include(FetchContent) FetchContent_Declare( ctre GIT_REPOSITORY "https://github.com/hanickadot/compile-time-regular-expressions" GIT_TAG v3.5 ) add_subdirectory(ctre) FetchContent_Declare( fmt GIT_REPOSITORY "https://github.com/fmtlib/fmt" GIT_TAG 8.1.1 ) add_subdirectory(fmt)