+# Avoid source_group on broken CMake version.
+# see issue #7074 #7075
+if (CMAKE_VERSION VERSION_GREATER 3.8.1)
+ source_group(TREE ${PROJECT_SOURCE_DIR} PREFIX "Source Files" FILES ${client_SRCS})
+ source_group(TREE ${PROJECT_SOURCE_DIR} PREFIX "Source Files" FILES ${server_SRCS})
+endif()
+