--- extern/btyacc/Makefile.orig	2022-06-07 08:18:52 UTC
+++ extern/btyacc/Makefile
@@ -42,7 +42,7 @@ OTHERS	      = README README.BYACC \
 all:		$(PROGRAM)
 
 $(PROGRAM):     $(OBJS) $(LIBS)
-		$(CC) $(LDFLAGS) -o $(PROGRAM) $(OBJS) $(LIBS)
+		$(CC) $(CFLAGS) $(LDFLAGS) -o $(PROGRAM) $(OBJS) $(LIBS)
 
 clean:;		rm -f $(OBJS)