我在SDK中手动添加Xlog，编译能成功。但是将自己的SDK放入进Demo中就遇到了这样的问题，该怎么解决呢

[zhaodusheng]

ld: Undefined symbols:
mars::xlog::appender_open(mars::xlog::XLogConfig const&), referenced from:
-[JRXlogManager initXlog:pathName:] in DotfSDK19
mars::xlog::appender_close(), referenced from:
-[JRXlogManager closeXlog] in DotfSDK19
mars::xlog::appender_set_console_log(bool), referenced from:
-[JRXlogManager initXlog:pathName:] in DotfSDK19
_xlogger_SetLevel, referenced from:
-[JRXlogManager initXlog:pathName:] in DotfSDK19
clang: error: linker command failed with exit code 1 (use -v to see invocation)