[PATCH] add -Wun-def to global CFLAGS

[Olaf Hering]

A recent change to the aic scsi driver removed two defines to detect 
endianness. cpp handles undefined strings as 0. As a result, the test turned
into #if 0 == 0 and the wrong code was selected.
Adding -Wundef to global CFLAGS will catch such errors.

Signed-off-by: Olaf Hering <olh@xxxxxxx>

 Makefile |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6.12.aic-fixing/Makefile
===================================================================
--- linux-2.6.12.aic-fixing.orig/Makefile
+++ linux-2.6.12.aic-fixing/Makefile
@@ -203,7 +203,7 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH"
 
 HOSTCC  	= gcc
 HOSTCXX  	= g++
-HOSTCFLAGS	= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
+HOSTCFLAGS	= -Wall -Wundef -Wstrict-prototypes -O2 -fomit-frame-pointer
 HOSTCXXFLAGS	= -O2
 
 # 	Decide whether to build built-in, modular, or both.
@@ -348,7 +348,7 @@ LINUXINCLUDE    := -Iinclude \
 
 CPPFLAGS        := -D__KERNEL__ $(LINUXINCLUDE)
 
-CFLAGS 		:= -Wall -Wstrict-prototypes -Wno-trigraphs \
+CFLAGS 		:= -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
 	  	   -fno-strict-aliasing -fno-common \
 		   -ffreestanding
 AFLAGS		:= -D__ASSEMBLY__
-
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