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[PATCH] kbuild: add -Wundef to global CFLAGS

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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@suse.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Olaf Hering 2005-07-21 21:02:09 +02:00 • committed by Sam Ravnborg
parent ce454d4d72
commit 3c521e06fa
1 changed files with 2 additions and 2 deletions
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4
Makefile
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@ -203,7 +203,7 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
HOSTCC = gcc HOSTCC = gcc
HOSTCXX = g++ HOSTCXX = g++
HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer HOSTCFLAGS = -Wall -Wundef -Wstrict-prototypes -O2 -fomit-frame-pointer
HOSTCXXFLAGS = -O2 HOSTCXXFLAGS = -O2
# Decide whether to build built-in, modular, or both. # Decide whether to build built-in, modular, or both.
@ -348,7 +348,7 @@ LINUXINCLUDE := -Iinclude \
CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE) CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)
CFLAGS := -Wall -Wstrict-prototypes -Wno-trigraphs \ CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-fno-strict-aliasing -fno-common \ -fno-strict-aliasing -fno-common \
-ffreestanding -ffreestanding
AFLAGS := -D__ASSEMBLY__ AFLAGS := -D__ASSEMBLY__