diff -ru byaccj1.15.orig/src/Makefile byaccj1.15/src/Makefile
--- byaccj1.15.orig/src/Makefile	2014-06-04 11:10:43.711980001 -0400
+++ byaccj1.15/src/Makefile	2014-06-04 11:13:00.635987894 -0400
@@ -75,7 +75,7 @@
 	$(CC) -c $(CFLAGS) $(INC) $< -o $@
 
 yacc: $(OBJ)
-	$(CC) -o yacc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-min=10.4 $(OBJ)
+	$(CC) -o yacc $(LDFLAGS) $(OBJ)
 	@echo "done"
 
 clean: