Commit 876a0600 authored Jun 27, 2019 by Nathan Chancellor Committed by Masahiro Yamada Jul 04, 2019

kbuild: Add ability to test Clang's integrated assembler

There are some people interested in experimenting with Clang's
integrated assembler. To make it easy to do so without source
modification, allow the user to specify 'AS=clang' as part of the
make command to avoid adding '-no-integrated-as' to the {A,C}FLAGS.

Link: https://github.com/ClangBuiltLinux/linux/issues/577


Suggested-by: Dmitry Golovin <dima@golovin.in>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

parent 6f9ac9f4

Makefile

+2 −0

Original line number	Diff line number	Diff line
		@@ -527,7 +527,9 @@ endif
		ifneq ($(GCC_TOOLCHAIN),)
		CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN)
		endif
		ifeq ($(shell $(AS) --version 2>&1 \| head -n 1 \| grep clang),)
		CLANG_FLAGS += -no-integrated-as
		endif
		CLANG_FLAGS += -Werror=unknown-warning-option
		KBUILD_CFLAGS += $(CLANG_FLAGS)
		KBUILD_AFLAGS += $(CLANG_FLAGS)