diff options
| author | Nick Desaulniers <ndesaulniers@google.com> | 2021-08-06 10:27:01 -0700 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2021-08-10 09:13:25 +0900 |
| commit | f12b034afeb3a977bbb1c6584dedc0f3dc666f14 (patch) | |
| tree | 3f3a5d488e333bbde7c8b8a00caf05aad1163fb0 /scripts/Makefile.clang | |
| parent | 52cc02b910284d6bddba46cce402044ab775f314 (diff) | |
| download | lwn-f12b034afeb3a977bbb1c6584dedc0f3dc666f14.tar.gz lwn-f12b034afeb3a977bbb1c6584dedc0f3dc666f14.zip | |
scripts/Makefile.clang: default to LLVM_IAS=1
LLVM_IAS=1 controls enabling clang's integrated assembler via
-integrated-as. This was an explicit opt in until we could enable
assembler support in Clang for more architecures. Now we have support
and CI coverage of LLVM_IAS=1 for all architecures except a few more
bugs affecting s390 and powerpc.
This commit flips the default from opt in via LLVM_IAS=1 to opt out via
LLVM_IAS=0. CI systems or developers that were previously doing builds
with CC=clang or LLVM=1 without explicitly setting LLVM_IAS must now
explicitly opt out via LLVM_IAS=0, otherwise they will be implicitly
opted-in.
This finally shortens the command line invocation when cross compiling
with LLVM to simply:
$ make ARCH=arm64 LLVM=1
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'scripts/Makefile.clang')
| -rw-r--r-- | scripts/Makefile.clang | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/scripts/Makefile.clang b/scripts/Makefile.clang index 1f4e3eb70f88..3ae63bd35582 100644 --- a/scripts/Makefile.clang +++ b/scripts/Makefile.clang @@ -22,12 +22,12 @@ else CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) endif # CROSS_COMPILE -ifeq ($(LLVM_IAS),1) -CLANG_FLAGS += -integrated-as -else +ifeq ($(LLVM_IAS),0) CLANG_FLAGS += -no-integrated-as GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit)) CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE)) +else +CLANG_FLAGS += -integrated-as endif CLANG_FLAGS += -Werror=unknown-warning-option KBUILD_CFLAGS += $(CLANG_FLAGS) |