我从OpenCV获取了预编译的opencv2.framework，并将其添加到我的项目中。然而尝试编译项目时出现错误，例如：
Undefined symbols for architecture armv7:
"std::__1::__vector_base_common<true>::__throw_length_error() const", referenced from:
std::__1::vector<unsigned long, std::__1::allocator<unsigned long> >::__append(unsigned long) in opencv2(matrix.o)
std::__1::vector<cv::Vec<int, 128>, std::__1::allocator<cv::Vec<int, 128> > >::__append(unsigned long) in opencv2(matrix.o)
std::__1::vector<cv::Vec<int, 64>, std::__1::allocator<cv::Vec<int, 64> > >::__append(unsigned long) in opencv2(matrix.o)
std::__1::vector<cv::Vec<int, 32>, std::__1::allocator<cv::Vec<int, 32> > >::__append(unsigned long) in opencv2(matrix.o)
std::__1::vector<cv::Vec<int, 16>, std::__1::allocator<cv::Vec<int, 16> > >::__append(unsigned long) in opencv2(matrix.o)
std::__1::vector<cv::Vec<int, 12>, std::__1::allocator<cv::Vec<int, 12> > >::__append(unsigned long) in opencv2(matrix.o)
std::__1::vector<cv::Vec<int, 9>, std::__1::allocator<cv::Vec<int, 9> > >::__append(unsigned long) in opencv2(matrix.o)
...
"std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::basic_string(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
cv::Exception::Exception(int, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int) in opencv2(system.o)
cv::error(cv::Exception const&) in opencv2(system.o)
_cvRegisterModule in opencv2(system.o)
"std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::operator=(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
cv::Exception::formatMessage() in opencv2(system.o)
"_OBJC_CLASS_$_ALAssetsLibrary", referenced from:
objc-class-ref in opencv2(cap_ios_video_camera.o)
"std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__init(char const*, unsigned long)", referenced from:
cv::sum(cv::_InputArray const&) in opencv2(stat.o)
cv::countNonZero(cv::_InputArray const&) in opencv2(stat.o)
cv::mean(cv::_InputArray const&, cv::_InputArray const&) in opencv2(stat.o)
cv::meanStdDev(cv::_InputArray const&, cv::_OutputArray const&, cv::_OutputArray const&, cv::_InputArray const&) in opencv2(stat.o)
cv::minMaxIdx(cv::_InputArray const&, double*, double*, int*, int*, cv::_InputArray const&) in opencv2(stat.o)
cv::minMaxLoc(cv::_InputArray const&, double*, double*, cv::Point_<int>*, cv::Point_<int>*, cv::_InputArray const&) in opencv2(stat.o)
cv::norm(cv::_InputArray const&, int, cv::_InputArray const&) in opencv2(stat.o)
...
"std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_string()", referenced from:
cv::sum(cv::_InputArray const&) in opencv2(stat.o)
cv::countNonZero(cv::_InputArray const&) in opencv2(stat.o)
cv::mean(cv::_InputArray const&, cv::_InputArray const&) in opencv2(stat.o)
cv::meanStdDev(cv::_InputArray const&, cv::_OutputArray const&, cv::_OutputArray const&, cv::_InputArray const&) in opencv2(stat.o)
cv::minMaxIdx(cv::_InputArray const&, double*, double*, int*, int*, cv::_InputArray const&) in opencv2(stat.o)
cv::minMaxLoc(cv::_InputArray const&, double*, double*, cv::Point_<int>*, cv::Point_<int>*, cv::_InputArray const&) in opencv2(stat.o)
cv::norm(cv::_InputArray const&, int, cv::_InputArray const&) in opencv2(stat.o)
...
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
我已经将我的构建设置中的仅构建活动架构设置为No，但问题仍然存在。我需要做什么才能让OpenCV工作？ 我正在使用XCode 5，目标是iOS7。
我已经将
-lstdc++添加到链接器标志并将C ++编译器切换到libstdc ++，如此答案所述。我也尝试从源代码编译OpenCV，但结果出现了相同的错误。
无论我将部署目标设置为iOS6还是7，都会出现相同的问题。