gentoo-overlay/games-arcade/performous/files/performous-0.7.0-linguas.patch

--- lang/CMakeLists.txt
+++ lang/CMakeLists.txt
@@ -7,5 +7,11 @@
 	set(mofile ${CMAKE_CURRENT_BINARY_DIR}/${language}.mo)
 	add_custom_command(OUTPUT ${mofile} COMMAND ${Msgfmt_BIN} -v "${pofile}" -o ${mofile} MAIN_DEPENDENCY ${pofile} COMMENT "Building ${language} locale" VERBATIM)
 	add_custom_target(locale_${language} ALL DEPENDS ${mofile})  # Make sure the mofiles are always built
-	install(FILES ${mofile} DESTINATION ${LOCALE_DIR}/${language}/LC_MESSAGES RENAME ${CMAKE_PROJECT_NAME}.mo)
 endforeach(language)
+foreach(language $ENV{LINGUAS})
+	set(pofile ${CMAKE_CURRENT_SOURCE_DIR}/${language}.po)
+	if (EXISTS ${pofile})
+		set(mofile ${CMAKE_CURRENT_BINARY_DIR}/${language}.mo)
+		install(FILES ${mofile} DESTINATION ${LOCALE_DIR}/${language}/LC_MESSAGES RENAME ${CMAKE_PROJECT_NAME}.mo)
+	endif()
+endforeach(language)