From: Sedat Dilek <sedat.dilek@gmail.com>
To: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org, Andrii Nakryiko <andrii@kernel.org>,
Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>,
kernel-team@fb.com, Nick Desaulniers <ndesaulniers@google.com>
Subject: Re: [PATCH bpf-next 1/5] selftests: set CC to clang in lib.mk if LLVM is set
Date: Sun, 11 Apr 2021 12:22:41 +0200 [thread overview]
Message-ID: <CA+icZUVf9RPxBHZvTaEK0scNoPkF3pf__wWCy3K=TeacgBq98g@mail.gmail.com> (raw)
In-Reply-To: <20210410164930.769251-1-yhs@fb.com>
On Sat, Apr 10, 2021 at 6:49 PM Yonghong Song <yhs@fb.com> wrote:
>
> 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
>
Why not use include "include ../../../scripts/Makefile.include" here
and include CC and GNU or LLVM (bin)utils from there?
Should the CC line have a $(CROSS_COMPILE) for people doing cross-compilation?
CC := $(CROSS_COMPILE)clang
- Sedat -
> ifeq (0,$(MAKELEVEL))
> ifeq ($(OUTPUT),)
> --
> 2.30.2
>
next prev parent reply other threads:[~2021-04-11 10:23 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-10 16:49 [PATCH bpf-next 0/5] support build selftests/bpf with clang Yonghong Song
2021-04-10 16:49 ` [PATCH bpf-next 1/5] selftests: set CC to clang in lib.mk if LLVM is set Yonghong Song
2021-04-11 10:22 ` Sedat Dilek [this message]
2021-04-11 16:51 ` Yonghong Song
2021-04-11 17:10 ` Sedat Dilek
2021-04-10 16:49 ` [PATCH bpf-next 2/5] tools: allow proper CC/CXX/... override with LLVM=1 in Makefile.include Yonghong Song
2021-04-11 10:24 ` Sedat Dilek
2021-04-11 16:52 ` Yonghong Song
2021-04-10 16:49 ` [PATCH bpf-next 3/5] selftests/bpf: fix test_cpp compilation failure with clang Yonghong Song
2021-04-11 10:47 ` Sedat Dilek
2021-04-11 17:20 ` Yonghong Song
2021-04-11 17:31 ` Sedat Dilek
2021-04-11 19:08 ` Yonghong Song
2021-04-12 4:47 ` Sedat Dilek
2021-04-12 5:42 ` Yonghong Song
2021-04-12 6:06 ` Sedat Dilek
2021-04-12 14:15 ` Yonghong Song
2021-04-13 4:32 ` Andrii Nakryiko
2021-04-13 6:12 ` Yonghong Song
2021-04-13 17:50 ` Andrii Nakryiko
2021-04-10 16:49 ` [PATCH bpf-next 4/5] selftests/bpf: silence clang compilation warnings Yonghong Song
2021-04-11 11:12 ` Sedat Dilek
2021-04-11 17:40 ` Yonghong Song
2021-04-10 16:49 ` [PATCH bpf-next 5/5] bpftool: fix a clang compilation warning Yonghong Song
2021-04-11 11:05 ` Sedat Dilek
2021-04-11 17:24 ` Yonghong Song
2021-04-10 17:23 ` [PATCH bpf-next 0/5] support build selftests/bpf with clang Alexei Starovoitov
2021-04-10 17:38 ` Yonghong Song
2021-04-10 19:19 ` Sedat Dilek
2021-04-11 16:46 ` Yonghong Song
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