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authorNathan Chancellor <nathan@kernel.org>2021-08-16 13:20:55 -0700
committerMasahiro Yamada <masahiroy@kernel.org>2021-09-03 08:17:20 +0900
commit5c6ae0efca8d7aeac02f8734825067cd9475a264 (patch)
tree4b7c70db950601ddb3a0f19adb72bdd1680de4f2 /Makefile
parenta312b60d6c4f09cebb727ffab68754fbf39dc1f1 (diff)
downloadlinux-5c6ae0efca8d7aeac02f8734825067cd9475a264.tar.gz
kbuild: Add a comment above -Wno-gnu
Whenever a warning is disabled, it is helpful for future travelers to understand why the warning is disabled and why it is acceptable to do so. Add a comment for -Wno-gnu so that people understand why it is disabled. Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index add32a749860..8dc6707542a8 100644
--- a/Makefile
+++ b/Makefile
@@ -782,6 +782,7 @@ KBUILD_CFLAGS += $(stackp-flags-y)
ifdef CONFIG_CC_IS_CLANG
KBUILD_CPPFLAGS += -Qunused-arguments
+# The kernel builds with '-std=gnu89' so use of GNU extensions is acceptable.
KBUILD_CFLAGS += -Wno-gnu
# CLANG uses a _MergedGlobals as optimization, but this breaks modpost, as the
# source of a reference will be _MergedGlobals and not on of the whitelisted names.