From 6fcb574125e673f33ff058caa54b4e65629f3a08 Mon Sep 17 00:00:00 2001 From: Nick Desaulniers Date: Tue, 18 May 2021 13:58:57 -0700 Subject: [PATCH] powerpc: Kconfig: disable CONFIG_COMPAT for clang < 12 Until clang-12, clang would attempt to assemble 32b powerpc assembler in 64b emulation mode when using a 64b target triple with -m32, leading to errors during the build of the compat VDSO. Simply disable all of CONFIG_COMPAT; users should upgrade to the latest release of clang for proper support. Suggested-by: Nathan Chancellor Signed-off-by: Nick Desaulniers Reviewed-by: Nathan Chancellor Signed-off-by: Michael Ellerman Link: https://github.com/ClangBuiltLinux/linux/issues/1160 Link: https://github.com/llvm/llvm-project/commits/2288319733cd5f525bf7e24dece08bfcf9d0ff9e Link: https://groups.google.com/g/clang-built-linux/c/ayNmi3HoNdY/m/XJAGj_G2AgAJ Link: https://lore.kernel.org/r/20210518205858.2440344-1-ndesaulniers@google.com --- arch/powerpc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 088dd2a..36ba413 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -289,6 +289,7 @@ config PANIC_TIMEOUT config COMPAT bool "Enable support for 32bit binaries" depends on PPC64 + depends on !CC_IS_CLANG || CLANG_VERSION >= 120000 default y if !CPU_LITTLE_ENDIAN select ARCH_WANT_OLD_COMPAT_IPC select COMPAT_OLD_SIGACTION -- 2.7.4