cmake_minimum_required( VERSION 2.4 ) get_target_property(ZIPDIR_EXE zipdir LOCATION) add_custom_command( OUTPUT ${ZDOOM_OUTPUT_DIR}/zdoom.pk3 COMMAND ${ZIPDIR_EXE} -udf ${ZDOOM_OUTPUT_DIR}/zdoom.pk3 ${CMAKE_CURRENT_SOURCE_DIR}/static DEPENDS zipdir ${CMAKE_CURRENT_SOURCE_DIR}/static ) add_custom_target( pk3 ALL DEPENDS ${ZDOOM_OUTPUT_DIR}/zdoom.pk3 )