方舟编译器工具openarkcompiler
# 安装Clang编译器并完成配置（用于编译方舟编译器代码）
下载**clang+llvm-8.0.0-x86_64-linux-gnu-ubuntu-16.04**
LLVM下载地址：http://releases.llvm.org/download.html#8.0.0
放置到`openarkcompiler/tools`目录，打开`openarkcompiler/build/config/BUILDCONFIG.gn`文件，将`GN_C_COMPILER`、`GN_CXX_COMPILER`和`GN_AR`三个变量配置为Clang编译器所在路径，例如：
```
GN_C_COMPILER = "${MAPLE_ROOT}/tools/clang_llvm-8.0.0-x86_64-linux-gnu-ubuntu-16.04/bin/clang"
GN_CXX_COMPILER = "${MAPLE_ROOT}/tools/clang_llvm-8.0.0-x86_64-linux-gnu-ubuntu-16.04/bin/clang++"
GN_AR = "${MAPLE_ROOT}/tools/clang_llvm-8.0.0-x86_64-linux-gnu-ubuntu-16.04/bin/llvm-ar"
```
