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| author |   Nick Desaulniers <ndesaulniers@google.com> | 2021-08-02 11:39:08 -0700 |
|---|---|---|
| committer |   Masahiro Yamada <masahiroy@kernel.org> | 2021-08-10 09:13:25 +0900 |
| commit | 6f5b41a2f5a6314614e286274eb8e985248aac60 (patch) | |
| tree | df4c2d7a9062c50a978016521db89a58df3ab612 /scripts | |
| parent | kbuild: warn if a different compiler is used for external module builds (diff) | |
| download | wireguard-linux-6f5b41a2f5a6314614e286274eb8e985248aac60.tar.xz wireguard-linux-6f5b41a2f5a6314614e286274eb8e985248aac60.zip | |
Makefile: move initial clang flag handling into scripts/Makefile.clang
With some of the changes we'd like to make to CROSS_COMPILE, the initial
block of clang flag handling which controls things like the target triple,
whether or not to use the integrated assembler and how to find GAS,
and erroring on unknown warnings is becoming unwieldy. Move it into its
own file under scripts/.
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/Makefile.clang | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/scripts/Makefile.clang b/scripts/Makefile.clang new file mode 100644 index 000000000000..297932e973d4 --- /dev/null +++ b/scripts/Makefile.clang @@ -0,0 +1,14 @@ +ifneq ($(CROSS_COMPILE),) +CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) +endif +ifeq ($(LLVM_IAS),1) +CLANG_FLAGS += -integrated-as +else +CLANG_FLAGS += -no-integrated-as +GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) +CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE)) +endif +CLANG_FLAGS += -Werror=unknown-warning-option +KBUILD_CFLAGS += $(CLANG_FLAGS) +KBUILD_AFLAGS += $(CLANG_FLAGS) +export CLANG_FLAGS |