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kernel: Add CC_WERROR config to turn warnings into errors

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Add configuration option CONFIG_CC_WERROR to prevent warnings
from creeping in.

Bug: 141372918
Change-Id: Ie2d067c0177d8f13e9aaa9a78867998e390f89ee
Signed-off-by: Chenglu Lin <chenglulin@google.com>
This commit is contained in:
Chenglu Lin 2019-09-23 13:15:50 +08:00 committed by dianlujitao
parent ede19bd3c1
commit 8979260098
2 changed files with 14 additions and 0 deletions
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4
Makefile
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@ -702,6 +702,10 @@ else
KBUILD_CFLAGS += -O2
endif
ifdef CONFIG_CC_WERROR
KBUILD_CFLAGS += -Werror
endif
# Tell gcc to never replace conditional load with a non-conditional one
KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races)

10
lib/Kconfig.debug
View file

@ -2118,6 +2118,16 @@ config PANIC_ON_DATA_CORRUPTION
recoverable data corruption scenarios to system-halting panics,
for easier detection and debug.
config CC_WERROR
bool "Treat all compile warnings as errors"
default n
help
Select this option to set compiler warnings as errors,
to prevent easily-fixable problems from creeping into
the codebase.
If unsure, say N.
source "samples/Kconfig"
source "lib/Kconfig.kgdb"