Messages in this thread Patch in this message | | | From | Jian Cai <> | Subject | [PATCH] ARM: do not assemble iwmmxt.S with LLVM toolchain | Date | Thu, 9 Apr 2020 16:27:26 -0700 |
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iwmmxt.S contains XScale instructions LLVM ARM backend does not support. Skip this file if LLVM integrated assemmbler or LLD is used to build ARM kernel.
Signed-off-by: Jian Cai <caij2003@gmail.com> --- arch/arm/Kconfig | 2 +- init/Kconfig | 6 ++++++ 2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 66a04f6f4775..39de8fc64a73 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -804,7 +804,7 @@ source "arch/arm/mm/Kconfig" config IWMMXT bool "Enable iWMMXt support" - depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B + depends on !AS_IS_CLANG && !LD_IS_LLD && (CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B) default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B help Enable support for iWMMXt context switching at run time if diff --git a/init/Kconfig b/init/Kconfig index 1c12059e0f7e..b0ab3271e900 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -19,6 +19,12 @@ config GCC_VERSION config CC_IS_CLANG def_bool $(success,$(CC) --version | head -n 1 | grep -q clang) +config AS_IS_CLANG + def_bool $(success,$(AS) --version | head -n 1 | grep -q clang) + +config LD_IS_LLD + def_bool $(success,$(LD) --version | head -n 1 | grep -q LLD) + config CLANG_VERSION int default $(shell,$(srctree)/scripts/clang-version.sh $(CC)) -- 2.26.0.110.g2183baf09c-goog
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