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fixed parallel build 

Signed-off-by: Christoph Junghans <junghans@gentoo.org>
This commit is contained in:
Christoph Junghans 2018-12-30 09:04:34 -07:00
parent e8c280034f
commit e4bb3bcbf0
1 changed files with 8 additions and 3 deletions
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11
makefile
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@ -54,10 +54,15 @@ a.out: ytab.o $(OFILES)
$(OFILES): awk.h ytab.h proto.h
ytab.c: awk.h proto.h awkgram.y
#Clear dependency for parallel build: (make -j)
#YACC generated y.tab.c and y.tab.h at the same time
#this needs to be a static pattern rules otherwise multiple target
#are mapped onto multiple executions of yacc, which overwrite
#each others outputs.
y%.c y%.h: awk.h proto.h awkgram.y
$(YACC) $(YFLAGS) awkgram.y
mv y.tab.c ytab.c
mv y.tab.h ytab.h
mv y.$*.c y$*.c
mv y.$*.h y$*.h
ytab.h: ytab.c