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authorRandy Dunlap <rdunlap@infradead.org>2021-09-08 01:42:02 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-08 19:44:42 +0300
commit49832c819ab85b33b7a2a1429c8d067e82be2977 (patch)
tree48d5058e061742f7bb404f4c7f90f3ef2e449a2e
parentac08b1c68d1b1ed3cebb218fc3ea2c07484eb07d (diff)
downloadlinux-49832c819ab85b33b7a2a1429c8d067e82be2977.tar.xz
Makefile: use -Wno-main in the full kernel tree
When using gcc (SUSE Linux) 7.5.0 (on openSUSE 15.3), I see a build warning: kernel/trace/trace_osnoise.c: In function 'start_kthread': kernel/trace/trace_osnoise.c:1461:8: warning: 'main' is usually a function [-Wmain] void *main = osnoise_main; ^~~~ Quieten that warning by using "-Wno-main". It's OK to use "main" as a declaration name in the kernel. Build-tested on most ARCHes. [ v2: only do it for gcc, since clang doesn't have that particular warning ] Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/lkml/20210813224131.25803-1-rdunlap@infradead.org/ Suggested-by: Steven Rostedt <rostedt@goodmis.org> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Daniel Bristot de Oliveira <bristot@kernel.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Michal Marek <michal.lkml@markovi.net> Cc: linux-kbuild@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--Makefile2
1 files changed, 2 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index d45fc2edf186..2d1e491f7737 100644
--- a/Makefile
+++ b/Makefile
@@ -802,6 +802,8 @@ else
# Disabled for clang while comment to attribute conversion happens and
# https://github.com/ClangBuiltLinux/linux/issues/636 is discussed.
KBUILD_CFLAGS += $(call cc-option,-Wimplicit-fallthrough=5,)
+# gcc inanely warns about local variables called 'main'
+KBUILD_CFLAGS += -Wno-main
endif
# These warnings generated too much noise in a regular build.