use ccache to accelerate compiling time in CMake

CMake > 3.4.0
define

-DCMAKE_CXX_COMPILER_LAUNCHER=ccache

or add below in CMakeLists.txt

set(CMAKE_CXX_COMPILER_LAUNCHER ccache)

https://stackoverflow.com/a/37828605

make sure your ccache is latest to avoid bugs like

https://stackoverflow.com/a/47097937