Allow to remove local changes in external git projects

before getting updates from the external repository.


git-svn-id: https://subversion.gsi.de/cbmsoft/cbmroot/trunk@13978 5a1b234a-d7ce-0410-9a93-fd649a8fa65c

cmake/modules/CbmMacros.cmake

@@ -120,7 +120,7 @@ EndMacro(Gen_Exe_Script)
 
 function(download_project_if_needed)
   include(DownloadProject)
-  set(oneValueArgs PROJECT GIT_REPOSITORY GIT_TAG SOURCE_DIR TEST_FILE)
+  set(oneValueArgs PROJECT GIT_REPOSITORY GIT_TAG GIT_STASH SOURCE_DIR TEST_FILE)
   cmake_parse_arguments(MY "" "${oneValueArgs}"
                        "" ${ARGN} )
 
@@ -139,6 +139,10 @@ function(download_project_if_needed)
                     OUTPUT_STRIP_TRAILING_WHITESPACE
                    )
     If(NOT ${MY_GIT_TAG} STREQUAL ${CURRENT_SPADIC_HASH})
+      If(MY_GIT_STASH)
+        Execute_Process(COMMAND git stash  WORKING_DIRECTORY ${MY_SOURCE_DIR}) 
+        Execute_Process(COMMAND git stash clear  WORKING_DIRECTORY ${MY_SOURCE_DIR}) 
+      EndIF()
       download_project(PROJ            ${MY_PROJECT}
                        GIT_REPOSITORY  ${MY_GIT_REPOSITORY}
                        GIT_TAG         ${MY_GIT_TAG}