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我只是爲了我的Xcode項目添加PJSIP的庫和框架，如模擬器，設備和第三方，但是當我建立我的項目，它顯示錯誤：未定義的符號
Undefined symbols for architecture armv7:
"_pjmedia_get_video_format_info", referenced from:
_ios_factory_create_stream in libpjmedia-videodev-arm-apple-darwin9.a(ios_dev.o)
"_pjmedia_format_get_video_format_detail", referenced from:
_ios_factory_create_stream in libpjmedia-videodev-arm-apple-darwin9.a(ios_dev.o)
"_pjmedia_format_init_video", referenced from:
_ios_factory_init in libpjmedia-videodev-arm-apple-darwin9.a(ios_dev.o)
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
我試着谷歌的解決方案，但它似乎沒有幫助。請分享你的想法，我想我想念一些配置或圖書館。提前致謝。