Activate dmg package generation with cpack

cmake/createLinuxPackages.cmake

@@ -32,9 +32,9 @@ function(createLinuxPackages)
 			set(LIBRARY_DIRECTORY "lib64" CACHE STRING "define the library directory (especially for Fedora with the wtf lib64)" FORCE)
 		endif(CREATE_RPM)
 
-		# if(CREATE_DMG)				#We should use DragNDrop or PackageMaker of osx
-		# 	set(CPACK_GENERATOR "DMG")
-		# endif(CREATE_DMG)
+		if(CREATE_DMG)				#We should use DragNDrop or PackageMaker of osx
+			set(CPACK_GENERATOR "DragNDrop")
+		endif(CREATE_DMG)
 
 		include(CPack)
 		# Has to be used :