# Generated automatically from Makefile.in by configure.
srcdir	= .
include	../Makefile.common

DEFS = -I. -I$(srcdir) -I$(srcdir)/../include -D_GNU_SOURCE  -DCONFIG_ROOT_CHECK_OFF=0  $(EXTRA_DEFS)

%.o: %.c
	$(CC) $(CFLAGS) $(DEFS) -c -o $@ $<

######################################################################

all: genksyms

genksyms: genksyms.o parse.o lex.o ../util/libutil.a
	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS) $(LIBS)

parse.o: parse.c
	$(CC) $(CFLAGS) $(PARSERCFLAGS) $(DEFS) -c -o $@ $<

parse.c parse.h: parse.y
	@echo "expect 6 shift/reduce conflicts and 5 reduce/reduce conflicts."
	bison -o parse.c -dtv $^

lex.o: lex.c
	$(CC) $(CFLAGS) $(PARSERCFLAGS) $(DEFS) -c -o $@ $<

lex.c: lex.l parse.h
	flex -o$@ -d $^

crc32.tab: makecrc32.c
	$(BUILDCC) $(BUILDCFLAGS) -o makecrc32 $^
	./makecrc32 > $@.tmp
	mv $@.tmp $@

# Cannot rely on timestamps to detect if keywords.c needs to be regenerated or not.
# Repository checkouts and patch can mangle the timestamps.
# If keywords.gperf == keywords.gperf_shipped then use keywords.c_shipped, 
# otherwise regenerate keywords.c using gperf and update the base files.

keywords.c: keywords.gperf keywords.gperf_shipped keywords.c_shipped
	@cmp $(filter %keywords.gperf_shipped,$^) $(filter %keywords.gperf,$^) && \
	  cp $(filter %keywords.c_shipped,$^) $@ || \
	  (set -ex; \
	   gperf -a -C -E -g -H is_reserved_hash -k 1,3,$$ -N is_reserved_word -p -t $(filter %keywords.gperf,$^) > $@.tmp ; \
	   rm -f $@; \
	   sed -e '/Command-line/s/[^ ]*keywords.gperf/keywords.gperf/' $@.tmp > $@; \
	   rm $@.tmp; \
	   cp -f $(filter %keywords.gperf,$^) $(filter %keywords.gperf_shipped,$^); \
	   cp -f $@ $(filter %keywords.c_shipped,$^); \
	  )

clean:
	rm -f *.o *.tmp parse.output genksyms makecrc32 keywords.c

realclean: clean
	rm -f .depend parse.c parse.h lex.c crc32.tab

	# rm -f keywords.c     gperf is not on all distributions

distclean: realclean
	rm -f Makefile

install install-bin: all
	$(MKDIR) $(DESTDIR)$(sbindir)
	$(INSTALL) $(STRIP) genksyms $(DESTDIR)$(sbindir)

# auto-generated dependancies are almost redundant once we add all the
# rules to get the generated files built first.
dep depend:

genksyms.o: genksyms.c crc32.tab genksyms.h \
  $(srcdir)/../include/util.h $(srcdir)/../include/version.h
lex.o: lex.c keywords.c genksyms.h parse.c $(srcdir)/../include/util.h
parse.o: parse.c genksyms.h
