diff --git a/CMakeLists.txt b/CMakeLists.txt
index 566d4ad29d..fb2b306f65 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,6 +10,8 @@ if (NOT DEFINED TD_SOURCE_DIR)
   set( TD_SOURCE_DIR ${PROJECT_SOURCE_DIR} )
 endif()
 
+SET(TD_COMMUNITY_DIR ${PROJECT_SOURCE_DIR})
+
 set(TD_SUPPORT_DIR "${TD_SOURCE_DIR}/cmake")
 set(TD_CONTRIB_DIR "${TD_SOURCE_DIR}/contrib")