list (APPEND thirdparty_src) list (APPEND thirdparty_lib) list (APPEND thirdparty_inc_public) list (APPEND thirdparty_inc) list (APPEND thirdparty_def) add_subdirectory(everest) set(thirdparty_src ${thirdparty_src} PARENT_SCOPE) set(thirdparty_lib ${thirdparty_lib} PARENT_SCOPE) set(thirdparty_inc_public ${thirdparty_inc_public} PARENT_SCOPE) set(thirdparty_inc ${thirdparty_inc} PARENT_SCOPE) set(thirdparty_def ${thirdparty_def} PARENT_SCOPE)