The kernel passes the ArmV6K architecture to the compiler when using the multi platform selection and enabling ARMv6. Clang older than version 8.0 emit assembly with an non-existing CPU, which then makes the GNU assembler fail. Warn users when compiling ARMv6 using Clang before 8.0.
Suggested-by: Russell King <[email protected]> Signed-off-by: Stefan Agner <[email protected]> Link: https://github.com/ClangBuiltLinux/linux/issues/55 --- include/linux/compiler-clang.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h index b1ce500fe8b3..9df8713bef38 100644 --- a/include/linux/compiler-clang.h +++ b/include/linux/compiler-clang.h @@ -3,6 +3,10 @@ #error "Please don't include <linux/compiler-clang.h> directly, include <linux/compiler.h> instead." #endif +#if defined(CONFIG_ARCH_MULTI_V6) && CONFIG_CLANG_VERSION < 80000 +#error "Sorry, your compiler is too old - please upgrade it." +#endif + /* Some compiler specific definitions are overwritten here * for Clang compiler */ -- 2.19.1
