cmake: add gettext support

CMakeLists.txt

@@ -59,6 +59,7 @@ SET(FBVF "FISH-BUILD-VERSION-FILE")
 
 # Set up config.h
 INCLUDE(cmake/ConfigureChecks.cmake)
+INCLUDE(cmake/gettext.cmake)
 CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/config_cmake.h.in
                ${CMAKE_CURRENT_BINARY_DIR}/config.h)
 INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR})

cmake/ConfigureChecks.cmake

@@ -84,4 +84,3 @@ ENDIF()
 CHECK_TYPE_SIZE("wchar_t[8]" WCHAR_T_BITS LANGUAGE CXX)
 
 # Not checked yet: non-varargs tparm ("Solaris tparm kludge")
-# Not checked yet: gettext

cmake/gettext.cmake

@@ -0,0 +1,22 @@
+SET(languages de en fr nb nn pl pt_BR sv zh_CN)
+
+INCLUDE(FeatureSummary)
+
+OPTION(WITH_GETTEXT "translate messages if gettext is available" ON)
+IF(WITH_GETTEXT)
+  FIND_PACKAGE(Intl)
+  FIND_PACKAGE(Gettext)
+  IF(GETTEXT_FOUND)
+      SET(HAVE_GETTEXT 1)
+  ENDIF()
+ENDIF()
+ADD_FEATURE_INFO(gettext GETTEXT_FOUND "translate messages with gettext")
+
+# Define translations
+IF(GETTEXT_FOUND)
+  FOREACH(lang ${languages})
+    GETTEXT_PROCESS_PO_FILES(${lang} ALL
+                             INSTALL_DESTINATION ${CMAKE_INSTALL_FULL_LOCALEDIR}
+                             PO_FILES po/${lang}.po)
+  ENDFOREACH()
+ENDIF()

config_cmake.h.in

@@ -139,9 +139,6 @@
 /* Define to 1 if tparm accepts a fixed amount of paramters. */
 // #cmakedefine TPARM_SOLARIS_KLUDGE 1
 
-/* Perform string translations with gettext */
-// #cmakedefine USE_GETTEXT 1
-
 /* The size of wchar_t in bits. */
 #define WCHAR_T_BITS ${WCHAR_T_BITS}