From: Tiezhu Yang <yangtiezhu@loongson.cn>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Nathan Chancellor <natechancellor@gmail.com>,
Nick Desaulniers <ndesaulniers@google.com>
Cc: netdev@vger.kernel.org, bpf@vger.kernel.org,
clang-built-linux@googlegroups.com, linux-kernel@vger.kernel.org,
Xuefeng Li <lixuefeng@loongson.cn>
Subject: [PATCH bpf] samples/bpf: Update README.rst for manually compiling LLVM and clang
Date: Mon, 18 Jan 2021 16:53:02 +0800 [thread overview]
Message-ID: <1610959982-6420-1-git-send-email-yangtiezhu@loongson.cn> (raw)
In the current samples/bpf/README.rst, the url of llvm and clang git
may be out of date, they are unable to access:
$ git clone http://llvm.org/git/llvm.git
Cloning into 'llvm'...
fatal: unable to access 'http://llvm.org/git/llvm.git/': Maximum (20) redirects followed
$ git clone --depth 1 http://llvm.org/git/clang.git
Cloning into 'clang'...
fatal: unable to access 'http://llvm.org/git/clang.git/': Maximum (20) redirects followed
The Clang Getting Started page [1] might have more accurate information,
I verified the procedure and it is proved to be feasible, so we should
update it to reflect the reality.
[1] https://clang.llvm.org/get_started.html
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
---
samples/bpf/README.rst | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/samples/bpf/README.rst b/samples/bpf/README.rst
index dd34b2d..f606c08 100644
--- a/samples/bpf/README.rst
+++ b/samples/bpf/README.rst
@@ -65,11 +65,9 @@ To generate a smaller llc binary one can use::
Quick sniplet for manually compiling LLVM and clang
(build dependencies are cmake and gcc-c++)::
- $ git clone http://llvm.org/git/llvm.git
- $ cd llvm/tools
- $ git clone --depth 1 http://llvm.org/git/clang.git
- $ cd ..; mkdir build; cd build
- $ cmake .. -DLLVM_TARGETS_TO_BUILD="BPF;X86"
+ $ git clone https://github.com/llvm/llvm-project.git
+ $ cd llvm-project; mkdir build; cd build
+ $ cmake -DLLVM_ENABLE_PROJECTS=clang -DLLVM_TARGETS_TO_BUILD="BPF;X86" -G "Unix Makefiles" ../llvm
$ make -j $(getconf _NPROCESSORS_ONLN)
It is also possible to point make to the newly compiled 'llc' or
--
2.1.0
next reply other threads:[~2021-01-18 8:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-18 8:53 Tiezhu Yang [this message]
2021-01-18 18:01 ` [PATCH bpf] samples/bpf: Update README.rst for manually compiling LLVM and clang Yonghong Song
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