template <class T> std::string ToString(const T &e) { std::ostringstream s; s << e; return s.str(); } void WriteAppLog( const std::string &s) { std::ofstream file ("AppLog.txt", std::ios::app); file << "[" << Helper::DateTime().GetDateTimeString() << "]" << "\n...
operations.cpp:(.text+0xa8): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_assign(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >const&)' I googled thiserrorsand I found...
char*, CvFileNode*): error: undefined reference to'std::string::at(unsigned int)'C:/sdk/opencv-3.4.2-android-sdk/sdk/native/staticlibs/armeabi-v7a/libopencv_core.a(persistence.cpp.o):persistence.cpp:function
char*, CvFileNode*): error: undefined reference to'std::string::at(unsigned int)'C:/sdk/opencv-3.4.2-android-sdk/sdk/native/staticlibs/armeabi-v7a/libopencv_core.a(persistence.cpp.o):persistence.cpp:function
main.cpp:(.text+0x179): undefined reference to cv::imread(std::string const&, int)' main.cpp:(.text+0x567): undefined reference to cv::imshow(std::string const&, cv::_InputArray const&)' main.cpp:(.text+0x856): undefined reference to cv::imshow(std::string const&, cv::_InputAr...
||=== Build: Debug in shouldWorkNow (compiler: GNU GCC Compiler) ===| SFML-2.3.2/lib/libsfml-graphics.so||undefined reference to `std::__throw_out_of_range_fmt(char const*, ...)@GLIBCXX_3.4.20'| ||=== Build failed: 1 error(s), 0 warning(s) (0 minute(s), 0 second(s...
main.cpp:(.text._ZN3CLI6detail10check_pathEPKc[_ZN3CLI6detail10check_pathEPKc]+0x38): undefined reference to `std::filesystem::status(std::filesystem::__cxx11::path const&, std::error_code&)' /usr/bin/ld: CMakeFiles/demo.dir/main.cpp.o: in function `std::filesystem::__cxx11...
undefined reference to `std::basic_istream<char, std::char_traits<char> >& std::operator>><char, std::char_traits<char>, std::allocator<char> >(std::basic_istream<char, std::char_traits<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>...
`std::filesystem::is_regular_file(std::filesystem::path const&)': /opt/A23846B01V02A7805M22A_OL_open_sdk/sunsea_crosscompile/sysroots/x86_64-linux/arm-openwrt-linux-muslgnueabi/include/c++/8.4.0/bits/fs_ops.h:213: undefined reference to `std::filesystem::status(std::filesystem::...
release/widget.o:widget.cpp:(.text+0x2458):undefinedreferenceto`cv::CascadeClassifier::load(std::__cxx11::basic_string<char,std::char_traits<char>,std::allocator<char>>const&)' release/widget.o:widget.cpp:(.text+0x24f5):undefinedreferenceto`cv::CascadeClassifier::~CascadeClassifier()' ...