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From: Yonghong Song <yhs@fb.com>
To: <bpf@vger.kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>,
	Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>,
	<kernel-team@fb.com>, Nick Desaulniers <ndesaulniers@google.com>,
	Sedat Dilek <sedat.dilek@gmail.com>
Subject: [PATCH bpf-next v3 1/5] selftests: set CC to clang in lib.mk if LLVM is set
Date: Tue, 13 Apr 2021 08:34:13 -0700	[thread overview]
Message-ID: <20210413153413.3027426-1-yhs@fb.com> (raw)
In-Reply-To: <20210413153408.3027270-1-yhs@fb.com>

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.

Cc: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
---
 tools/testing/selftests/lib.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index a5ce26d548e4..9a41d8bb9ff1 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -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),)
-- 
2.30.2


  reply	other threads:[~2021-04-13 15:34 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-13 15:34 [PATCH bpf-next v3 0/5] bpf: tools: support build selftests/bpf with clang Yonghong Song
2021-04-13 15:34 ` Yonghong Song [this message]
2021-04-13 22:04   ` [PATCH bpf-next v3 1/5] selftests: set CC to clang in lib.mk if LLVM is set Andrii Nakryiko
2021-04-13 22:13     ` Nick Desaulniers
2021-04-13 22:27       ` Yonghong Song
2021-04-13 22:34         ` Nick Desaulniers
2021-04-13 23:22         ` Andrii Nakryiko
2021-04-13 15:34 ` [PATCH bpf-next v3 2/5] tools: allow proper CC/CXX/... override with LLVM=1 in Makefile.include Yonghong Song
2021-04-13 15:34 ` [PATCH bpf-next v3 3/5] selftests/bpf: fix test_cpp compilation failure with clang Yonghong Song
2021-04-13 22:05   ` Andrii Nakryiko
2021-04-13 15:34 ` [PATCH bpf-next v3 4/5] selftests/bpf: silence clang compilation warnings Yonghong Song
2021-04-13 22:07   ` Andrii Nakryiko
2021-04-13 22:17     ` Nick Desaulniers
2021-04-13 22:37       ` Yonghong Song
2021-04-13 15:34 ` [PATCH bpf-next v3 5/5] bpftool: fix a clang compilation warning Yonghong Song
2021-04-13 19:36 ` [PATCH bpf-next v3 0/5] bpf: tools: support build selftests/bpf with clang Martin KaFai Lau
2021-04-16  0:21 ` Alexei Starovoitov
2021-04-16  3:59   ` Yonghong Song

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