cmake_minimum_required(VERSION 2.8) project(EmptyDepends) include(CTest) set(extra_dep) add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/qrc_my.cxx COMMAND ${CMAKE_COMMAND} -E touch "${CMAKE_BINARY_DIR}/qrc_my.cxx" DEPENDS "${extra_dep}" "${CMAKE_BINARY_DIR}/my.qrc") add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/my.qrc COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_BINARY_DIR}/my.qrc) add_library(qrc STATIC ${CMAKE_BINARY_DIR}/qrc_my.cxx)