Extract translatable strings for planetary features into separate tem…

…plate

po/CMakeLists.txt

@@ -123,6 +123,7 @@ ENDMACRO(GETTEXT_CREATE_TRANSLATIONS )
 
 ADD_SUBDIRECTORY(stellarium) 
 ADD_SUBDIRECTORY(stellarium-skycultures) 
+ADD_SUBDIRECTORY(stellarium-planetary-features) 
 IF(USE_PLUGIN_REMOTECONTROL)
     ADD_SUBDIRECTORY(stellarium-remotecontrol)
 ENDIF()

po/stellarium-planetary-features/CMakeLists.txt

@@ -0,0 +1,27 @@
+FILE(GLOB poscfiles RELATIVE "${CMAKE_SOURCE_DIR}/po/stellarium-planetary-features/" "*.po")
+LIST(SORT poscfiles)
+STRING(REGEX REPLACE ".po" "" outposcfiles "${poscfiles}")
+
+GETTEXT_CREATE_TRANSLATIONS(stellarium-planetary-features DEFAULT_TARGET ${outposcfiles})
+
+# Discard this target if xgettext is not installed
+IF(${XGETTEXT_FOUND})
+     ADD_CUSTOM_TARGET(
+          generate-pot-stellarium-planetary-features
+          ${GETTEXT_XGETTEXT_EXECUTABLE}
+               -o stellarium-planetary-features.pot
+               --keyword=_:1,2c
+               --language=Python
+               --add-comments=TRANSLATORS:
+               --directory=${PROJECT_SOURCE_DIR}
+               --files-from=POTFILES.in
+               --copyright-holder=Stellarium's\ team
+               --from-code=utf-8
+          WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+          COMMENT "Generating stellarium-planetary-features.pot"
+          VERBATIM
+     )
+
+     # Generate this POT file when building the "generate-pot" target.
+     ADD_DEPENDENCIES(generate-pot generate-pot-stellarium-planetary-features)
+ENDIF()

po/stellarium-planetary-features/POTFILES.in

@@ -0,0 +1,2 @@
+# Proper names of planetary features
+data/nomenclature.fab