Script might well override a static map, but can't risk it not doing it, and preview completely failing. Better to just not try it for static maps. Some script cfg might help. Could also avoid unnnecessary preview regenerations even if the script was doing nothing at all.
set(SHAREPATH ${HEDGEWARS_DATADIR})
add_subdirectory(hedgewars/Data)
if(APPLE)
#CFBundleVersion is HEDGEWARS_REVISION
#CFBundleShortVersionString is HEDGEWARS_VERSION
#libav/ffmpeg always brings in VideoDecoderAcceleration, avaible only from 10.6.3
if(LIBAV_FOUND AND ${minimum_macosx_version} VERSION_EQUAL "10.6")
set(minimum_macosx_version "10.6.3")
endif()
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/Info.plist.in
${CMAKE_CURRENT_BINARY_DIR}/Info.plist)
#path here should be Hedgewars.app/Contents/MacOS
install(PROGRAMS "${CMAKE_CURRENT_BINARY_DIR}/Info.plist"
DESTINATION ../)
install(PROGRAMS "${CMAKE_CURRENT_SOURCE_DIR}/Icon.icns"
DESTINATION ../Resources/)
install(PROGRAMS "${CMAKE_CURRENT_SOURCE_DIR}/hwico.icns"
DESTINATION ../Resources/)
install(PROGRAMS "${CMAKE_CURRENT_SOURCE_DIR}/dsa_pub.pem"
DESTINATION ../Resources/)
elseif(UNIX)
install(PROGRAMS "${CMAKE_CURRENT_SOURCE_DIR}/hedgewars.appdata.xml"
DESTINATION ${CMAKE_INSTALL_PREFIX}/share/appdata/)
endif()