X-Git-Url: https://gitweb.dragonflybsd.org/~tuxillo/dragonfly.git/blobdiff_plain/0465e1d385953232678697cd5c17964cf45eaf49..f3dd7aaa1d932bfe070ada30a2bcacd0d60f3680:/usr.bin/m4/Makefile

diff --git a/usr.bin/m4/Makefile b/usr.bin/m4/Makefile
index 16067650ec..8cc7535ffb 100644
--- a/usr.bin/m4/Makefile
+++ b/usr.bin/m4/Makefile
@@ -5,19 +5,32 @@
 # 	if you want the paste & spaste macros.
 
 PROG=	m4
-CFLAGS+=-DEXTENDED -I${.CURDIR} -I${.CURDIR}/lib
+CFLAGS+=-DEXTENDED -I${.CURDIR} -I${.CURDIR}/lib -I.
 DPADD=	${LIBY} ${LIBL} ${LIBM}
 LDADD=	-ly -ll -lm
 
-SRCS=	eval.c expr.c look.c main.c misc.c gnum4.c trace.c parser.y tokenizer.l
+# m4 depends on lex which depends on m4.  Jeeze, gimme a break!  To break
+# this loop we manually lex tokenizer.l and installed it in the source
+# tree as manual_tokenizer.c.  Now we can build m4 without needing lex.
+#
+# To regenerate manual_tokenizer.c rename manual_tokenizer.c to tokenizer.l
+# and manual_tokenizer.o to tokenizer.o, build, copy tokenizer.c from the
+# obj dir to manual_tokenizer.c here, and then adjust the Makefile back to
+# using manual_tokenizer.c.
+#
+# A pox on whatever idiots who thought making lex depend on m4 was a good
+# idea.  m4 is such a piece of crap, nobody should be using it anymore.
+#
+SRCS=	eval.c expr.c look.c main.c misc.c gnum4.c trace.c parser.y
+SRCS+=	manual_tokenizer.c
 .PATH: ${.CURDIR}/lib
 SRCS+=	ohash_create_entry.c ohash_delete.c ohash_do.c ohash_entries.c \
 	ohash_enum.c ohash_init.c ohash_int.h ohash_interval.c \
 	ohash_lookup_interval.c ohash_lookup_memory.c ohash_qlookup.c \
 	ohash_qlookupi.c
 
-tokenizer.o: parser.h
+manual_tokenizer.o: parser.h
 
-CLEANFILES+=	parser.c parser.h tokenizer.o
+CLEANFILES+=	parser.c parser.h manual_tokenizer.o
 
 .include <bsd.prog.mk>