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| author | Yann Droneaud <ydroneaud@opteya.com> | 2022-04-08 10:46:07 +0200 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2022-05-08 03:16:59 +0900 |
| commit | c77d06e70d59cbc6e3c22bf644bb0b197a5fc182 (patch) | |
| tree | d6d32c03811d2f6375ff112491e0c6a1f2812534 /scripts/Makefile.extrawarn | |
| parent | feb7d79fea1d43ddf51a09359b52e73bba0340fd (diff) | |
| download | lwn-c77d06e70d59cbc6e3c22bf644bb0b197a5fc182.tar.gz lwn-c77d06e70d59cbc6e3c22bf644bb0b197a5fc182.zip | |
kbuild: support W=e to make build abort in case of warning
When developing new code/feature, CONFIG_WERROR is most
often turned off, especially for people using make W=12 to
get more warnings.
In such case, turning on -Werror temporarily would require
switching on CONFIG_WERROR in the configuration, building,
then switching off CONFIG_WERROR.
For this use case, this patch introduces a new 'e' modifier
to W= as a short hand for KCFLAGS+=-Werror" so that -Werror
got added to the kernel (built-in) and modules' CFLAGS.
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'scripts/Makefile.extrawarn')
| -rw-r--r-- | scripts/Makefile.extrawarn | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn index 650d0b8ceec3..f5f0d6f09053 100644 --- a/scripts/Makefile.extrawarn +++ b/scripts/Makefile.extrawarn @@ -2,8 +2,8 @@ # ========================================================================== # make W=... settings # -# There are three warning groups enabled by W=1, W=2, W=3. -# They are independent, and can be combined like W=12 or W=123. +# There are four warning groups enabled by W=1, W=2, W=3, and W=e +# They are independent, and can be combined like W=12 or W=123e. # ========================================================================== KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned) @@ -94,3 +94,12 @@ KBUILD_CFLAGS += $(call cc-option, -Wpacked-bitfield-compat) KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN3 endif + +# +# W=e - error out on warnings +# +ifneq ($(findstring e, $(KBUILD_EXTRA_WARN)),) + +KBUILD_CFLAGS += -Werror + +endif |