From 8f4ac3d687a6cd9d403d8c8d2b9a02ac116f5966 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Mon, 22 Sep 2008 10:56:54 -0700
Subject: better yacc rule in Makefile

if y.tab.c is older than y.tab.h, make
interprets doing nothing as a failure,
because y.tab.c hasn't been updated.
so update it.

R=r
DELTA=4  (0 added, 0 deleted, 4 changed)
OCL=15615
CL=15622
---
 src/cmd/cc/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/cmd/cc')

diff --git a/src/cmd/cc/Makefile b/src/cmd/cc/Makefile
index 4247a8b97..61aec26a7 100644
--- a/src/cmd/cc/Makefile
+++ b/src/cmd/cc/Makefile
@@ -42,7 +42,7 @@ y.tab.h: $(YFILES)
 	yacc $(YFLAGS) $(YFILES)
 
 y.tab.c: y.tab.h
-	# do nothing
+	test -f y.tab.c && touch y.tab.c
 
 clean:
 	rm -f $(OFILES) *.6 enam.c 6.out a.out y.tab.h y.tab.c $(LIB)
-- 
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