  Assigning to YYVAL
+     unconditionally makes the parser a bit smaller, and it avoids a
+     GCC warning that YYVAL may be used uninitialized.  */
+  yyval = yyvsp[1-yylen];
+
+#if YYLSP_NEEDED
+  /* Similarly for the default location.  Let the user run additional
+     commands if for instance locations are ranges.  */
+  yyloc = yylsp[1-yylen];
+  YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);
+#endif
+
+#if YYDEBUG
+  /* We have to keep this `#if YYDEBUG', since we use variables which
+     are defined only if `YYDEBUG' is set.  */
+  if (yydebug)
+    {
+      int yyi;
+
+      YYFPRINTF (stderr, "Reducing via rule %d (line %d), ",
+		 yyn, yyrline[yyn]);
+
+      /* Print the symbols being reduced, and their result.  */
+      for (yyi = yyprhs[yyn]; yyrhs[yyi] > 0; yyi++)
+	YYFPRINTF (stderr, "%s ", yytname[yyrhs[yyi]]);
+      YYFPRINTF (stderr, " -> %s\n", yytname[yyr1[yyn]]);
+    }
+#endif
+
+  switch (yyn) {
+
+case 7:
+#line 96 "zconf.y"
+{ zconfprint("unexpected 'endmenu' statement"); ;
+    break;}
+case 8:
+#line 97 "zconf.y"
+{ zconfprint("unexpected 'endif' statement"); ;
+    break;}
+case 9:
+#line 98 "zconf.y"
+{ zconfprint("unexpected 'endchoice' statement"); ;
+    break;}
+case 10:
+#line 99 "zconf.y"
+{ zconfprint("syntax error"); yyerrok; ;
+    break;}
+case 16:
+#line 114 "zconf.y"
+{
+	struct symbol *sym = sym_lookup(yyvsp[0].string, 0);
+	sym->flags |= SYMBOL_OPTIONAL;
+	menu_add_entry(sym);
+	printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), yyvsp[0].string);
+;
+    break;}
+case 17:
+#line 122 "zconf.y"
+{
+	menu_end_entry();
+	printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 22:
+#line 133 "zconf.y"
+{ ;
+    break;}
+case 23:
+#line 136 "zconf.y"
+{
+	menu_set_type(S_TRISTATE);
+	printd(DEBUG_PARSE, "%s:%d:tristate\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 24:
+#line 142 "zconf.y"
+{
+	menu_set_type(S_BOOLEAN);
+	printd(DEBUG_PARSE, "%s:%d:boolean\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 25:
+#line 148 "zconf.y"
+{
+	menu_set_type(S_INT);
+	printd(DEBUG_PARSE, "%s:%d:int\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 26:
+#line 154 "zconf.y"
+{
+	menu_set_type(S_HEX);
+	printd(DEBUG_PARSE, "%s:%d:hex\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 27:
+#line 160 "zconf.y"
+{
+	menu_set_type(S_STRING);
+	printd(DEBUG_PARSE, "%s:%d:string\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 28:
+#line 166 "zconf.y"
+{
+	menu_add_prop(P_PROMPT, yyvsp[-1].string, NULL, yyvsp[0].expr);
+	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 29:
+#line 172 "zconf.y"
+{
+	menu_add_prop(P_DEFAULT, NULL, yyvsp[-1].symbol, yyvsp[0].expr);
+	printd(DEBUG_PARSE, "%s:%d:default\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 30:
+#line 180 "zconf.y"
+{
+	struct symbol *sym = sym_lookup(NULL, 0);
+	sym->flags |= SYMBOL_CHOICE;
+	menu_add_entry(sym);
+	menu_add_prop(P_CHOICE, NULL, NULL, NULL);
+	printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 31:
+#line 189 "zconf.y"
+{
+	menu_end_entry();
+	menu_add_menu();
+;
+    break;}
+case 32:
+#line 195 "zconf.y"
+{
+	if (zconf_endtoken(yyvsp[0].token, T_CHOICE, T_ENDCHOICE)) {
+		menu_end_menu();
+		printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
+	}
+;
+    break;}
+case 34:
+#line 205 "zconf.y"
+{
+	printf("%s:%d: missing 'endchoice' for this 'choice' statement\n", current_menu->file->name, current_menu->lineno);
+	zconfnerrs++;
+;
+    break;}
+case 40:
+#line 219 "zconf.y"
+{
+	menu_add_prop(P_PROMPT, yyvsp[-1].string, NULL, yyvsp[0].expr);
+	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 41:
+#line 225 "zconf.y"
+{
+	current_entry->sym->flags |= SYMBOL_OPTIONAL;
+	printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 42:
+#line 231 "zconf.y"
+{
+	menu_add_prop(P_DEFAULT, NULL, yyvsp[0].symbol, NULL);
+	//current_choice->prop->def = $2;
+	printd(DEBUG_PARSE, "%s:%d:default\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 45:
+#line 245 "zconf.y"
+{
+	printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
+	menu_add_entry(NULL);
+	//current_entry->prompt = menu_add_prop(T_IF, NULL, NULL, $2);
+	menu_add_dep(yyvsp[0].expr);
+	menu_end_entry();
+	menu_add_menu();
+;
+    break;}
+case 46:
+#line 255 "zconf.y"
+{
+	if (zconf_endtoken(yyvsp[0].token, T_IF, T_ENDIF)) {
+		menu_end_menu();
+		printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
+	}
+;
+    break;}
+case 48:
+#line 265 "zconf.y"
+{
+	printf("%s:%d: missing 'endif' for this 'if' statement\n", current_menu->file->name, current_menu->lineno);
+	zconfnerrs++;
+;
+    break;}
+case 53:
+#line 280 "zconf.y"
+{
+	menu_add_entry(NULL);
+	menu_add_prop(P_MENU, yyvsp[0].string, NULL, NULL);
+	printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 54:
+#line 287 "zconf.y"
+{
+	menu_end_entry();
+	menu_add_menu();
+;
+    break;}
+case 55:
+#line 293 "zconf.y"
+{
+	if (zconf_endtoken(yyvsp[0].token, T_MENU, T_ENDMENU)) {
+		menu_end_menu();
+		printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
+	}
+;
+    break;}
+case 57:
+#line 303 "zconf.y"
+{
+	printf("%s:%d: missing 'endmenu' for this 'menu' statement\n", current_menu->file->name, current_menu->lineno);
+	zconfnerrs++;
+;
+    break;}
+case 62:
+#line 313 "zconf.y"
+{ zconfprint("invalid menu option"); yyerrok; ;
+    break;}
+case 63:
+#line 317 "zconf.y"
+{
+	yyval.string = yyvsp[0].string;
+	printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), yyvsp[0].string);
+;
+    break;}
+case 64:
+#line 323 "zconf.y"
+{
+	zconf_nextfile(yyvsp[-1].string);
+;
+    break;}
+case 65:
+#line 330 "zconf.y"
+{
+	menu_add_entry(NULL);
+	menu_add_prop(P_COMMENT, yyvsp[0].string, NULL, NULL);
+	printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 66:
+#line 337 "zconf.y"
+{
+	menu_end_entry();
+;
+    break;}
+case 67:
+#line 344 "zconf.y"
+{
+	printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
+	zconf_starthelp();
+;
+    break;}
+case 68:
+#line 350 "zconf.y"
+{
+	current_entry->sym->help = yyvsp[0].string;
+;
+    break;}
+case 71:
+#line 359 "zconf.y"
+{ ;
+    break;}
+case 72:
+#line 362 "zconf.y"
+{
+	menu_add_dep(yyvsp[0].expr);
+	printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 73:
+#line 367 "zconf.y"
+{
+	menu_add_dep(yyvsp[0].expr);
+	printd(DEBUG_PARSE, "%s:%d:depends\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 74:
+#line 372 "zconf.y"
+{
+	menu_add_dep(yyvsp[0].expr);
+	printd(DEBUG_PARSE, "%s:%d:requires\n", zconf_curname(), zconf_lineno());
+;
+    break;}
+case 76:
+#line 382 "zconf.y"
+{
+	menu_add_prop(P_PROMPT, yyvsp[0].string, NULL, NULL);
+;
+    break;}
+case 77:
+#line 386 "zconf.y"
+{
+	menu_add_prop(P_PROMPT, yyvsp[-2].string, NULL, yyvsp[0].expr);
+;
+    break;}
+case 80:
+#line 394 "zconf.y"
+{ yyval.token = T_ENDMENU; ;
+    break;}
+case 81:
+#line 395 "zconf.y"
+{ yyval.token = T_ENDCHOICE; ;
+    break;}
+case 82:
+#line 396 "zconf.y"
+{ yyval.token = T_ENDIF; ;
+    break;}
+case 85:
+#line 402 "zconf.y"
+{ yyval.expr = NULL; ;
+    break;}
+case 86:
+#line 403 "zconf.y"
+{ yyval.expr = yyvsp[0].expr; ;
+    break;}
+case 87:
+#line 406 "zconf.y"
+{ yyval.expr = expr_alloc_symbol(yyvsp[0].symbol); ;
+    break;}
+case 88:
+#line 407 "zconf.y"
+{ yyval.expr = expr_alloc_comp(E_EQUAL, yyvsp[-2].symbol, yyvsp[0].symbol); ;
+    break;}
+case 89:
+#line 408 "zconf.y"
+{ yyval.expr = expr_alloc_comp(E_UNEQUAL, yyvsp[-2].symbol, yyvsp[0].symbol); ;
+    break;}
+case 90:
+#line 409 "zconf.y"
+{ yyval.expr = yyvsp[-1].expr; ;
+    break;}
+case 91:
+#line 410 "zconf.y"
+{ yyval.expr = expr_alloc_one(E_NOT, yyvsp[0].expr); ;
+    break;}
+case 92:
+#line 411 "zconf.y"
+{ yyval.expr = expr_alloc_two(E_OR, yyvsp[-2].expr, yyvsp[0].expr); ;
+    break;}
+case 93:
+#line 412 "zconf.y"
+{ yyval.expr = expr_alloc_two(E_AND, yyvsp[-2].expr, yyvsp[0].expr); ;
+    break;}
+case 94:
+#line 415 "zconf.y"
+{ yyval.symbol = sym_lookup(yyvsp[0].string, 0); free(yyvsp[0].string); ;
+    break;}
+case 95:
+#line 416 "zconf.y"
+{ yyval.symbol = sym_lookup(yyvsp[0].string, 1); free(yyvsp[0].string); ;
+    break;}
+}
+
+#line 705 "/usr/share/bison/bison.simple"
+
+
+  yyvsp -= yylen;
+  yyssp -= yylen;
+#if YYLSP_NEEDED
+  yylsp -= yylen;
+#endif
+
+#if YYDEBUG
+  if (yydebug)
+    {
+      short *yyssp1 = yyss - 1;
+      YYFPRINTF (stderr, "state stack now");
+      while (yyssp1 != yyssp)
+	YYFPRINTF (stderr, " %d", *++yyssp1);
+      YYFPRINTF (stderr, "\n");
+    }
+#endif
+
+  *++yyvsp = yyval;
+#if YYLSP_NEEDED
+  *++yylsp = yyloc;
+#endif
+
+  /* Now `shift' the result of the reduction.  Determine what state
+     that goes to, based on the state we popped back to and the rule
+     number reduced by.  */
+
+  yyn = yyr1[yyn];
+
+  yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
+  if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
+    yystate = yytable[yystate];
+  else
+    yystate = yydefgoto[yyn - YYNTBASE];
+
+  goto yynewstate;
+
+
+/*------------------------------------.
+| yyerrlab -- here on detecting error |
+`------------------------------------*/
+yyerrlab:
+  /* If not already recovering from an error, report this error.  */
+  if (!yyerrstatus)
+    {
+      ++yynerrs;
+
+#ifdef YYERROR_VERBOSE
+      yyn = yypact[yystate];
+
+      if (yyn > YYFLAG && yyn < YYLAST)
+	{
+	  YYSIZE_T yysize = 0;
+	  char *yymsg;
+	  int yyx, yycount;
+
+	  yycount = 0;
+	  /* Start YYX at -YYN if negative to avoid negative indexes in
+	     YYCHECK.  */
+	  for (yyx = yyn < 0 ? -yyn : 0;
+	       yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++)
+	    if (yycheck[yyx + yyn] == yyx)
+	      yysize += yystrlen (yytname[yyx]) + 15, yycount++;
+	  yysize += yystrlen ("parse error, unexpected ") + 1;
+	  yysize += yystrlen (yytname[YYTRANSLATE (yychar)]);
+	  yymsg = (char *) YYSTACK_ALLOC (yysize);
+	  if (yymsg != 0)
+	    {
+	      char *yyp = yystpcpy (yymsg, "parse error, unexpected ");
+	      yyp = yystpcpy (yyp, yytname[YYTRANSLATE (yychar)]);
+
+	      if (yycount < 5)
+		{
+		  yycount = 0;
+		  for (yyx = yyn < 0 ? -yyn : 0;
+		       yyx < (int) (sizeof (yytname) / sizeof (char *));
+		       yyx++)
+		    if (yycheck[yyx + yyn] == yyx)
+		      {
+			const char *yyq = ! yycount ? ", expecting " : " or ";
+			yyp = yystpcpy (yyp, yyq);
+			yyp = yystpcpy (yyp, yytname[yyx]);
+			yycount++;
+		      }
+		}
+	      yyerror (yymsg);
+	      YYSTACK_FREE (yymsg);
+	    }
+	  else
+	    yyerror ("parse error; also virtual memory exhausted");
+	}
+      else
+#endif /* defined (YYERROR_VERBOSE) */
+	yyerror ("parse error");
+    }
+  goto yyerrlab1;
+
+
+/*--------------------------------------------------.
+| yyerrlab1 -- error raised explicitly by an action |
+`--------------------------------------------------*/
+yyerrlab1:
+  if (yyerrstatus == 3)
+    {
+      /* If just tried and failed to reuse lookahead token after an
+	 error, discard it.  */
+
+      /* return failure if at end of input */
+      if (yychar == YYEOF)
+	YYABORT;
+      YYDPRINTF ((stderr, "Discarding token %d (%s).\n",
+		  yychar, yytname[yychar1]));
+      yychar = YYEMPTY;
+    }
+
+  /* Else will try to reuse lookahead token after shifting the error
+     token.  */
+
+  yyerrstatus = 3;		/* Each real token shifted decrements this */
+
+  goto yyerrhandle;
+
+
+/*-------------------------------------------------------------------.
+| yyerrdefault -- current state does not do anything special for the |
+| error token.                                                       |
+`-------------------------------------------------------------------*/
+yyerrdefault:
+#if 0
+  /* This is wrong; only states that explicitly want error tokens
+     should shift them.  */
+
+  /* If its default is to accept any token, ok.  Otherwise pop it.  */
+  yyn = yydefact[yystate];
+  if (yyn)
+    goto yydefault;
+#endif
+
+
+/*---------------------------------------------------------------.
+| yyerrpop -- pop the current state because it cannot handle the |
+| error token                                                    |
+`---------------------------------------------------------------*/
+yyerrpop:
+  if (yyssp == yyss)
+    YYABORT;
+  yyvsp--;
+  yystate = *--yyssp;
+#if YYLSP_NEEDED
+  yylsp--;
+#endif
+
+#if YYDEBUG
+  if (yydebug)
+    {
+      short *yyssp1 = yyss - 1;
+      YYFPRINTF (stderr, "Error: state stack now");
+      while (yyssp1 != yyssp)
+	YYFPRINTF (stderr, " %d", *++yyssp1);
+      YYFPRINTF (stderr, "\n");
+    }
+#endif
+
+/*--------------.
+| yyerrhandle.  |
+`--------------*/
+yyerrhandle:
+  yyn = yypact[yystate];
+  if (yyn == YYFLAG)
+    goto yyerrdefault;
+
+  yyn += YYTERROR;
+  if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
+    goto yyerrdefault;
+
+  yyn = yytable[yyn];
+  if (yyn < 0)
+    {
+      if (yyn == YYFLAG)
+	goto yyerrpop;
+      yyn = -yyn;
+      goto yyreduce;
+    }
+  else if (yyn == 0)
+    goto yyerrpop;
+
+  if (yyn == YYFINAL)
+    YYACCEPT;
+
+  YYDPRINTF ((stderr, "Shifting error token, "));
+
+  *++yyvsp = yylval;
+#if YYLSP_NEEDED
+  *++yylsp = yylloc;
+#endif
+
+  yystate = yyn;
+  goto yynewstate;
+
+
+/*-------------------------------------.
+| yyacceptlab -- YYACCEPT comes here.  |
+`-------------------------------------*/
+yyacceptlab:
+  yyresult = 0;
+  goto yyreturn;
+
+/*-----------------------------------.
+| yyabortlab -- YYABORT comes here.  |
+`-----------------------------------*/
+yyabortlab:
+  yyresult = 1;
+  goto yyreturn;
+
+/*---------------------------------------------.
+| yyoverflowab -- parser overflow comes here.  |
+`---------------------------------------------*/
+yyoverflowlab:
+  yyerror ("parser stack overflow");
+  yyresult = 2;
+  /* Fall through.  */
+
+yyreturn:
+#ifndef yyoverflow
+  if (yyss != yyssa)
+    YYSTACK_FREE (yyss);
+#endif
+  return yyresult;
+}
+#line 419 "zconf.y"
+
+
+void conf_parse(const char *name)
+{
+	zconf_initscan(name);
+
+	sym_init();
+	menu_init();
+	rootmenu.prompt = menu_add_prop(P_MENU, "Linux Kernel Configuration", NULL, NULL);
+
+	//zconfdebug = 1;
+	zconfparse();
+	if (zconfnerrs)
+		exit(1);
+	menu_finalize(&rootmenu);
+
+	modules_sym = sym_lookup("MODULES", 0);
+
+	sym_change_count = 1;
+}
+
+const char *zconf_tokenname(int token)
+{
+	switch (token) {
+	case T_MENU:		return "menu";
+	case T_ENDMENU:		return "endmenu";
+	case T_CHOICE:		return "choice";
+	case T_ENDCHOICE:	return "endchoice";
+	case T_IF:		return "if";
+	case T_ENDIF:		return "endif";
+	}
+	return "<token>";
+} 
+
+static bool zconf_endtoken(int token, int starttoken, int endtoken)
+{
+	if (token != endtoken) {
+		zconfprint("unexpected '%s' within %s block", zconf_tokenname(token), zconf_tokenname(starttoken));
+		zconfnerrs++;
+		return false;
+	}
+	if (current_menu->file != current_file) {
+		zconfprint("'%s' in different file than '%s'", zconf_tokenname(token), zconf_tokenname(starttoken));
+		zconfprint("location of the '%s'", zconf_tokenname(starttoken));
+		zconfnerrs++;
+		return false;
+	}
+	return true;
+}
+
+static void zconfprint(const char *err, ...)
+{
+	va_list ap;
+
+	fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
+	va_start(ap, err);
+	vfprintf(stderr, err, ap);
+	va_end(ap);
+	fprintf(stderr, "\n");
+}
+
+static void zconferror(const char *err)
+{
+	fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno(), err);
+}
+
+void print_quoted_string(FILE *out, const char *str)
+{
+	const char *p;
+	int len;
+
+	putc('"', out);
+	while ((p = strchr(str, '"'))) {
+		len = p - str;
+		if (len)
+			fprintf(out, "%.*s", len, str);
+		fputs("\\\"", out);
+		str = p + 1;
+	}
+	fputs(str, out);
+	putc('"', out);
+}
+
+void print_symbol(FILE *out, struct menu *menu)
+{
+	struct symbol *sym = menu->sym;
+	struct property *prop;
+
+	//sym->flags |= SYMBOL_PRINTED;
+
+	if (sym_is_choice(sym))
+		fprintf(out, "choice\n");
+	else
+		fprintf(out, "config %s\n", sym->name);
+	switch (sym->type) {
+	case S_BOOLEAN:
+		fputs("  boolean\n", out);
+		break;
+	case S_TRISTATE:
+		fputs("  tristate\n", out);
+		break;
+	case S_STRING:
+		fputs("  string\n", out);
+		break;
+	case S_INT:
+		fputs("  integer\n", out);
+		break;
+	case S_HEX:
+		fputs("  hex\n", out);
+		break;
+	default:
+		fputs("  ???\n", out);
+		break;
+	}
+#if 0
+	if (!expr_is_yes(sym->dep)) {
+		fputs("  depends ", out);
+		expr_fprint(sym->dep, out);
+		fputc('\n', out);
+	}
+#endif
+	for (prop = sym->prop; prop; prop = prop->next) {
+		if (prop->menu != menu)
+			continue;
+		switch (prop->type) {
+		case P_PROMPT:
+			fputs("  prompt ", out);
+			print_quoted_string(out, prop->text);
+			if (prop->def) {
+				fputc(' ', out);
+				if (prop->def->flags & SYMBOL_CONST)
+					print_quoted_string(out, prop->def->name);
+				else
+					fputs(prop->def->name, out);
+			}
+			if (!expr_is_yes(E_EXPR(prop->visible))) {
+				fputs(" if ", out);
+				expr_fprint(E_EXPR(prop->visible), out);
+			}
+			fputc('\n', out);
+			break;
+		case P_DEFAULT:
+			fputs( "  default ", out);
+			print_quoted_string(out, prop->def->name);
+			if (!expr_is_yes(E_EXPR(prop->visible))) {
+				fputs(" if ", out);
+				expr_fprint(E_EXPR(prop->visible), out);
+			}
+			fputc('\n', out);
+			break;
+		case P_CHOICE:
+			fputs("  #choice value\n", out);
+			break;
+		default:
+			fprintf(out, "  unknown prop %d!\n", prop->type);
+			break;
+		}
+	}
+	if (sym->help) {
+		int len = strlen(sym->help);
+		while (sym->help[--len] == '\n')
+			sym->help[len] = 0;
+		fprintf(out, "  help\n%s\n", sym->help);
+	}
+	fputc('\n', out);
+}
+
+void zconfdump(FILE *out)
+{
+	//struct file *file;
+	struct property *prop;
+	struct symbol *sym;
+	struct menu *menu;
+
+	menu = rootmenu.list;
+	while (menu) {
+		if ((sym = menu->sym))
+			print_symbol(out, menu);
+		else if ((prop = menu->prompt)) {
+			switch (prop->type) {
+			//case T_MAINMENU:
+			//	fputs("\nmainmenu ", out);
+			//	print_quoted_string(out, prop->text);
+			//	fputs("\n", out);
+			//	break;
+			case P_COMMENT:
+				fputs("\ncomment ", out);
+				print_quoted_string(out, prop->text);
+				fputs("\n", out);
+				break;
+			case P_MENU:
+				fputs("\nmenu ", out);
+				print_quoted_string(out, prop->text);
+				fputs("\n", out);
+				break;
+			//case T_SOURCE:
+			//	fputs("\nsource ", out);
+			//	print_quoted_string(out, prop->text);
+			//	fputs("\n", out);
+			//	break;
+			//case T_IF:
+			//	fputs("\nif\n", out);
+			default:
+				;
+			}
+			if (!expr_is_yes(E_EXPR(prop->visible))) {
+				fputs("  depends ", out);
+				expr_fprint(E_EXPR(prop->visible), out);
+				fputc('\n', out);
+			}
+			fputs("\n", out);
+		}
+
+		if (menu->list)
+			menu = menu->list;
+		else if (menu->next)
+			menu = menu->next;
+		else while ((menu = menu->parent)) {
+			if (menu->prompt && menu->prompt->type == P_MENU)
+				fputs("\nendmenu\n", out);
+			if (menu->next) {
+				menu = menu->next;
+				break;
+			}
+		}
+	}
+}
+
+#include "lex.zconf.c"
+#include "confdata.c"
+#include "expr.c"
+#include "symbol.c"
+#include "menu.c"
diff --git a/scripts/kconfig/zconf.tab.h_shipped b/scripts/kconfig/zconf.tab.h_shipped
new file mode 100644
index 000000000000..1dcffa9895e4
--- /dev/null
+++ b/scripts/kconfig/zconf.tab.h_shipped
@@ -0,0 +1,53 @@
+#ifndef BISON_ZCONF_TAB_H
+# define BISON_ZCONF_TAB_H
+
+#ifndef YYSTYPE
+typedef union
+{
+	int token;
+	char *string;
+	struct symbol *symbol;
+	struct expr *expr;
+	struct menu *menu;
+} yystype;
+# define YYSTYPE yystype
+# define YYSTYPE_IS_TRIVIAL 1
+#endif
+# define	T_MAINMENU	257
+# define	T_MENU	258
+# define	T_ENDMENU	259
+# define	T_SOURCE	260
+# define	T_CHOICE	261
+# define	T_ENDCHOICE	262
+# define	T_COMMENT	263
+# define	T_CONFIG	264
+# define	T_HELP	265
+# define	T_HELPTEXT	266
+# define	T_IF	267
+# define	T_ENDIF	268
+# define	T_DEPENDS	269
+# define	T_REQUIRES	270
+# define	T_OPTIONAL	271
+# define	T_PROMPT	272
+# define	T_DEFAULT	273
+# define	T_TRISTATE	274
+# define	T_BOOLEAN	275
+# define	T_INT	276
+# define	T_HEX	277
+# define	T_WORD	278
+# define	T_STRING	279
+# define	T_UNEQUAL	280
+# define	T_EOF	281
+# define	T_EOL	282
+# define	T_CLOSE_PAREN	283
+# define	T_OPEN_PAREN	284
+# define	T_ON	285
+# define	T_OR	286
+# define	T_AND	287
+# define	T_EQUAL	288
+# define	T_NOT	289
+
+
+extern YYSTYPE zconflval;
+
+#endif /* not BISON_ZCONF_TAB_H */
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
new file mode 100644
index 000000000000..79cb983a6518
--- /dev/null
+++ b/scripts/kconfig/zconf.y
@@ -0,0 +1,651 @@
+%{
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <ctype.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+#define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
+
+#define PRINTD		0x0001
+#define DEBUG_PARSE	0x0002
+
+int cdebug = PRINTD;
+
+extern int zconflex(void);
+static void zconfprint(const char *err, ...);
+static void zconferror(const char *err);
+static bool zconf_endtoken(int token, int starttoken, int endtoken);
+
+struct symbol *symbol_hash[257];
+
+#define YYERROR_VERBOSE
+%}
+%expect 36
+
+%union
+{
+	int token;
+	char *string;
+	struct symbol *symbol;
+	struct expr *expr;
+	struct menu *menu;
+}
+
+%token T_MAINMENU
+%token T_MENU
+%token T_ENDMENU
+%token T_SOURCE
+%token T_CHOICE
+%token T_ENDCHOICE
+%token T_COMMENT
+%token T_CONFIG
+%token T_HELP
+%token <string> T_HELPTEXT
+%token T_IF
+%token T_ENDIF
+%token T_DEPENDS
+%token T_REQUIRES
+%token T_OPTIONAL
+%token T_PROMPT
+%token T_DEFAULT
+%token T_TRISTATE
+%token T_BOOLEAN
+%token T_INT
+%token T_HEX
+%token <string> T_WORD
+%token <string> T_STRING
+%token T_UNEQUAL
+%token T_EOF
+%token T_EOL
+%token T_CLOSE_PAREN
+%token T_OPEN_PAREN
+%token T_ON
+
+%left T_OR
+%left T_AND
+%left T_EQUAL T_UNEQUAL
+%nonassoc T_NOT
+
+%type <string> prompt
+%type <string> source
+%type <symbol> symbol
+%type <expr> expr
+%type <expr> if_expr
+%type <token> end
+
+%{
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+%}
+%%
+input:	  /* empty */
+	| input block
+;
+
+block:	  common_block
+	| choice_stmt
+	| menu_stmt
+	| T_MAINMENU prompt nl_or_eof
+	| T_ENDMENU		{ zconfprint("unexpected 'endmenu' statement"); }
+	| T_ENDIF		{ zconfprint("unexpected 'endif' statement"); }
+	| T_ENDCHOICE		{ zconfprint("unexpected 'endchoice' statement"); }
+	| error nl_or_eof	{ zconfprint("syntax error"); yyerrok; }
+;
+
+common_block:
+	  if_stmt
+	| comment_stmt
+	| config_stmt
+	| source_stmt
+	| nl_or_eof
+;
+
+
+/* config entry */
+
+config_entry_start: T_CONFIG T_WORD
+{
+	struct symbol *sym = sym_lookup($2, 0);
+	sym->flags |= SYMBOL_OPTIONAL;
+	menu_add_entry(sym);
+	printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2);
+};
+
+config_stmt: config_entry_start T_EOL config_option_list
+{
+	menu_end_entry();
+	printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
+};
+
+config_option_list:
+	  /* empty */
+	| config_option_list config_option T_EOL
+	| config_option_list depends T_EOL
+	| config_option_list help
+	| config_option_list T_EOL
+{ };
+
+config_option: T_TRISTATE prompt_stmt_opt
+{
+	menu_set_type(S_TRISTATE);
+	printd(DEBUG_PARSE, "%s:%d:tristate\n", zconf_curname(), zconf_lineno());
+};
+
+config_option: T_BOOLEAN prompt_stmt_opt
+{
+	menu_set_type(S_BOOLEAN);
+	printd(DEBUG_PARSE, "%s:%d:boolean\n", zconf_curname(), zconf_lineno());
+};
+
+config_option: T_INT prompt_stmt_opt
+{
+	menu_set_type(S_INT);
+	printd(DEBUG_PARSE, "%s:%d:int\n", zconf_curname(), zconf_lineno());
+};
+
+config_option: T_HEX prompt_stmt_opt
+{
+	menu_set_type(S_HEX);
+	printd(DEBUG_PARSE, "%s:%d:hex\n", zconf_curname(), zconf_lineno());
+};
+
+config_option: T_STRING prompt_stmt_opt
+{
+	menu_set_type(S_STRING);
+	printd(DEBUG_PARSE, "%s:%d:string\n", zconf_curname(), zconf_lineno());
+};
+
+config_option: T_PROMPT prompt if_expr
+{
+	menu_add_prop(P_PROMPT, $2, NULL, $3);
+	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
+};
+
+config_option: T_DEFAULT symbol if_expr
+{
+	menu_add_prop(P_DEFAULT, NULL, $2, $3);
+	printd(DEBUG_PARSE, "%s:%d:default\n", zconf_curname(), zconf_lineno());
+};
+
+/* choice entry */
+
+choice: T_CHOICE
+{
+	struct symbol *sym = sym_lookup(NULL, 0);
+	sym->flags |= SYMBOL_CHOICE;
+	menu_add_entry(sym);
+	menu_add_prop(P_CHOICE, NULL, NULL, NULL);
+	printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
+};
+
+choice_entry: choice T_EOL choice_option_list
+{
+	menu_end_entry();
+	menu_add_menu();
+};
+
+choice_end: end
+{
+	if (zconf_endtoken($1, T_CHOICE, T_ENDCHOICE)) {
+		menu_end_menu();
+		printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
+	}
+};
+
+choice_stmt:
+	  choice_entry choice_block choice_end T_EOL
+	| choice_entry choice_block
+{
+	printf("%s:%d: missing 'endchoice' for this 'choice' statement\n", current_menu->file->name, current_menu->lineno);
+	zconfnerrs++;
+};
+
+choice_option_list:
+	  /* empty */
+	| choice_option_list choice_option T_EOL
+	| choice_option_list depends T_EOL
+	| choice_option_list help
+	| choice_option_list T_EOL
+;
+
+choice_option: T_PROMPT prompt if_expr
+{
+	menu_add_prop(P_PROMPT, $2, NULL, $3);
+	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
+};
+
+choice_option: T_OPTIONAL
+{
+	current_entry->sym->flags |= SYMBOL_OPTIONAL;
+	printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
+};
+
+choice_option: T_DEFAULT symbol
+{
+	menu_add_prop(P_DEFAULT, NULL, $2, NULL);
+	//current_choice->prop->def = $2;
+	printd(DEBUG_PARSE, "%s:%d:default\n", zconf_curname(), zconf_lineno());
+};
+
+choice_block:
+	  /* empty */
+	| choice_block common_block
+;
+
+/* if entry */
+
+if: T_IF expr
+{
+	printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
+	menu_add_entry(NULL);
+	//current_entry->prompt = menu_add_prop(T_IF, NULL, NULL, $2);
+	menu_add_dep($2);
+	menu_end_entry();
+	menu_add_menu();
+};
+
+if_end: end
+{
+	if (zconf_endtoken($1, T_IF, T_ENDIF)) {
+		menu_end_menu();
+		printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
+	}
+};
+
+if_stmt:
+	  if T_EOL if_block if_end T_EOL
+	| if T_EOL if_block
+{
+	printf("%s:%d: missing 'endif' for this 'if' statement\n", current_menu->file->name, current_menu->lineno);
+	zconfnerrs++;
+};
+
+if_block:
+	  /* empty */
+	| if_block common_block
+	| if_block menu_stmt
+	| if_block choice_stmt
+;
+
+/* menu entry */
+
+menu: T_MENU prompt
+{
+	menu_add_entry(NULL);
+	menu_add_prop(P_MENU, $2, NULL, NULL);
+	printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
+};
+
+menu_entry: menu T_EOL depends_list
+{
+	menu_end_entry();
+	menu_add_menu();
+};
+
+menu_end: end
+{
+	if (zconf_endtoken($1, T_MENU, T_ENDMENU)) {
+		menu_end_menu();
+		printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
+	}
+};
+
+menu_stmt:
+	  menu_entry menu_block menu_end T_EOL
+	| menu_entry menu_block
+{
+	printf("%s:%d: missing 'endmenu' for this 'menu' statement\n", current_menu->file->name, current_menu->lineno);
+	zconfnerrs++;
+};
+
+menu_block:
+	  /* empty */
+	| menu_block common_block
+	| menu_block menu_stmt
+	| menu_block choice_stmt
+	| menu_block error T_EOL		{ zconfprint("invalid menu option"); yyerrok; }
+;
+
+source: T_SOURCE prompt
+{
+	$$ = $2;
+	printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
+};
+
+source_stmt: source T_EOL
+{
+	zconf_nextfile($1);
+};
+
+/* comment entry */
+
+comment: T_COMMENT prompt
+{
+	menu_add_entry(NULL);
+	menu_add_prop(P_COMMENT, $2, NULL, NULL);
+	printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
+};
+
+comment_stmt: comment T_EOL depends_list
+{
+	menu_end_entry();
+};
+
+/* help option */
+
+help_start: T_HELP T_EOL
+{
+	printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
+	zconf_starthelp();
+};
+
+help: help_start T_HELPTEXT
+{
+	current_entry->sym->help = $2;
+};
+
+/* depends option */
+
+depends_list:	  /* empty */
+		| depends_list depends T_EOL
+		| depends_list T_EOL
+{ };
+
+depends: T_DEPENDS T_ON expr
+{
+	menu_add_dep($3);
+	printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
+}
+	| T_DEPENDS expr
+{
+	menu_add_dep($2);
+	printd(DEBUG_PARSE, "%s:%d:depends\n", zconf_curname(), zconf_lineno());
+}
+	| T_REQUIRES expr
+{
+	menu_add_dep($2);
+	printd(DEBUG_PARSE, "%s:%d:requires\n", zconf_curname(), zconf_lineno());
+};
+
+/* prompt statement */
+
+prompt_stmt_opt:
+	  /* empty */
+	| prompt
+{
+	menu_add_prop(P_PROMPT, $1, NULL, NULL);
+}
+	| prompt T_IF expr
+{
+	menu_add_prop(P_PROMPT, $1, NULL, $3);
+};
+
+prompt:	  T_WORD
+	| T_STRING
+;
+
+end:	  T_ENDMENU		{ $$ = T_ENDMENU; }
+	| T_ENDCHOICE		{ $$ = T_ENDCHOICE; }
+	| T_ENDIF		{ $$ = T_ENDIF; }
+;
+
+nl_or_eof:
+	T_EOL | T_EOF;
+
+if_expr:  /* empty */			{ $$ = NULL; }
+	| T_IF expr			{ $$ = $2; }
+;
+
+expr:	  symbol				{ $$ = expr_alloc_symbol($1); }
+	| symbol T_EQUAL symbol			{ $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
+	| symbol T_UNEQUAL symbol		{ $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
+	| T_OPEN_PAREN expr T_CLOSE_PAREN	{ $$ = $2; }
+	| T_NOT expr				{ $$ = expr_alloc_one(E_NOT, $2); }
+	| expr T_OR expr			{ $$ = expr_alloc_two(E_OR, $1, $3); }
+	| expr T_AND expr			{ $$ = expr_alloc_two(E_AND, $1, $3); }
+;
+
+symbol:	  T_WORD	{ $$ = sym_lookup($1, 0); free($1); }
+	| T_STRING	{ $$ = sym_lookup($1, 1); free($1); }
+;
+
+%%
+
+void conf_parse(const char *name)
+{
+	zconf_initscan(name);
+
+	sym_init();
+	menu_init();
+	rootmenu.prompt = menu_add_prop(P_MENU, "Linux Kernel Configuration", NULL, NULL);
+
+	//zconfdebug = 1;
+	zconfparse();
+	if (zconfnerrs)
+		exit(1);
+	menu_finalize(&rootmenu);
+
+	modules_sym = sym_lookup("MODULES", 0);
+
+	sym_change_count = 1;
+}
+
+const char *zconf_tokenname(int token)
+{
+	switch (token) {
+	case T_MENU:		return "menu";
+	case T_ENDMENU:		return "endmenu";
+	case T_CHOICE:		return "choice";
+	case T_ENDCHOICE:	return "endchoice";
+	case T_IF:		return "if";
+	case T_ENDIF:		return "endif";
+	}
+	return "<token>";
+} 
+
+static bool zconf_endtoken(int token, int starttoken, int endtoken)
+{
+	if (token != endtoken) {
+		zconfprint("unexpected '%s' within %s block", zconf_tokenname(token), zconf_tokenname(starttoken));
+		zconfnerrs++;
+		return false;
+	}
+	if (current_menu->file != current_file) {
+		zconfprint("'%s' in different file than '%s'", zconf_tokenname(token), zconf_tokenname(starttoken));
+		zconfprint("location of the '%s'", zconf_tokenname(starttoken));
+		zconfnerrs++;
+		return false;
+	}
+	return true;
+}
+
+static void zconfprint(const char *err, ...)
+{
+	va_list ap;
+
+	fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
+	va_start(ap, err);
+	vfprintf(stderr, err, ap);
+	va_end(ap);
+	fprintf(stderr, "\n");
+}
+
+static void zconferror(const char *err)
+{
+	fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno(), err);
+}
+
+void print_quoted_string(FILE *out, const char *str)
+{
+	const char *p;
+	int len;
+
+	putc('"', out);
+	while ((p = strchr(str, '"'))) {
+		len = p - str;
+		if (len)
+			fprintf(out, "%.*s", len, str);
+		fputs("\\\"", out);
+		str = p + 1;
+	}
+	fputs(str, out);
+	putc('"', out);
+}
+
+void print_symbol(FILE *out, struct menu *menu)
+{
+	struct symbol *sym = menu->sym;
+	struct property *prop;
+
+	//sym->flags |= SYMBOL_PRINTED;
+
+	if (sym_is_choice(sym))
+		fprintf(out, "choice\n");
+	else
+		fprintf(out, "config %s\n", sym->name);
+	switch (sym->type) {
+	case S_BOOLEAN:
+		fputs("  boolean\n", out);
+		break;
+	case S_TRISTATE:
+		fputs("  tristate\n", out);
+		break;
+	case S_STRING:
+		fputs("  string\n", out);
+		break;
+	case S_INT:
+		fputs("  integer\n", out);
+		break;
+	case S_HEX:
+		fputs("  hex\n", out);
+		break;
+	default:
+		fputs("  ???\n", out);
+		break;
+	}
+#if 0
+	if (!expr_is_yes(sym->dep)) {
+		fputs("  depends ", out);
+		expr_fprint(sym->dep, out);
+		fputc('\n', out);
+	}
+#endif
+	for (prop = sym->prop; prop; prop = prop->next) {
+		if (prop->menu != menu)
+			continue;
+		switch (prop->type) {
+		case P_PROMPT:
+			fputs("  prompt ", out);
+			print_quoted_string(out, prop->text);
+			if (prop->def) {
+				fputc(' ', out);
+				if (prop->def->flags & SYMBOL_CONST)
+					print_quoted_string(out, prop->def->name);
+				else
+					fputs(prop->def->name, out);
+			}
+			if (!expr_is_yes(E_EXPR(prop->visible))) {
+				fputs(" if ", out);
+				expr_fprint(E_EXPR(prop->visible), out);
+			}
+			fputc('\n', out);
+			break;
+		case P_DEFAULT:
+			fputs( "  default ", out);
+			print_quoted_string(out, prop->def->name);
+			if (!expr_is_yes(E_EXPR(prop->visible))) {
+				fputs(" if ", out);
+				expr_fprint(E_EXPR(prop->visible), out);
+			}
+			fputc('\n', out);
+			break;
+		case P_CHOICE:
+			fputs("  #choice value\n", out);
+			break;
+		default:
+			fprintf(out, "  unknown prop %d!\n", prop->type);
+			break;
+		}
+	}
+	if (sym->help) {
+		int len = strlen(sym->help);
+		while (sym->help[--len] == '\n')
+			sym->help[len] = 0;
+		fprintf(out, "  help\n%s\n", sym->help);
+	}
+	fputc('\n', out);
+}
+
+void zconfdump(FILE *out)
+{
+	//struct file *file;
+	struct property *prop;
+	struct symbol *sym;
+	struct menu *menu;
+
+	menu = rootmenu.list;
+	while (menu) {
+		if ((sym = menu->sym))
+			print_symbol(out, menu);
+		else if ((prop = menu->prompt)) {
+			switch (prop->type) {
+			//case T_MAINMENU:
+			//	fputs("\nmainmenu ", out);
+			//	print_quoted_string(out, prop->text);
+			//	fputs("\n", out);
+			//	break;
+			case P_COMMENT:
+				fputs("\ncomment ", out);
+				print_quoted_string(out, prop->text);
+				fputs("\n", out);
+				break;
+			case P_MENU:
+				fputs("\nmenu ", out);
+				print_quoted_string(out, prop->text);
+				fputs("\n", out);
+				break;
+			//case T_SOURCE:
+			//	fputs("\nsource ", out);
+			//	print_quoted_string(out, prop->text);
+			//	fputs("\n", out);
+			//	break;
+			//case T_IF:
+			//	fputs("\nif\n", out);
+			default:
+				;
+			}
+			if (!expr_is_yes(E_EXPR(prop->visible))) {
+				fputs("  depends ", out);
+				expr_fprint(E_EXPR(prop->visible), out);
+				fputc('\n', out);
+			}
+			fputs("\n", out);
+		}
+
+		if (menu->list)
+			menu = menu->list;
+		else if (menu->next)
+			menu = menu->next;
+		else while ((menu = menu->parent)) {
+			if (menu->prompt && menu->prompt->type == P_MENU)
+				fputs("\nendmenu\n", out);
+			if (menu->next) {
+				menu = menu->next;
+				break;
+			}
+		}
+	}
+}
+
+#include "lex.zconf.c"
+#include "confdata.c"
+#include "expr.c"
+#include "symbol.c"
+#include "menu.c"