# sudo apt-get install clang ninja-build re2c cmake
# git clone git@github.com:MeekJeen/GN.git 
# cd GN
# python3 build/gen.py //本目录下生成out目录
# ninja -C out //生成gn
# cd examples/simple_build
# ../../out/gn gen out/default //编译生成.ninja文件
#  ../../out/gn args --list out/default //显示参数
# ninja -C out/default -v //ninja使用.ninja脚本编译生成可执行程序
# cd out/default
# ./hello
Hello, world