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| author | Joel Stanley <joel@jms.id.au> | 2018-09-17 09:46:21 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-10-13 13:21:25 +0200 |
| commit | aea447141c7e7824b81b49acd1bc785506fba46e (patch) | |
| tree | 9ef2ecda4abfba42068e3cbda1bf6e388795c32f /arch/powerpc/kernel/Makefile | |
| parent | powerpc: Fix signedness bug in update_flash_db() (diff) | |
| download | linux-aea447141c7e7824b81b49acd1bc785506fba46e.tar.xz linux-aea447141c7e7824b81b49acd1bc785506fba46e.zip | |
powerpc: Disable -Wbuiltin-requires-header when setjmp is used
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>
Diffstat (limited to 'arch/powerpc/kernel/Makefile')
| -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 85ffa488dfb5..fb70e9b6fa67 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 |