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| H A D | Makefile | diff a639cea4de2975ac03b9ede78a364e408167760d Fri Nov 22 01:47:47 CST 2024 Tiezhu Yang <yangtiezhu@loongson.cn> LoongArch: Fix build failure with GCC 15 (-std=gnu23)
[ Upstream commit 947d5d036c788156f09e83e7f16322ffe8124384 ]
Whenever I try to build the kernel with upcoming GCC 15 which defaults
to -std=gnu23 I get a build failure:
CC arch/loongarch/vdso/vgetcpu.o
In file included from ./include/uapi/linux/posix_types.h:5,
from ./include/uapi/linux/types.h:14,
from ./include/linux/types.h:6,
from ./include/linux/kasan-checks.h:5,
from ./include/asm-generic/rwonce.h:26,
from ./arch/loongarch/include/generated/asm/rwonce.h:1,
from ./include/linux/compiler.h:317,
from ./include/asm-generic/bug.h:5,
from ./arch/loongarch/include/asm/bug.h:60,
from ./include/linux/bug.h:5,
from ./include/linux/mmdebug.h:5,
from ./include/linux/mm.h:6,
from ./arch/loongarch/include/asm/vdso.h:10,
from arch/loongarch/vdso/vgetcpu.c:6:
./include/linux/stddef.h:11:9: error: expected identifier before 'false'
11 | false = 0,
| ^~~~~
./include/linux/types.h:35:33: error: two or more data types in declaration specifiers
35 | typedef _Bool bool;
| ^~~~
./include/linux/types.h:35:1: warning: useless type name in empty declaration
35 | typedef _Bool bool;
| ^~~~~~~
The kernel builds explicitly with -std=gnu11 in top Makefile, but
arch/loongarch/vdso does not use KBUILD_CFLAGS from the rest of the
kernel, just add -std=gnu11 flag to arch/loongarch/vdso/Makefile.
By the way, commit e8c07082a810 ("Kbuild: move to -std=gnu11") did a
similar change for arch/arm64/kernel/vdso32/Makefile.
Fixes: c6b99bed6b8f ("LoongArch: Add VDSO and VSYSCALL support")
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|