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| author | Huacai Chen <chenhuacai@loongson.cn> | 2026-05-04 04:00:01 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2026-05-04 04:00:01 +0300 |
| commit | 5643c6b2c8308b206cb01cbfd0e6ac80f9f1bc9a (patch) | |
| tree | 3b9bf33129ee8b69595ce3b01834d3bf28e1f874 | |
| parent | 4808e5cc4fe1f40c4d690d0ce5df0f413fb02938 (diff) | |
| download | linux-5643c6b2c8308b206cb01cbfd0e6ac80f9f1bc9a.tar.xz | |
LoongArch: Specify -m32/-m64 explicitly for 32BIT/64BIT
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>
| -rw-r--r-- | arch/loongarch/Makefile | 2 | ||||
| -rw-r--r-- | arch/loongarch/vdso/Makefile | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile index 47516aeea9d2..54fcfa1eac1f 100644 --- a/arch/loongarch/Makefile +++ b/arch/loongarch/Makefile @@ -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),$(ARCH)) diff --git a/arch/loongarch/vdso/Makefile b/arch/loongarch/vdso/Makefile index 42aa96249828..9c9181bb4071 100644 --- a/arch/loongarch/vdso/Makefile +++ b/arch/loongarch/vdso/Makefile @@ -12,6 +12,8 @@ obj-vdso-$(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) \ |