ubuntu install glog and gflags

install glog

1. Get the source code and change to it. e.g. cloning with git:

git clone git@github.com:google/glog.git
cd glog

1. Run CMake to configure the build tree.

cmake -H. -Bbuild -G "Unix Makefiles"

note: To get the list of available generators (e.g. Visual Studio), use -G ""

1. Afterwards, generated files can be used to compile the project.

cmake --build build

1. Test the build software (optional).

cmake --build build --target test

1. Install the built files (optional).

cmake --build build --target install

install gflags

download gflags

    git clone https://github.com/gflags/gflags

compile & install 进入源码目录（即gflags文件夹）

cmake . 
make -j 24
sudo make install