[2.6 patch] add -Werror-implicit-function-declaration to CFLAGS

Adrian Bunk
2006-07-06T16:37:31Z

Currently, using an undeclared function gives a compile warning, but it
can lead to a nasty to debug runtime stack corruptions if the prototype
of the function is different from what gcc guessed.

With -Werror-implicit-function-declaration we are getting an immediate
compile error instead.

Signed-off-by: Adrian Bunk <bunk@stusta.de>

---

Makefile | 3 ++-
drivers/input/joystick/iforce/Makefile | 2 --
2 files changed, 2 insertions(+), 3 deletions(-)

--- linux-2.6.17-mm6-full/Makefile.old 2006-07-06 12:17:02.000000000 +0200
+++ linux-2.6.17-mm6-full/Makefile 2006-07-06 12:18:52.000000000 +0200
@@ -318,7 +318,8 @@
CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)

CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
- -fno-strict-aliasing -fno-common
+ -fno-strict-aliasing -fno-common \
+ -Werror-implicit-function-declaration
# Force gcc to behave correct even for buggy distributions
CFLAGS += $(call cc-option, -fno-stack-protector-all \
-fno-stack-protector)
--- linux-2.6.17-mm6-full/drivers/input/joystick/iforce/Makefile.old 2006-07-06 12:19:08.000000000 +0200
+++ linux-2.6.17-mm6-full/drivers/input/joystick/iforce/Makefile 2006-07-06 12:19:16.000000000 +0200
@@ -16,5 +16,3 @@
ifeq ($(CONFIG_JOYSTICK_IFORCE_USB),y)
iforce-objs += iforce-usb.o
endif
-
-EXTRA_CFLAGS = -Werror-implicit-function-declaration