CMakeLists: install Qt translations to macOS bundle

Closes #731.

CMakeLists.txt

@@ -301,8 +301,20 @@ endif(WIN32)
 # Packaging
 
 if(APPLE)
+ execute_process(
+ COMMAND "${${Qt}_BinDir}/qmake" -query QT_INSTALL_TRANSLATIONS
+ OUTPUT_VARIABLE _qt_translations_dir
+ OUTPUT_STRIP_TRAILING_WHITESPACE
+ COMMAND_ERROR_IS_FATAL ANY
+ )
  set(MACDEPLOYQT_ARGS ${PROJECT_NAME}.app -dmg -qmldir="${QML_DIR}" -verbose=${DEPLOY_VERBOSITY})
  add_custom_target(image
+ COMMAND mkdir ${PROJECT_NAME}.app/Contents/Translations
+ COMMAND ls "${_qt_translations_dir}"
+ COMMAND install "${_qt_translations_dir}/qtbase_*.qm"
+ "${_qt_translations_dir}/qtdeclarative_*.qm"
+ "${_qt_translations_dir}/qtmultimedia_*.qm"
+ ${PROJECT_NAME}.app/Contents/Translations
  COMMAND "${${Qt}_BinDir}/macdeployqt" ${MACDEPLOYQT_ARGS}
  DEPENDS ${PROJECT_NAME}
  WORKING_DIRECTORY ${PROJECT_BINARY_DIR}