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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/xmon/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/xmon/Makefile')
| -rw-r--r-- | arch/powerpc/xmon/Makefile | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/powerpc/xmon/Makefile b/arch/powerpc/xmon/Makefile index 93cc1f1b8b61..9d7d8e6d705c 100644 --- a/arch/powerpc/xmon/Makefile +++ b/arch/powerpc/xmon/Makefile @@ -1,7 +1,10 @@ # SPDX-License-Identifier: GPL-2.0 # Makefile for xmon -subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror +# Disable clang warning for using setjmp without setjmp.h header +subdir-ccflags-y := $(call cc-disable-warning, builtin-requires-header) + +subdir-ccflags-$(CONFIG_PPC_WERROR) += -Werror GCOV_PROFILE := n UBSAN_SANITIZE := n |