拾遺：YouCompleteMe 前傳——編譯安裝 llvm + clang

http://llvm.org/docs/GettingStarted.html

1、下載安裝 cmake >=3.4.3

yum install gcc gcc-c++
curl -O http://www.cmake.org/files/v3.7/cmake-3.7.2.tar.gz
## git clone https://github.com/Kitware/CMake.git ##cmake 官網下載會很慢，能夠考慮從 gitbub 上拉取源碼
export PATH=$PATH:/opt/cmake/bin

tar -xf cmake-3.7.2.tar.gz
cd cmake-3.7.2    
./bootstrap --prefix=/opt/cmake
make && make install 

2、下載 llvm 源碼

cd /tmp
for x in "http://releases.llvm.org/4.0.0/llvm-4.0.0.src.tar.xz
    http://releases.llvm.org/4.0.0/cfe-4.0.0.src.tar.xz
    http://releases.llvm.org/4.0.0/compiler-rt-4.0.0.src.tar.xz
    http://releases.llvm.org/4.0.0/clang-tools-extra-4.0.0.src.tar.xz
    http://releases.llvm.org/4.0.0/libcxx-4.0.0.src.tar.xz
    http://releases.llvm.org/4.0.0/libcxxabi-4.0.0.src.tar.xz"; do
    wget $x
done

cd $HOME
mkdir llvm_source && cd llvm_source tar -xf /tmp/llvm-4.0.0.src.tar.xz
mv llvm-4.0.0.src llvm 
cd llvm/tools
tar -xf /tmp/cfe-4.0.0.src.tar.xz
mv cfe-4.0.0.src clang 
cd clang/tools
tar -xf /tmp/clang-tools-extra-4.0.0.src.tar.xz
mv clang-tools-extra-4.0.0.src clang-tools-extra 
cd ../../../projects tar -xf /tmp/compiler-rt-4.0.0.src.tar.xz
mv compiler-rt-4.0.0.src compiler-rt
tar -xf /tmp/libcxx-4.0.0.src.tar.xz
mv libcxx-4.0.0.src libcxx
tar -xf /tmp/libcxxabi-4.0.0.src.tar.xz
mv libcxxabi-4.0.0.src libcxxabi

3、編譯／安裝

mkdir llvm_build && cd llvm_build

cmake -G "Unix Makefiles" \
-D CMAKE_BUILD_TYPE=Release \
-D LLVM_TARGETS_TO_BUILD=host \
-D CMAKE_INSTALL_PREFIX=/opt/llvm \
. \
../llvm

make && make install

 

tips:

CentOS 6 升級 gcc-4.8

https://www.cnblogs.com/imzye/p/6216482.html