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| author |   Yonghong Song <yhs@fb.com> | 2021-04-13 08:34:19 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2021-04-15 16:50:21 -0700 |
| commit | f62700ce63a315b4607cc9e97aa15ea409a677b9 (patch) | |
| tree | e17fdf054a8ca6c68b1b4618b7b97241df82890c /tools/scripts | |
| parent | selftests: Set CC to clang in lib.mk if LLVM is set (diff) | |
| download | linux-dev-f62700ce63a315b4607cc9e97aa15ea409a677b9.tar.xz linux-dev-f62700ce63a315b4607cc9e97aa15ea409a677b9.zip | |
tools: Allow proper CC/CXX/... override with LLVM=1 in Makefile.include
selftests/bpf/Makefile includes tools/scripts/Makefile.include.
With the following command
make -j60 LLVM=1 LLVM_IAS=1 <=== compile kernel
make -j60 -C tools/testing/selftests/bpf LLVM=1 LLVM_IAS=1 V=1
some files are still compiled with gcc. This patch
fixed the case if CC/AR/LD/CXX/STRIP is allowed to be
overridden, it will be written to clang/llvm-ar/..., instead of
gcc binaries. The definition of CC_NO_CLANG is also relocated
to the place after the above CC is defined.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210413153419.3028165-1-yhs@fb.com
Diffstat (limited to 'tools/scripts')
| -rw-r--r-- | tools/scripts/Makefile.include | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include index a402f32a145c..91130648d8e6 100644 --- a/tools/scripts/Makefile.include +++ b/tools/scripts/Makefile.include @@ -39,8 +39,6 @@ EXTRA_WARNINGS += -Wundef EXTRA_WARNINGS += -Wwrite-strings EXTRA_WARNINGS += -Wformat -CC_NO_CLANG := $(shell $(CC) -dM -E -x c /dev/null | grep -Fq "__clang__"; echo $$?) - # Makefiles suck: This macro sets a default value of $(2) for the # variable named by $(1), unless the variable has been set by # environment or command line. This is necessary for CC and AR @@ -52,12 +50,22 @@ define allow-override $(eval $(1) = $(2))) endef +ifneq ($(LLVM),) +$(call allow-override,CC,clang) +$(call allow-override,AR,llvm-ar) +$(call allow-override,LD,ld.lld) +$(call allow-override,CXX,clang++) +$(call allow-override,STRIP,llvm-strip) +else # Allow setting various cross-compile vars or setting CROSS_COMPILE as a prefix. $(call allow-override,CC,$(CROSS_COMPILE)gcc) $(call allow-override,AR,$(CROSS_COMPILE)ar) $(call allow-override,LD,$(CROSS_COMPILE)ld) $(call allow-override,CXX,$(CROSS_COMPILE)g++) $(call allow-override,STRIP,$(CROSS_COMPILE)strip) +endif + +CC_NO_CLANG := $(shell $(CC) -dM -E -x c /dev/null | grep -Fq "__clang__"; echo $$?) ifneq ($(LLVM),) HOSTAR ?= llvm-ar |