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LoongArch: Specify -m32/-m64 explicitly for 32BIT/64BIT

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Clang/LLVM build needs -m32/-m64 to switch triple variants (i.e. the
--target=xxx parameter). Otherwise we get build errors for CONFIG_32BIT.

GCC doesn't support -m32/-m64 now, but maybe support in future, so use
cc-option to specify them.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202604232041.ESJDwVG4-lkp@intel.com/
Suggested-by: Nathan Chancellor <nathan@kernel.org
Tested-by: WANG Rui <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Huacai Chen
2026-05-04 09:00:01 +08:00
parent 4808e5cc4f
commit 5643c6b2c8
2 changed files with 4 additions and 0 deletions
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2
arch/loongarch/Makefile
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@@ -55,9 +55,11 @@ endif
ifdef CONFIG_32BIT
tool-archpref = $(32bit-tool-archpref)
UTS_MACHINE := loongarch32
cflags-y += $(call cc-option,-m32)
else
tool-archpref = $(64bit-tool-archpref)
UTS_MACHINE := loongarch64
cflags-y += $(call cc-option,-m64)
endif
ifneq ($(SUBARCH),$(ARCH))

2
arch/loongarch/vdso/Makefile
View File

@@ -12,6 +12,8 @@ obj-vdso-$(CONFIG_GENERIC_GETTIMEOFDAY) += vgettimeofday.o
ccflags-vdso := \
$(filter -I%,$(KBUILD_CFLAGS)) \
$(filter -E%,$(KBUILD_CFLAGS)) \
$(filter -m32,$(KBUILD_CFLAGS)) \
$(filter -m64,$(KBUILD_CFLAGS)) \
$(filter -march=%,$(KBUILD_CFLAGS)) \
$(filter -m%-float,$(KBUILD_CFLAGS)) \
$(CLANG_FLAGS) \