diff --git a/.gitignore b/.gitignore
index deeaa03c..9c452a72 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,5 @@ skynet
 3rd/lua/luac
 cservice
 luaclib
+*.so
+*.dSYM
diff --git a/Makefile b/Makefile
index 501171c8..35ecd4a1 100644
--- a/Makefile
+++ b/Makefile
@@ -66,7 +66,7 @@ $(LUA_CLIB_PATH)/netpack.so : lualib-src/lua-netpack.c | $(LUA_CLIB_PATH)
 	$(CC) $(CFLAGS) $(SHARED) $^ -Iskynet-src -o $@ 
 
 $(LUA_CLIB_PATH)/cjson.so : | $(LUA_CLIB_PATH)
-	cd 3rd/lua-cjson && $(MAKE) LUA_INCLUDE_DIR=$(LUA_INC) CC=$(CC) && cp cjson.so ../../$@
+	cd 3rd/lua-cjson && $(MAKE) LUA_INCLUDE_DIR=$(LUA_INC) CC=$(CC) CJSON_LDFLAGS="$(SHARED)" && cp cjson.so ../../$@
 
 $(LUA_CLIB_PATH)/clientsocket.so : lualib-src/lua-clientsocket.c | $(LUA_CLIB_PATH)
 	$(CC) $(CFLAGS) $(SHARED) $^ -o $@ -lpthread