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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 /Makefile | |
| 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 'Makefile')
| -rw-r--r-- | Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
@@ -1650,6 +1650,7 @@ help: @echo ' 1: warnings which may be relevant and do not occur too often' @echo ' 2: warnings which occur quite often but may still be relevant' @echo ' 3: more obscure warnings, can most likely be ignored' + @echo ' e: warnings are being treated as errors' @echo ' Multiple levels can be combined with W=12 or W=123' @echo '' @echo 'Execute "make" or "make all" to build all targets marked with [*] ' |