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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-11-06 12:04:55 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-11-14 08:21:22 +0900 |
| commit | 238bcbc4e07fad2fff99c5b157d0c37ccd4d093c (patch) | |
| tree | f9e48c9a0515affd0f3a5cb4af2bf246630851b6 | |
| parent | dbe27a002ef8573168cb64e181458ea23a74e2b6 (diff) | |
| download | lwn-238bcbc4e07fad2fff99c5b157d0c37ccd4d093c.tar.gz lwn-238bcbc4e07fad2fff99c5b157d0c37ccd4d093c.zip | |
kbuild: consolidate Clang compiler flags
Collect basic Clang options such as --target, --prefix, --gcc-toolchain,
-no-integrated-as into a single variable CLANG_FLAGS so that it can be
easily reused in other parts of Makefile.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Greg Hackmann <ghackmann@google.com>
| -rw-r--r-- | Makefile | 13 |
1 files changed, 6 insertions, 7 deletions
@@ -487,18 +487,17 @@ endif ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),) ifneq ($(CROSS_COMPILE),) -CLANG_TARGET := --target=$(notdir $(CROSS_COMPILE:%-=%)) +CLANG_FLAGS := --target=$(notdir $(CROSS_COMPILE:%-=%)) GCC_TOOLCHAIN_DIR := $(dir $(shell which $(LD))) -CLANG_PREFIX := --prefix=$(GCC_TOOLCHAIN_DIR) +CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR) GCC_TOOLCHAIN := $(realpath $(GCC_TOOLCHAIN_DIR)/..) endif ifneq ($(GCC_TOOLCHAIN),) -CLANG_GCC_TC := --gcc-toolchain=$(GCC_TOOLCHAIN) +CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN) endif -KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX) -KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC) $(CLANG_PREFIX) -KBUILD_CFLAGS += -no-integrated-as -KBUILD_AFLAGS += -no-integrated-as +CLANG_FLAGS += -no-integrated-as +KBUILD_CFLAGS += $(CLANG_FLAGS) +KBUILD_AFLAGS += $(CLANG_FLAGS) endif RETPOLINE_CFLAGS_GCC := -mindirect-branch=thunk-extern -mindirect-branch-register |