On Fri, 13 Aug 2021 15:41:31 -0700 Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote: > 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. > > Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> > Suggested-by: Steven Rostedt <rostedt@xxxxxxxxxxx> > Suggested-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > Cc: Daniel Bristot de Oliveira <bristot@xxxxxxxxxx> > Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx> > Cc: Michal Marek <michal.lkml@xxxxxxxxxxx> > Cc: linux-kbuild@xxxxxxxxxxxxxxx > --- > Makefile | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > --- linux-next-20210812.orig/Makefile > +++ linux-next-20210812/Makefile > @@ -522,7 +522,7 @@ KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-P > KBUILD_CFLAGS := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \ > -fno-strict-aliasing -fno-common -fshort-wchar -fno-PIE \ > -Werror=implicit-function-declaration -Werror=implicit-int \ > - -Werror=return-type -Wno-format-security \ > + -Werror=return-type -Wno-format-security -Wno-main \ Acked-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> -- Steve > -std=gnu89 > KBUILD_CPPFLAGS := -D__KERNEL__ > KBUILD_RUST_TARGET := $(srctree)/arch/$(SRCARCH)/rust/target.json
