include(FetchContent) set_mirror_url_with_hash( string_view_URL "https://github.com/martinmoene/string-view-lite/archive/refs/tags/v1.6.0.tar.gz" 2bdbfa2def2d460e3f78ee9846ece943) FetchContent_Declare(string_view URL ${string_view_URL} URL_HASH MD5=${string_view_URL_HASH}) FetchContent_MakeAvailable(string_view)