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selftests: Set CC to clang in lib.mk if LLVM is set

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selftests/bpf/Makefile includes lib.mk. 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 lib.mk issue which sets CC to gcc in all cases.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210413153413.3027426-1-yhs@fb.com
This commit is contained in:
Yonghong Song 2021-04-13 08:34:13 -07:00 committed by Alexei Starovoitov
parent d3d93e34bd
commit 26e6dd1072
1 changed files with 4 additions and 0 deletions
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4
tools/testing/selftests/lib.mk
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@ -1,6 +1,10 @@
# This mimics the top-level Makefile. We do it explicitly here so that this
# Makefile can operate with or without the kbuild infrastructure.
ifneq ($(LLVM),)
CC := clang
else
CC := $(CROSS_COMPILE)gcc
endif
ifeq (0,$(MAKELEVEL))
ifeq ($(OUTPUT),)