Undefined symbols for architecture armv7:
"std::__1::basic_string, std::__1::allocator >::basic_string(std::__1::basic_string, std::__1::allocator > const&)", referenced from:
cv::Exception::Exception(int, std::__1::basic_string, std::__1::allocator > const&, std::__1::basic_string, std::__1::allocator > const&, std::__1::basic_string, std::__1::allocator > const&, int) in opencv2(system.o)
cv::Exception::Exception(cv::Exception const&) in opencv2(system.o)
"std::__1::basic_string, std::__1::allocator >::~basic_string()", referenced from:
cv::Mat::create(int, int const*, int) in opencv2(matrix.o)
__ZN2cvL7setSizeERNS_3MatEiPKiPKmb in opencv2(matrix.o)
cv::Mat::Mat(cv::Mat const&, cv::Range const&, cv::Range const&) in opencv2(matrix.o)
cv::Mat::Mat(cv::Mat const&, cv::Range const*) in opencv2(matrix.o)
cv::Mat::diag(int) const in opencv2(matrix.o)
cv::Mat::Mat(_IplImage const*, bool) in opencv2(matrix.o)
cv::Mat::reserve(unsigned long) in opencv2(matrix.o)
...
"std::__1::basic_string, std::__1::allocator >::__init(char const*, unsigned long)", referenced from:
cv::Mat::create(int, int const*, int) in opencv2(matrix.o)
__ZN2cvL7setSizeERNS_3MatEiPKiPKmb in opencv2(matrix.o)
cv::Mat::Mat(cv::Mat const&, cv::Range const&, cv::Range const&) in opencv2(matrix.o)
cv::Mat::Mat(cv::Mat const&, cv::Range const*) in opencv2(matrix.o)
cv::Mat::diag(int) const in opencv2(matrix.o)
cv::Mat::Mat(_IplImage const*, bool) in opencv2(matrix.o)
cv::Mat::reserve(unsigned long) in opencv2(matrix.o)
...
"std::_1::_vector_base_common::__throw_length_error() const", referenced from:
std::_1::vector, std::__1::allocator > >::_append(unsigned long) in opencv2(matrix.o)
std::_1::vector, std::__1::allocator > >::_append(unsigned long) in opencv2(matrix.o)
std::_1::vector, std::__1::allocator > >::_append(unsigned long) in opencv2(matrix.o)
std::_1::vector, std::__1::allocator > >::_append(unsigned long) in opencv2(matrix.o)
std::_1::vector, std::__1::allocator > >::_append(unsigned long) in opencv2(matrix.o)
std::_1::vector, std::__1::allocator > >::_append(unsigned long) in opencv2(matrix.o)
std::_1::vector, std::__1::allocator > >::_append(unsigned long) in opencv2(matrix.o)
...
"std::__1::basic_string, std::__1::allocator >::operator=(std::__1::basic_string, std::__1::allocator > const&)", referenced from:
cv::Exception::formatMessage() in opencv2(system.o)
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Please Help me Out with this. I am not able to get read of those errors.