https://www.jianshu.com/p/68b9d2682cdd
git clone https://github.com/google/googletest.git
brew gcc新版
https://wangxin1248.github.io/life/2019/06/mac-update-gcc.html
brew search gcc
brew install gcc@8
sudo vi ~/.bash_profile
alias gcc='gcc-8’
alias cc='gcc-8’
alias g++='g++-8’
alias c++='c++-8’
source ~/.bash_profile
https://my.oschina.net/u/4287712/blog/3629897
更改
vim ../CMakeLists.txt
添加
set(CMAKE_CXX_STANDARD 11)