OCAL. Fix for Bug #638844 (Errors printed to console if openclipart search fails).

[inkscape.git] / CMakeScripts / UseGlibMarshal.cmake

diff --git a/CMakeScripts/UseGlibMarshal.cmake b/CMakeScripts/UseGlibMarshal.cmake
index 74245cbdb783308adb15370a85b952b7d17a1655..63d501a5798696bf7b4b97a8a76e58bcf42b85b4 100644 (file)
--- a/CMakeScripts/UseGlibMarshal.cmake
+++ b/CMakeScripts/UseGlibMarshal.cmake
@@ -4,24 +4,33 @@
 #
 # And it defines the following variables:
 #  GLIB_MARSHAL_PREFIX - The name of the files
-#  GLIB_MARSHAL_LIST - File to Generate from
+#  GLIB_MARSHAL_FILE - File to Generate from (.list) and to generate to (.h and .cpp)
 #  GLIB_MARSHAL_OUTPUT_HEADER - Result of Generation
 #  GLIB_MARSHAL_OUTPUT_CPP - Result of Generation
 #  GLIB_MARSHAL_OUTPUT_LOCATION - Where we are putting the Output
 
 FIND_PROGRAM(GLIB_MARSHAL_EXECUTABLE NAMES glib-genmarshal PATHS /usr/local/bin )
 
-MACRO(GLIB_MARSHAL GLIB_MARSHAL_PREFIX GLIB_MARSHAL_LIST GLIB_MARSHAL_OUTPUT_LOCATION)
+MACRO(GLIB_MARSHAL GLIB_MARSHAL_PREFIX GLIB_MARSHAL_FILE GLIB_MARSHAL_OUTPUT_LOCATION)
     IF(GLIB_MARSHAL_EXECUTABLE)
-    SET(GLIB_MARSHAL_OUTPUT_TEMP)
-    SET(GLIB_MARSHAL_OUTPUT_EXTRA_LINE "#include \"${GLIB_MARSHAL_PREFIX}.h \" " )
+        SET(GLIB_MARSHAL_OUTPUT_EXTRA_LINE "#include \"${GLIB_MARSHAL_FILE}.h\" \n" )
+
+        MESSAGE(STATUS "Generating header and sourcefiles from ${GLIB_MARSHAL_FILE}.list (Glib-Marshal)")
+        EXECUTE_PROCESS(COMMAND ${GLIB_MARSHAL_EXECUTABLE} --prefix=${GLIB_MARSHAL_PREFIX} --header ${CMAKE_CURRENT_SOURCE_DIR}/${GLIB_MARSHAL_FILE}.list
+                                OUTPUT_VARIABLE GLIB_MARSHAL_OUTPUT_HEADER )
+        EXECUTE_PROCESS(COMMAND ${GLIB_MARSHAL_EXECUTABLE} --prefix=${GLIB_MARSHAL_PREFIX} --body ${CMAKE_CURRENT_SOURCE_DIR}/${GLIB_MARSHAL_FILE}.list
+                                OUTPUT_VARIABLE GLIB_MARSHAL_OUTPUT_CPP )
+
+        # check whether the generated file is the same as the existing one
+        FILE(READ ${CMAKE_CURRENT_BINARY_DIR}/${GLIB_MARSHAL_FILE}.h GLIB_MARSHAL_HEADER_OLD)
+        IF(NOT GLIB_MARSHAL_HEADER_OLD STREQUAL GLIB_MARSHAL_OUTPUT_HEADER)
+            MESSAGE(STATUS "${GLIB_MARSHAL_FILE}.h changed; overwriting")
+            FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${GLIB_MARSHAL_FILE}.h "${GLIB_MARSHAL_OUTPUT_HEADER}")
+            FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${GLIB_MARSHAL_FILE}.cpp "${GLIB_MARSHAL_OUTPUT_EXTRA_LINE}")
+            FILE(APPEND ${CMAKE_CURRENT_BINARY_DIR}/${GLIB_MARSHAL_FILE}.cpp "${GLIB_MARSHAL_OUTPUT_CPP}")
+        ELSE()
+            MESSAGE(STATUS "${GLIB_MARSHAL_FILE}.h unchanged")
+        ENDIF()
+    ENDIF()
+ENDMACRO()
 
-        EXECUTE_PROCESS(COMMAND "${GLIB_MARSHAL_EXECUTABLE} --prefix=${GLIB_MARSHAL_PREFIX} --header ${CMAKE_CURRENT_SOURCE_DIR}/${GLIB_MARSHAL_LIST}"
-                                OUTPUT_VARIABLE "${GLIB_MARSHAL_OUTPUT_HEADER}" )
-        EXECUTE_PROCESS(COMMAND "${GLIB_MARSHAL_EXECUTABLE} --prefix=${GLIB_MARSHAL_PREFIX} --body ${CMAKE_CURRENT_SOURCE_DIR}/${GLIB_MARSHAL_LIST}"
-                                OUTPUT_VARIABLE "${GLIB_MARSHAL_OUTPUT_TEMP}" )
-                        SET(GLIB_MARSHAL_OUTPUT_CPP "${GLIB_MARSHAL_OUTPUT_EXTRA_LINE}${GLIB_MARSHAL_OUTPUT_TEMP}")
-                        FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${GLIB_MARSHAL_PREFIX}.h "${GLIB_MARSHAL_OUTPUT_HEADER}")
-                        FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${GLIB_MARSHAL_PREFIX}.cpp "${GLIB_MARSHAL_OUTPUT_CPP}")
-    ENDIF(GLIB_MARSHAL_EXECUTABLE)
-ENDMACRO(GLIB_MARSHAL)