njnja 安装

git clone git://github.com/ninja-build/ninja.git && cd ninja

安装re2c

wget  https://kojipkgs.fedoraproject.org//packages/re2c/1.1.1/3.fc31/src/re2c-1.1.1-3.fc31.src.rpm

./comfigure make&&make install

安装njnja

./configure.py --bootstrap，将njnja 复制到/usr/bin

ninja --version