From ce94c90a7b966c0bff294f2b582068d984ba172c Mon Sep 17 00:00:00 2001
From: tron <tron@openttd.org>
Date: Wed, 14 Dec 2005 06:16:34 +0000
Subject: (svn r3296) Warn about testing an undefined macro with #if - should
 most probably be #ifdef

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 9cb7c4a97..7d70dee4e 100644
--- a/Makefile
+++ b/Makefile
@@ -293,7 +293,7 @@ CC_VERSION = $(shell $(CC) -dumpversion | cut -c 1,3)
 # GNU make can only test for (in)equality
 # this is a workaround to test for >=
 ifeq ($(shell expr $(CC_VERSION) \>= 29), 1)
-  CFLAGS += -O -Wall -Wno-multichar -Wsign-compare -Wstrict-prototypes
+  CFLAGS += -O -Wall -Wno-multichar -Wsign-compare -Wstrict-prototypes -Wundef
   CFLAGS += -Wwrite-strings -Wpointer-arith
 endif
 ifeq ($(shell expr $(CC_VERSION) \>= 30), 1)
-- 
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