我曾尝试编译gstreamer ios教程＃3。我已经从我从git，主树检出的源代码构建了iOS SDK，然后当我尝试编译iOS 9.2时。我收到以下链接错误，我没有解释。非常感谢所有帮助。
Undefined symbols for architecture arm64:
"_gst_plugin_liveadder_register", referenced from:
_gst_ios_init in gst_ios_init.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)