Add CMake option WITH_STAGED_PLUGINS (ON by default)

- Core plugins remain available once staged (no need to re-build targets, unless source updated or build directory cleared)
- Once plugins are staged, setting WITH_STAGED_PLUGINS to OFF allows for much quicker subsequent builds
- PyQGIS utilities, console and installer are always staged, regardless of WITH_STAGED_PLUGINS

Author: dakcarto

CMakeLists.txt

@@ -76,6 +76,7 @@ IF (WITH_BINDINGS)
   # as otherwise user has to use PYTHONPATH environemnt variable to add
   # QGIS bindings to package search path
   SET (BINDINGS_GLOBAL_INSTALL FALSE CACHE BOOL "Install bindings to global python directory? (might need root)")
+  SET (WITH_STAGED_PLUGINS TRUE CACHE BOOL "Stage-install core Python plugins to run from build directory? (utilities, console and installer are always staged)")
   SET (WITH_PY_COMPILE FALSE CACHE BOOL "Determines whether Python modules in staged or installed locations are byte-compiled")
   # concatenate QScintilla2 API files
   SET (WITH_QSCIAPI TRUE CACHE BOOL "Determines whether the QScintilla2 API files will be updated and concatenated")

python/plugins/CMakeLists.txt

@@ -8,20 +8,22 @@ ENDIF(WITH_PY_COMPILE)
 
 MACRO (PLUGIN_INSTALL plugin subdir )
   INSTALL(FILES ${ARGN} DESTINATION ${QGIS_DATA_DIR}/python/plugins/${plugin}/${subdir})
-  STRING(REPLACE "/" "_" subdir_sane "${subdir}")
-  ADD_CUSTOM_TARGET(${plugin}_${subdir_sane}_stageinstall ALL DEPENDS ${ARGN})
-  IF(WITH_PY_COMPILE)
-    ADD_DEPENDENCIES(pycompile_staged ${plugin}_${subdir_sane}_stageinstall)
-  ENDIF(WITH_PY_COMPILE)
-  FOREACH(file ${ARGN})
-    ADD_CUSTOM_COMMAND(TARGET ${plugin}_${subdir_sane}_stageinstall
-      POST_BUILD
-      COMMAND ${CMAKE_COMMAND} -E make_directory ${PYTHON_OUTPUT_DIRECTORY}/plugins/${plugin}/${subdir}
-      COMMAND ${CMAKE_COMMAND} -E copy \"${file}\" ${PYTHON_OUTPUT_DIRECTORY}/plugins/${plugin}/${subdir}
-      WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
-      #COMMENT "copying ${file} to ${PYTHON_OUTPUT_DIRECTORY}/plugins/${plugin}/${subdir}"
-    )
-  ENDFOREACH(file)
+  IF(WITH_STAGED_PLUGINS OR "${plugin}" STREQUAL "plugin_installer")
+    STRING(REPLACE "/" "_" subdir_sane "${subdir}")
+    ADD_CUSTOM_TARGET(${plugin}_${subdir_sane}_stageinstall ALL DEPENDS ${ARGN})
+    IF(WITH_PY_COMPILE)
+      ADD_DEPENDENCIES(pycompile_staged ${plugin}_${subdir_sane}_stageinstall)
+    ENDIF(WITH_PY_COMPILE)
+    FOREACH(file ${ARGN})
+      ADD_CUSTOM_COMMAND(TARGET ${plugin}_${subdir_sane}_stageinstall
+        POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E make_directory ${PYTHON_OUTPUT_DIRECTORY}/plugins/${plugin}/${subdir}
+        COMMAND ${CMAKE_COMMAND} -E copy \"${file}\" ${PYTHON_OUTPUT_DIRECTORY}/plugins/${plugin}/${subdir}
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+        #COMMENT "copying ${file} to ${PYTHON_OUTPUT_DIRECTORY}/plugins/${plugin}/${subdir}"
+      )
+    ENDFOREACH(file)
+  ENDIF()
 ENDMACRO (PLUGIN_INSTALL)