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| author | Masahiro Yamada <masahiroy@kernel.org> | 2022-12-06 05:07:30 +0100 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2022-12-11 09:28:00 +0100 |
| commit | efa80b028c7a9c74fd875517aa0fc9fd8d610ed0 (patch) | |
| tree | 2c69df482339eea896d39b3a9aa2d76aa39fa330 | |
| parent | kbuild: Port silent mode detection to future gnu make. (diff) | |
| download | linux-efa80b028c7a9c74fd875517aa0fc9fd8d610ed0.tar.xz linux-efa80b028c7a9c74fd875517aa0fc9fd8d610ed0.zip | |
kbuild: move -Werror from KBUILD_CFLAGS to KBUILD_CPPFLAGS
CONFIG_WERROR turns warnings into errors, which happens only for *.c
files because -Werror is added to KBUILD_CFLAGS.
Adding it to KBUILD_CPPFLAGS makes more sense because preprocessors
understand the -Werror option.
For example, you can put a #warning directive in any preprocessed code.
warning: #warning "this is a warning message" [-Wcpp]
If -Werror is added, it is promoted to an error.
error: #warning "this is a warning message" [-Werror=cpp]
This commit moves -Werror to KBUILD_CPPFLAGS so it works in the same way
for *.c, *.S, *.lds.S or whatever needs preprocessing.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
| -rw-r--r-- | Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -866,7 +866,8 @@ stackp-flags-$(CONFIG_STACKPROTECTOR_STRONG) := -fstack-protector-strong KBUILD_CFLAGS += $(stackp-flags-y) -KBUILD_CFLAGS-$(CONFIG_WERROR) += -Werror +KBUILD_CPPFLAGS-$(CONFIG_WERROR) += -Werror +KBUILD_CPPFLAGS += $(KBUILD_CPPFLAGS-y) KBUILD_CFLAGS-$(CONFIG_CC_NO_ARRAY_BOUNDS) += -Wno-array-bounds KBUILD_RUSTFLAGS-$(CONFIG_WERROR) += -Dwarnings |