架構armv7（WebRTC）的未定義符號

Question

目前我正在使用Xcode 6 beta 7上的Swift構建iPad（iOS7）的WebRTC應用程序。我不斷收到這些錯誤。我添加了錯誤的庫嗎？它無法找到它們嗎？

下面是它的印刷錯誤：

Undefined symbols for architecture armv7: 
    "std::string::_Rep::_S_empty_rep_storage", referenced from: 
     +[RTCMediaConstraints constraintsFromArray:] in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::_M_insert_aux(__gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > >, webrtc::MediaConstraintsInterface::Constraint const&) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
    "std::string::assign(std::string const&)", referenced from: 
     std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::_M_insert_aux(__gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > >, webrtc::MediaConstraintsInterface::Constraint const&) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     webrtc::MediaConstraintsInterface::Constraint* std::__copy_backward<false, std::random_access_iterator_tag>::__copy_b<webrtc::MediaConstraintsInterface::Constraint*, webrtc::MediaConstraintsInterface::Constraint*>(webrtc::MediaConstraintsInterface::Constraint*, webrtc::MediaConstraintsInterface::Constraint*, webrtc::MediaConstraintsInterface::Constraint*) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     webrtc::MediaConstraintsInterface::Constraint* std::__copy<false, std::random_access_iterator_tag>::copy<webrtc::MediaConstraintsInterface::Constraint*, webrtc::MediaConstraintsInterface::Constraint*>(webrtc::MediaConstraintsInterface::Constraint*, webrtc::MediaConstraintsInterface::Constraint*, webrtc::MediaConstraintsInterface::Constraint*) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     webrtc::MediaConstraintsInterface::Constraint* std::__copy<false, std::random_access_iterator_tag>::copy<webrtc::MediaConstraintsInterface::Constraint const*, webrtc::MediaConstraintsInterface::Constraint*>(webrtc::MediaConstraintsInterface::Constraint const*, webrtc::MediaConstraintsInterface::Constraint const*, webrtc::MediaConstraintsInterface::Constraint*) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
    "std::string::_Rep::_M_destroy(std::allocator<char> const&)", referenced from: 
     +[RTCMediaConstraints constraintsFromArray:] in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::_M_insert_aux(__gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > >, webrtc::MediaConstraintsInterface::Constraint const&) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
    "std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&)", referenced from: 
     __gnu_cxx::new_allocator<webrtc::MediaConstraintsInterface::Constraint>::construct(webrtc::MediaConstraintsInterface::Constraint*, webrtc::MediaConstraintsInterface::Constraint const&) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::_M_insert_aux(__gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > >, webrtc::MediaConstraintsInterface::Constraint const&) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     webrtc::MediaConstraintsInterface::Constraint::Constraint(std::string const&, std::string) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::operator=(std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > const&) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     webrtc::MediaConstraintsInterface::Constraint* std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::_M_allocate_and_copy<__gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint const*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > > >(unsigned long, __gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint const*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > >, __gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint const*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > >) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::vector(std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > const&) in libjingle_peerconnection_objc.a(RTCMediaConstraintsNative.o) 
    "std::__throw_length_error(char const*)", referenced from: 
     std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::_M_insert_aux(__gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > >, webrtc::MediaConstraintsInterface::Constraint const&) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
    "std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()", referenced from: 
     __gnu_cxx::new_allocator<webrtc::MediaConstraintsInterface::Constraint>::construct(webrtc::MediaConstraintsInterface::Constraint*, webrtc::MediaConstraintsInterface::Constraint const&) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::_M_insert_aux(__gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > >, webrtc::MediaConstraintsInterface::Constraint const&) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     webrtc::MediaConstraintsInterface::Constraint::Constraint(std::string const&, std::string) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::~vector() in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::operator=(std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > const&) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
     webrtc::MediaConstraintsInterface::Constraint* std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> >::_M_allocate_and_copy<__gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint const*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > > >(unsigned long, __gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint const*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > >, __gnu_cxx::__normal_iterator<webrtc::MediaConstraintsInterface::Constraint const*, std::vector<webrtc::MediaConstraintsInterface::Constraint, std::allocator<webrtc::MediaConstraintsInterface::Constraint> > >) in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
    "std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)", referenced from: 
     +[RTCMediaConstraints constraintsFromArray:] in libjingle_peerconnection_objc.a(RTCMediaConstraints.o) 
ld: symbol(s) not found for architecture armv7 
clang: error: linker command failed with exit code 1 (use -v to see invocation) 

任何幫助是美好的。

Answer 1

我知道這是舊的，但是...您需要將您的應用程序的「生成設置」中的libstdC++。dylib更改爲libstdC++。6.dylib在「Link Binary with Libraries」下。討厭，但它對我有用！