From 83fd65ab610b0fc8018035eb0e38db98c858b212 Mon Sep 17 00:00:00 2001
From: "Juergen E. Fischer" <jef@norbit.de>
Date: Wed, 30 Sep 2015 13:39:52 +0200
Subject: [PATCH] only update qgsexpression_texts.cpp if there are actual
 changes

---
 {resources => scripts}/process_function_template.py | 2 +-
 src/core/CMakeLists.txt                             | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)
 rename {resources => scripts}/process_function_template.py (98%)

diff --git a/resources/process_function_template.py b/scripts/process_function_template.py
similarity index 98%
rename from resources/process_function_template.py
rename to scripts/process_function_template.py
index 62ef43cbb9e..3e9ecc85867 100644
--- a/resources/process_function_template.py
+++ b/scripts/process_function_template.py
@@ -3,7 +3,7 @@ import os
 import json
 import glob
 
-cpp = open("src/core/qgsexpression_texts.cpp", "w")
+cpp = open(sys.argv[1], "w")
 cpp.write(
     "#include \"qgsexpression.h\"\n"
     "\n"
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 3f5690cd83e..1cc4a3b4162 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -332,7 +332,8 @@ STRING(REPLACE "$" "$$" JSON_HELP_FILES "${JSON_HELP_FILES}")
 STRING(REPLACE "\(" "\\(" JSON_HELP_FILES "${JSON_HELP_FILES}")
 STRING(REPLACE "\)" "\\)" JSON_HELP_FILES "${JSON_HELP_FILES}")
 ADD_CUSTOM_COMMAND(OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/qgsexpression_texts.cpp
-        COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/resources/process_function_template.py
+        COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/scripts/process_function_template.py ${CMAKE_CURRENT_BINARY_DIR}/qgsexpression_texts.cpp.temp
+        COMMAND ${CMAKE_COMMAND} -DSRC=${CMAKE_CURRENT_BINARY_DIR}/qgsexpression_texts.cpp.temp -DDST=${CMAKE_CURRENT_SOURCE_DIR}/qgsexpression_texts.cpp -P ${CMAKE_SOURCE_DIR}/cmake/CopyIfChanged.cmake
 	DEPENDS ${JSON_HELP_FILES}
 	WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
 )