From cb56ef33764ffe503aa1e1a0848ae097e200d954 Mon Sep 17 00:00:00 2001
From: Kai Germaschewski <kai@tp1.ruhr-uni-bochum.de>
Date: Wed, 16 Oct 2002 12:10:27 -0500
Subject: kbuild: Speed up new "make clean/mrproper"

Do as little as possible apart from calling sub-makes and calling 'rm',
which makes things go quite a bit faster.
---
 Makefile               |  4 ++--
 Rules.make             |  5 +++++
 scripts/Makefile.clean | 42 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 49 insertions(+), 2 deletions(-)
 create mode 100644 scripts/Makefile.clean

diff --git a/Makefile b/Makefile
index 388e62bb287b..06c5c12b104d 100644
--- a/Makefile
+++ b/Makefile
@@ -142,7 +142,7 @@ NM		= $(CROSS_COMPILE)nm
 STRIP		= $(CROSS_COMPILE)strip
 OBJCOPY		= $(CROSS_COMPILE)objcopy
 OBJDUMP		= $(CROSS_COMPILE)objdump
-MAKEFILES	= .config
+#MAKEFILES	= .config
 GENKSYMS	= /sbin/genksyms
 DEPMOD		= /sbin/depmod
 KALLSYMS	= /sbin/kallsyms
@@ -698,7 +698,7 @@ MRPROPER_DIRS += \
 clean-dirs += $(ALL_SUBDIRS) Documentation/DocBook scripts
 
 $(addprefix _clean_,$(clean-dirs)):
-	+@$(call descend,$(patsubst _clean_%,%,$@), subdirclean)
+	$(MAKE) -rR -f scripts/Makefile.clean obj=$(patsubst _clean_%,%,$@)
 
 quiet_cmd_rmclean = RM  $$(CLEAN_FILES)
 cmd_rmclean	  = rm -f $(CLEAN_FILES)
diff --git a/Rules.make b/Rules.make
index 56e62f97f333..577f2c9ee83a 100644
--- a/Rules.make
+++ b/Rules.make
@@ -1,3 +1,6 @@
+
+ifndef no-rules.make
+
 #
 # This file contains rules which are shared between multiple Makefiles.
 #
@@ -623,3 +626,5 @@ ifeq ($(KBUILD_VERBOSE),1)
 descend = echo '$(MAKE) -f $(1)/Makefile $(2)';
 endif
 descend += $(MAKE) -f $(1)/Makefile obj=$(1) $(2)
+
+endif
diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
new file mode 100644
index 000000000000..fa809a7e88ad
--- /dev/null
+++ b/scripts/Makefile.clean
@@ -0,0 +1,42 @@
+
+src := $(obj)
+
+no-rules.make := 1
+
+.PHONY: __clean
+__clean:
+
+include $(obj)/Makefile
+
+__subdir-y	:= $(patsubst %/,%,$(filter %/, $(obj-y)))
+subdir-y	+= $(__subdir-y)
+__subdir-m	:= $(patsubst %/,%,$(filter %/, $(obj-m)))
+subdir-m	+= $(__subdir-m)
+__subdir-n	:= $(patsubst %/,%,$(filter %/, $(obj-n)))
+subdir-n	+= $(__subdir-n)
+__subdir-	:= $(patsubst %/,%,$(filter %/, $(obj-)))
+subdir-		+= $(__subdir-)
+
+subdir-ym	:= $(sort $(subdir-y) $(subdir-m))
+subdir-ymn      := $(sort $(subdir-ym) $(subdir-n) $(subdir-))
+
+EXTRA_TARGETS	:= $(addprefix $(obj)/,$(EXTRA_TARGETS))
+clean-files	:= $(addprefix $(obj)/,$(clean-files))
+host-progs	:= $(addprefix $(obj)/,$(host-progs))
+subdir-ymn	:= $(addprefix $(obj)/,$(subdir-ymn))
+
+__clean-files := $(wildcard $(EXTRA_TARGETS) $(host-progs) $(clean-files))
+
+__clean: $(subdir-ymn)
+ifneq ($(strip $(__clean-files) $(clean-rule)),)
+	rm -f $(__clean-files)
+	$(clean-rule)
+else
+	@/bin/true
+endif
+
+.PHONY: $(subdir-ymn)
+
+$(subdir-ymn):
+	$(MAKE) -rR -f scripts/Makefile.clean obj=$@
+
-- 
cgit v1.2.3


From 6d65aab5bb3bbc05f280b4a49268982dfa76c2e1 Mon Sep 17 00:00:00 2001
From: Kai Germaschewski <kai@tp1.ruhr-uni-bochum.de>
Date: Wed, 16 Oct 2002 12:11:54 -0500
Subject: kbuild: More "make clean" cosmetics

Make the DocBook "make clean" output nicer and use the fast variant
for arch/i386/boot as well.
---
 Documentation/DocBook/Makefile | 5 +++--
 arch/i386/Makefile             | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile
index 2e3a7333354e..dd49e638acd7 100644
--- a/Documentation/DocBook/Makefile
+++ b/Documentation/DocBook/Makefile
@@ -160,7 +160,8 @@ clean-files := $(DOCBOOKS) \
 	$(patsubst %.fig,%.png, $(IMG-parportbook)) \
 	$(C-procfs-example)
 
-clean-rule := rm -rf $(patsubst %.html,%,$(HTML))
+ifneq ($(wildcard $(BOOKS)),)
+clean-rule := rm -rf $(wildcard $(BOOKS))
+endif
 
 include $(TOPDIR)/Rules.make
-
diff --git a/arch/i386/Makefile b/arch/i386/Makefile
index dbd363bdb52f..f23a066d98d8 100644
--- a/arch/i386/Makefile
+++ b/arch/i386/Makefile
@@ -88,6 +88,6 @@ install: vmlinux
 	+@$(call makeboot,BOOTIMAGE=$(BOOTIMAGE) install)
 
 archclean:
-	+@$(call makeboot,subdirclean)
+	$(MAKE) -rR -f scripts/Makefile.clean obj=arch/i386/boot
 
 archmrproper:
-- 
cgit v1.2.3


From 366b173e7136fe4ac6fd252fffec648a5cbf3181 Mon Sep 17 00:00:00 2001
From: Kai Germaschewski <kai@tp1.ruhr-uni-bochum.de>
Date: Wed, 16 Oct 2002 12:17:35 -0500
Subject: kbuild: another "make clean" micro-optimization

Patch by Peter Samuelson, merged to current code, actually has a noticable
impact on "make clean" speed.
---
 Rules.make             | 19 +++++++------------
 scripts/Makefile.clean |  2 +-
 2 files changed, 8 insertions(+), 13 deletions(-)

diff --git a/Rules.make b/Rules.make
index 577f2c9ee83a..9343c984a820 100644
--- a/Rules.make
+++ b/Rules.make
@@ -166,7 +166,7 @@ ifneq ($(strip $(__clean-files) $(clean-rule)),)
 	rm -f $(__clean-files)
 	$(clean-rule)
 else
-	@/bin/true
+	@:
 endif
 
 else
@@ -182,7 +182,7 @@ ifeq ($(strip $(export-objs)),)
 # ---------------------------------------------------------------------------
 
 fastdep: $(subdir-ym)
-	@/bin/true
+	@:
 
 else
 
@@ -274,7 +274,7 @@ modules_install: $(subdir-ym)
 ifneq ($(obj-m),)
 	$(call cmd,modules_install)
 else
-	@/bin/true
+	@:
 endif
 
 else # ! modules_install
@@ -283,23 +283,18 @@ else # ! modules_install
 # Building
 # ==========================================================================
 
-# If a Makefile does define neither O_TARGET nor L_TARGET,
-# use a standard O_TARGET named "built-in.o"
-
-ifndef O_TARGET
-ifndef L_TARGET
-O_TARGET := $(obj)/built-in.o
-endif
-endif
+# If a Makefile does not define a L_TARGET, link an object called "built-in.o"
 
 ifdef L_TARGET
 L_TARGET := $(obj)/$(L_TARGET)
+else
+O_TARGET := $(obj)/built-in.o
 endif
 
 first_rule: $(if $(KBUILD_BUILTIN),$(O_TARGET) $(L_TARGET) $(EXTRA_TARGETS)) \
 	    $(if $(KBUILD_MODULES),$(obj-m)) \
 	    $(subdir-ym)
-	@/bin/true
+	@:
 
 # Compile C sources (.c)
 # ---------------------------------------------------------------------------
diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
index fa809a7e88ad..d7bb2dfb88d8 100644
--- a/scripts/Makefile.clean
+++ b/scripts/Makefile.clean
@@ -32,7 +32,7 @@ ifneq ($(strip $(__clean-files) $(clean-rule)),)
 	rm -f $(__clean-files)
 	$(clean-rule)
 else
-	@/bin/true
+	@:
 endif
 
 .PHONY: $(subdir-ymn)
-- 
cgit v1.2.3


From 2cec3daac2214432db7052d725fcca1e5dec863b Mon Sep 17 00:00:00 2001
From: Kai Germaschewski <kai@tp1.ruhr-uni-bochum.de>
Date: Wed, 16 Oct 2002 23:15:21 -0500
Subject: kbuild: Fix temporary hack

We don't need to include .config for "make clean", but we sure do
otherwise...

(pointed out by Sam Ravnborg)
---
 Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 06c5c12b104d..17c619c35339 100644
--- a/Makefile
+++ b/Makefile
@@ -142,7 +142,7 @@ NM		= $(CROSS_COMPILE)nm
 STRIP		= $(CROSS_COMPILE)strip
 OBJCOPY		= $(CROSS_COMPILE)objcopy
 OBJDUMP		= $(CROSS_COMPILE)objdump
-#MAKEFILES	= .config
+MAKEFILES	= .config
 GENKSYMS	= /sbin/genksyms
 DEPMOD		= /sbin/depmod
 KALLSYMS	= /sbin/kallsyms
@@ -698,7 +698,7 @@ MRPROPER_DIRS += \
 clean-dirs += $(ALL_SUBDIRS) Documentation/DocBook scripts
 
 $(addprefix _clean_,$(clean-dirs)):
-	$(MAKE) -rR -f scripts/Makefile.clean obj=$(patsubst _clean_%,%,$@)
+	$(MAKE) MAKEFILES= -rR -f scripts/Makefile.clean obj=$(patsubst _clean_%,%,$@)
 
 quiet_cmd_rmclean = RM  $$(CLEAN_FILES)
 cmd_rmclean	  = rm -f $(CLEAN_FILES)
-- 
cgit v1.2.3