ubuntu18.04 install clang-10

Official link:
https://apt.llvm.org/

Add key:

wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add -

Add source:

sudo vim /etc/apt/source.list.d/llvm-10.list
sudo apt update

installation:

sudo apt install clang-10
# 安装 AST.h 等头文件
sudo apt install libclang-10-dev

Configure as the default clang

sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-10 10000
sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-10 10000
sudo update-alternatives --install /usr/bin/llvm-config llvm-config /usr/bin/llvm-config-10 10000