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host-progs := genksyms
always := $(host-progs)
genksyms-objs := genksyms.o parse.o lex.o
HOSTCFLAGS_parse.o := -Wno-uninitialized
# dependencies on generated files need to be listed explicitly
$(obj)/lex.o: $(obj)/parse.h $(obj)/keywords.c
ifdef GENERATE_PARSER
# gperf
quiet_cmd_keywords.c = GPERF $@
cmd_keywords.c = gperf -L ANSI-C -a -C -E -g -H is_reserved_hash \
-k 1,3,$$ -N is_reserved_word -p -t $< > $@
$(obj)/keywords.c: $(obj)/keywords.gperf FORCE
$(call if_changed,keywords.c)
# flex
quiet_cmd_lex.c = FLEX $@
cmd_lex.c = flex -o$@ -d $(filter-out FORCE,$^)
$(obj)/lex.c: $(obj)/lex.l $(obj)/parse.h FORCE
$(call if_changed,lex.c)
# bison
quiet_cmd_parse.c = BISON $@
cmd_parse.c = bison -o$@ -dtv $(filter-out FORCE,$^)
$(obj)/parse.c: $(obj)/parse.y FORCE
$(call if_changed,parse.c)
$(obj)/parse.h: $(obj)/parse.c ;
clean-files += parse.output
endif
targets += $(obj)/keywords.c $(obj)/lex.c $(obj)/parse.c $(obj)/parse.h
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