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| author | Joel Stanley <joel@jms.id.au> | 2018-09-17 17:16:21 +0930 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-13 09:51:05 +0100 |
| commit | 28e1d143b868f762efdb8d4429a8487c2b0a880a (patch) | |
| tree | 336bb2918fcd5cf12c810bd388ede271aae33751 /arch/powerpc/kernel | |
| parent | ba1fe90be68f4b4260a8c76d7941381619ac1cb4 (diff) | |
| download | linux-stable-28e1d143b868f762efdb8d4429a8487c2b0a880a.tar.gz linux-stable-28e1d143b868f762efdb8d4429a8487c2b0a880a.tar.bz2 linux-stable-28e1d143b868f762efdb8d4429a8487c2b0a880a.zip | |
powerpc: Disable -Wbuiltin-requires-header when setjmp is used
commit aea447141c7e7824b81b49acd1bc785506fba46e upstream.
The powerpc kernel uses setjmp which causes a warning when building
with clang:
In file included from arch/powerpc/xmon/xmon.c:51:
./arch/powerpc/include/asm/setjmp.h:15:13: error: declaration of
built-in function 'setjmp' requires inclusion of the header <setjmp.h>
[-Werror,-Wbuiltin-requires-header]
extern long setjmp(long *);
^
./arch/powerpc/include/asm/setjmp.h:16:13: error: declaration of
built-in function 'longjmp' requires inclusion of the header <setjmp.h>
[-Werror,-Wbuiltin-requires-header]
extern void longjmp(long *, long);
^
This *is* the header and we're not using the built-in setjump but
rather the one in arch/powerpc/kernel/misc.S. As the compiler warning
does not make sense, it for the files where setjmp is used.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
[mpe: Move subdir-ccflags in xmon/Makefile to not clobber -Werror]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/Makefile | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 1e64cfe22a83..eac18790d1b1 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -5,6 +5,9 @@ CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' +# Disable clang warning for using setjmp without setjmp.h header +CFLAGS_crash.o += $(call cc-disable-warning, builtin-requires-header) + subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror ifdef CONFIG_PPC64 |