find_library(LIBRARY_CAIRO cairo REQUIRED) find_library(LIBRARY_XCB xcb REQUIRED) add_library(CruPlatformGuiX11 Keyboard.cpp UiApplication.cpp Window.cpp ) target_link_libraries(CruPlatformGuiX11 PUBLIC CruPlatformGui CruPlatformGraphicsCairo ${LIBRARY_XCB} ${LIBRARY_CAIRO} )