ndk-build -j 2 Not Building

~/Android/Sdk/ndk/21.0.6113669/ndk-build -j 2 TOP Level Path: /home/deep/Classifier/android-examples/dlib-face-recognition-android /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog/Android.mk:5: "Build miniglog.so/miniglog.a" /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog/Android.mk:8: /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog jni/jni_common/Android.mk:10: "Build jni_common" jni/jni_common/Android.mk:16: jni/jni_common "Won't build test's executable file" Android NDK: WARNING:jni/jni_common/Android.mk:jni_common: LOCAL_LDLIBS is always ignored for static libraries
TOP Level Path: /home/deep/Classifier/android-examples/dlib-face-recognition-android /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog/Android.mk:5: "Build miniglog.so/miniglog.a" /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog/Android.mk:8: /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog jni/jni_common/Android.mk:10: "Build jni_common" jni/jni_common/Android.mk:16: jni/jni_common "Won't build test's executable file" Android NDK: WARNING:jni/jni_common/Android.mk:jni_common: LOCAL_LDLIBS is always ignored for static libraries
TOP Level Path: /home/deep/Classifier/android-examples/dlib-face-recognition-android /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog/Android.mk:5: "Build miniglog.so/miniglog.a" /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog/Android.mk:8: /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog jni/jni_common/Android.mk:10: "Build jni_common" jni/jni_common/Android.mk:16: jni/jni_common "Won't build test's executable file" Android NDK: WARNING:jni/jni_common/Android.mk:jni_common: LOCAL_LDLIBS is always ignored for static libraries
TOP Level Path: /home/deep/Classifier/android-examples/dlib-face-recognition-android /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog/Android.mk:5: "Build miniglog.so/miniglog.a" /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog/Android.mk:8: /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/miniglog jni/jni_common/Android.mk:10: "Build jni_common" jni/jni_common/Android.mk:16: jni/jni_common "Won't build test's executable file" Android NDK: WARNING:jni/jni_common/Android.mk:jni_common: LOCAL_LDLIBS is always ignored for static libraries
[armeabi-v7a] Compile++ thumb: dlib <= source.cpp [armeabi-v7a] Compile++ thumb: jni_common <= yuv2rgb.cpp [armeabi-v7a] Compile++ thumb: jni_common <= jni_fileutils.cpp [armeabi-v7a] Compile++ thumb: jni_common <= rgb2yuv.cpp [armeabi-v7a] Compile++ thumb: jni_common <= jni_bitmap2mat.cpp [armeabi-v7a] Compile++ thumb: jni_common <= jni_utils.cpp [armeabi-v7a] Compile++ thumb: miniglog <= logging.cc [armeabi-v7a] Compile++ arm : android_dlib <= jni_face_rec.cpp [arm64-v8a] Compile++ : android_dlib <= jni_face_rec.cpp [arm64-v8a] Compile++ : jni_common <= yuv2rgb.cpp [arm64-v8a] Compile++ : jni_common <= jni_fileutils.cpp [arm64-v8a] Compile++ : jni_common <= rgb2yuv.cpp [arm64-v8a] Compile++ : jni_common <= jni_bitmap2mat.cpp [arm64-v8a] Compile++ : jni_common <= jni_utils.cpp [arm64-v8a] Compile++ : miniglog <= logging.cc [arm64-v8a] Compile++ : dlib <= source.cpp [x86] Compile++ : android_dlib <= jni_face_rec.cpp [x86] Compile++ : jni_common <= yuv2rgb.cpp [x86] Compile++ : jni_common <= jni_fileutils.cpp [x86] Compile++ : jni_common <= rgb2yuv.cpp [x86] Compile++ : jni_common <= jni_bitmap2mat.cpp [x86] Compile++ : jni_common <= jni_utils.cpp [x86] Compile++ : miniglog <= logging.cc [x86] Compile++ : dlib <= source.cpp [x86_64] Compile++ : android_dlib <= jni_face_rec.cpp [x86_64] Compile++ : jni_common <= yuv2rgb.cpp [x86_64] Compile++ : jni_common <= jni_fileutils.cpp [x86_64] Compile++ : jni_common <= rgb2yuv.cpp [x86_64] Compile++ : jni_common <= jni_bitmap2mat.cpp [x86_64] Compile++ : jni_common <= jni_utils.cpp [x86_64] Compile++ : miniglog <= logging.cc [armeabi-v7a] StaticLibrary : libdlib.a [armeabi-v7a] StaticLibrary : libjni_common.a [armeabi-v7a] StaticLibrary : libminiglog.a [arm64-v8a] StaticLibrary : libdlib.a [arm64-v8a] StaticLibrary : libjni_common.a [arm64-v8a] StaticLibrary : libminiglog.a [x86] StaticLibrary : libdlib.a [x86] StaticLibrary : libjni_common.a [x86] StaticLibrary : libminiglog.a [x86_64] StaticLibrary : libjni_common.a [x86_64] StaticLibrary : libminiglog.a [armeabi-v7a] SharedLibrary : libandroid_dlib.so /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(loadsave.cpp.o):loadsave.cpp:function std::vector<unsigned char, std::allocator >::_M_fill_insert(gnu_cxx::__normal_iterator<unsigned char*, std::vector<unsigned char, std::allocator > >, unsigned int, unsigned char const&): error: undefined reference to 'std::throw_length_error(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(loadsave.cpp.o):loadsave.cpp:function _GLOBALsub_I_loadsave.cpp: error: undefined reference to 'std::ios_base::Init::Init()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(loadsave.cpp.o):loadsave.cpp:function _GLOBALsub_I_loadsave.cpp: error: undefined reference to 'std::ios_base::Init::~Init()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(grfmt_exr.cpp.o):grfmt_exr.cpp:function _GLOBAL__sub_I_grfmt_exr.cpp: error: undefined reference to 'std::ios_base::Init::Init()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(grfmt_exr.cpp.o):grfmt_exr.cpp:function _GLOBAL__sub_I_grfmt_exr.cpp: error: undefined reference to 'std::ios_base::Init::~Init()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(grfmt_jpeg.cpp.o):grfmt_jpeg.cpp:function cv::JpegDecoder::getOrientation(): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(char const, unsigned int, std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(grfmt_jpeg.cpp.o):grfmt_jpeg.cpp:function cv::JpegDecoder::getOrientation(): error: undefined reference to 'std::string::_Rep::_M_destroy(std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(grfmt_jpeg.cpp.o):grfmt_jpeg.cpp:function cv::JpegDecoder::getOrientation(): error: undefined reference to 'std::string::_Rep::_M_destroy(std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(grfmt_jpeg.cpp.o):grfmt_jpeg.cpp:function cv::JpegDecoder::getOrientation(): error: undefined reference to 'std::string::_Rep::_M_dispose(std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(grfmt_jpeg.cpp.o):grfmt_jpeg.cpp:function cv::JpegDecoder::getOrientation(): error: undefined reference to 'std::string::_Rep::_S_empty_rep_storage' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifEntry_t::ExifEntry_t(): error: undefined reference to 'std::string::_Rep::_S_empty_rep_storage' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifReader::ExifReader(std::string): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifEntry_t::~ExifEntry_t(): error: undefined reference to 'std::string::_Rep::_M_destroy(std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifEntry_t::~ExifEntry_t(): error: undefined reference to 'std::string::_Rep::_S_empty_rep_storage' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifEntry_t::ExifEntry_t(cv::ExifEntry_t const&): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifReader::getString(unsigned int) const: error: undefined reference to 'std::string::_Rep::_S_create(unsigned int, unsigned int, std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifReader::getString(unsigned int) const: error: undefined reference to 'std::string::_Rep::_S_empty_rep_storage' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifReader::getTag(cv::ExifTagName): error: undefined reference to 'std::string::assign(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function std::_Rb_tree<int, std::pair<int const, cv::ExifEntry_t>, std::_Select1st<std::pair<int const, cv::ExifEntry_t> >, std::less, std::allocator<std::pair<int const, cv::ExifEntry_t> > >::_M_erase(std::_Rb_tree_node<std::pair<int const, cv::ExifEntry_t> >): error: undefined reference to 'std::string::_Rep::_M_destroy(std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function std::_Rb_tree<int, std::pair<int const, cv::ExifEntry_t>, std::_Select1st<std::pair<int const, cv::ExifEntry_t> >, std::less, std::allocator<std::pair<int const, cv::ExifEntry_t> > >::_M_insert_unique(std::pair<int const, cv::ExifEntry_t> const&): error: undefined reference to 'std::_Rb_tree_decrement(std::_Rb_tree_node_base)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function std::_Rb_tree<int, std::pair<int const, cv::ExifEntry_t>, std::_Select1st<std::pair<int const, cv::ExifEntry_t> >, std::less, std::allocator<std::pair<int const, cv::ExifEntry_t> > >::_M_insert_unique(std::pair<int const, cv::ExifEntry_t> const&): error: undefined reference to 'std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base, std::_Rb_tree_node_base, std::_Rb_tree_node_base&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifReader::parseExifEntry(unsigned int): error: undefined reference to 'std::string::assign(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifReader::parseExifEntry(unsigned int): error: undefined reference to 'std::string::assign(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifReader::parseExifEntry(unsigned int): error: undefined reference to 'std::string::assign(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifReader::parseExifEntry(unsigned int): error: undefined reference to 'std::string::_Rep::_M_dispose(std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifReader::parseExifEntry(unsigned int): error: undefined reference to 'std::string::_Rep::_M_dispose(std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_imgcodecs.a(jpeg_exif.cpp.o):jpeg_exif.cpp:function cv::ExifReader::parseExifEntry(unsigned int): error: undefined reference to 'std::string::_Rep::_M_dispose(std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(mathfuncs.cpp.o):mathfuncs.cpp:function _GLOBALsub_I_mathfuncs.cpp: error: undefined reference to 'std::ios_base::Init::Init()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(mathfuncs.cpp.o):mathfuncs.cpp:function _GLOBALsub_I_mathfuncs.cpp: error: undefined reference to 'std::ios_base::Init::~Init()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(matrix.cpp.o):matrix.cpp:function std::vector<unsigned char, std::allocator >::resize(unsigned int, unsigned char): error: undefined reference to 'std::throw_length_error(char const*)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(matrix.cpp.o):matrix.cpp:function std::vector<int, std::allocator >::resize(unsigned int, int): error: undefined reference to 'std::throw_length_error(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(matrix.cpp.o):matrix.cpp:function std::vector<cv::Vec<unsigned char, 2>, std::allocator<cv::Vec<unsigned char, 2> > >::_M_fill_insert(__gnu_cxx::__normal_iterator<cv::Vec<unsigned char, 2>, std::vector<cv::Vec<unsigned char, 2>, std::allocator<cv::Vec<unsigned char, 2> > > >, unsigned int, cv::Vec<unsigned char, 2> const&): error: undefined reference to 'std::throw_length_error(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::basic_ostream<char, std::char_traits >& std::operator<< <std::char_traits >(std::basic_ostream<char, std::char_traits >&, char const) [clone .part.39]: error: undefined reference to 'std::basic_ios<char, std::char_traits >::clear(std::_Ios_Iostate)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::basic_stringbuf<char, std::char_traits, std::allocator >::~basic_stringbuf(): error: undefined reference to 'std::locale::~locale()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::basic_stringbuf<char, std::char_traits, std::allocator >::~basic_stringbuf(): error: undefined reference to 'vtable for std::basic_stringbuf<char, std::char_traits, std::allocator >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::basic_stringbuf<char, std::char_traits, std::allocator >::~basic_stringbuf(): error: undefined reference to 'vtable for std::basic_streambuf<char, std::char_traits >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::basic_stringbuf<char, std::char_traits, std::allocator >::~basic_stringbuf(): error: undefined reference to 'std::locale::~locale()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::basic_stringbuf<char, std::char_traits, std::allocator >::~basic_stringbuf(): error: undefined reference to 'vtable for std::basic_stringbuf<char, std::char_traits, std::allocator >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::basic_stringbuf<char, std::char_traits, std::allocator >::~basic_stringbuf(): error: undefined reference to 'vtable for std::basic_streambuf<char, std::char_traits >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostringstream<char, std::char_traits, std::allocator >::basic_ostringstream(std::_Ios_Openmode)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::ostream_insert<char, std::char_traits >(std::basic_ostream<char, std::char_traits >&, char const, int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream& std::ostream::_M_insert(double)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::__ostream_insert<char, std::char_traits >(std::basic_ostream<char, std::char_traits >&, char const, int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::ostream_insert<char, std::char_traits >(std::basic_ostream<char, std::char_traits >&, char const*, int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream& std::ostream::_M_insert(double)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::ostream_insert<char, std::char_traits >(std::basic_ostream<char, std::char_traits >&, char const, int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_stringbuf<char, std::char_traits, std::allocator >::str() const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::locale::~locale()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ios_base::~ios_base()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream::operator<<(int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream::operator<<(int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::operator<< <std::char_traits >(std::basic_ostream<char, std::char_traits >&, char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream& std::ostream::_M_insert(double)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream& std::ostream::_M_insert(double)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::operator<< <std::char_traits >(std::basic_ostream<char, std::char_traits >&, char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostringstream<char, std::char_traits, std::allocator >::~basic_ostringstream()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_ostringstream<char, std::char_traits, std::allocator >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_stringbuf<char, std::char_traits, std::allocator >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_streambuf<char, std::char_traits >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'VTT for std::basic_ostringstream<char, std::char_traits, std::allocator >' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_ios<char, std::char_traits >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostringstream<char, std::char_traits, std::allocator >::basic_ostringstream(std::_Ios_Openmode)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_stringbuf<char, std::char_traits, std::allocator >::str() const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::locale::~locale()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ios_base::~ios_base()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream::operator<<(int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream::operator<<(int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::operator<< <std::char_traits >(std::basic_ostream<char, std::char_traits >&, char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::operator<< <std::char_traits >(std::basic_ostream<char, std::char_traits >&, char const*)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostringstream<char, std::char_traits, std::allocator >::~basic_ostringstream()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_ostringstream<char, std::char_traits, std::allocator >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_stringbuf<char, std::char_traits, std::allocator >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_streambuf<char, std::char_traits >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'VTT for std::basic_ostringstream<char, std::char_traits, std::allocator >' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_ios<char, std::char_traits >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostringstream<char, std::char_traits, std::allocator >::basic_ostringstream(std::_Ios_Openmode)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream& std::ostream::_M_insert(unsigned long)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream& std::ostream::_M_insert(unsigned long)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_stringbuf<char, std::char_traits, std::allocator >::str() const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ios_base::~ios_base()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream& std::ostream::_M_insert(unsigned long)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream& std::ostream::_M_insert(unsigned long)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostringstream<char, std::char_traits, std::allocator >::~basic_ostringstream()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_ostringstream<char, std::char_traits, std::allocator >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'VTT for std::basic_ostringstream<char, std::char_traits, std::allocator >' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_ios<char, std::char_traits >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostringstream<char, std::char_traits, std::allocator >::basic_ostringstream(std::_Ios_Openmode)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream::operator<<(short)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream::operator<<(short)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_stringbuf<char, std::char_traits, std::allocator >::str() const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ios_base::~ios_base()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream::operator<<(short)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::ostream::operator<<(short)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'std::basic_ostringstream<char, std::char_traits, std::allocator >::~basic_ostringstream()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_ostringstream<char, std::char_traits, std::allocator >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'VTT for std::basic_ostringstream<char, std::char_traits, std::allocator >' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::string cv::ocl::kerToStr(cv::Mat const&): error: undefined reference to 'vtable for std::basic_ios<char, std::char_traits >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::OpenCLBufferPoolBaseImpl<cv::ocl::OpenCLBufferPoolImpl, cv::ocl::CLBufferEntry, _cl_mem>::setMaxReservedSize(unsigned int): error: undefined reference to 'std::__detail::_List_node_base::_M_unhook()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::OpenCLBufferPoolBaseImpl<cv::ocl::OpenCLBufferPoolImpl, cv::ocl::CLBufferEntry, _cl_mem>::setMaxReservedSize(unsigned int): error: undefined reference to 'std::detail::_List_node_base::_M_unhook()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::OpenCLBufferPoolBaseImpl<cv::ocl::OpenCLBufferPoolImpl, cv::ocl::CLBufferEntry, _cl_mem>::release(_cl_mem): error: undefined reference to 'std::__detail::_List_node_base::_M_unhook()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::OpenCLBufferPoolBaseImpl<cv::ocl::OpenCLBufferPoolImpl, cv::ocl::CLBufferEntry, _cl_mem>::release(_cl_mem): error: undefined reference to 'std::detail::_List_node_base::_M_hook(std::detail::_List_node_base)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::OpenCLBufferPoolBaseImpl<cv::ocl::OpenCLBufferPoolImpl, cv::ocl::CLBufferEntry, _cl_mem>::release(_cl_mem*): error: undefined reference to 'std::__detail::_List_node_base::_M_unhook()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Kernel::set(int, cv::ocl::Image2D const&): error: undefined reference to 'std::detail::_List_node_base::_M_hook(std::detail::_List_node_base*)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::vector<std::string, std::allocator >::_M_insert_aux(gnu_cxx::normal_iterator<std::string*, std::vector<std::string, std::allocator > >, std::string const&): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::vector<std::string, std::allocator >::_M_insert_aux(__gnu_cxx::normal_iterator<std::string, std::vector<std::string, std::allocator > >, std::string const&): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::split(std::string const&, char, std::vector<std::string, std::allocator >&): error: undefined reference to 'std::ios_base::ios_base()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::split(std::string const&, char, std::vector<std::string, std::allocator >&): error: undefined reference to 'std::basic_ios<char, std::char_traits >::init(std::basic_streambuf<char, std::char_traits >)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::split(std::string const&, char, std::vector<std::string, std::allocator >&): error: undefined reference to 'std::locale::locale()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::split(std::string const&, char, std::vector<std::string, std::allocator >&): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(char const, unsigned int, std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::split(std::string const&, char, std::vector<std::string, std::allocator >&): error: undefined reference to 'std::basic_stringbuf<char, std::char_traits, std::allocator >::_M_sync(char, unsigned int, unsigned int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::split(std::string const&, char, std::vector<std::string, std::allocator >&): error: undefined reference to 'std::basic_ios<char, std::char_traits >::init(std::basic_streambuf<char, std::char_traits >)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::split(std::string const&, char, std::vector<std::string, std::allocator >&): error: undefined reference to 'std::basic_istream<char, std::char_traits >& std::getline<char, std::char_traits, std::allocator >(std::basic_istream<char, std::char_traits >&, std::basic_string<char, std::char_traits, std::allocator >&, char)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::split(std::string const&, char, std::vector<std::string, std::allocator >&): error: undefined reference to 'std::basic_istringstream<char, std::char_traits, std::allocator >::~basic_istringstream()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::split(std::string const&, char, std::vector<std::string, std::allocator >&): error: undefined reference to 'VTT for std::basic_istringstream<char, std::char_traits, std::allocator >' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::split(std::string const&, char, std::vector<std::string, std::allocator >&): error: undefined reference to 'vtable for std::basic_istringstream<char, std::char_traits, std::allocator >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::_Rb_tree<cv::ocl::Context::Impl::HashKey, std::pair<cv::ocl::Context::Impl::HashKey const, cv::ocl::Program>, std::_Select1st<std::pair<cv::ocl::Context::Impl::HashKey const, cv::ocl::Program> >, std::less, std::allocator<std::pair<cv::ocl::Context::Impl::HashKey const, cv::ocl::Program> > >::_M_insert_unique(std::pair<cv::ocl::Context::Impl::HashKey const, cv::ocl::Program> const&): error: undefined reference to 'std::_Rb_tree_decrement(std::_Rb_tree_node_base)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function std::_Rb_tree<cv::ocl::Context::Impl::HashKey, std::pair<cv::ocl::Context::Impl::HashKey const, cv::ocl::Program>, std::_Select1st<std::pair<cv::ocl::Context::Impl::HashKey const, cv::ocl::Program> >, std::less, std::allocator<std::pair<cv::ocl::Context::Impl::HashKey const, cv::ocl::Program> > >::_M_insert_unique(std::pair<cv::ocl::Context::Impl::HashKey const, cv::ocl::Program> const&): error: undefined reference to 'std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base, std::_Rb_tree_node_base, std::_Rb_tree_node_base&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function int cv::ocl::getStringInfo<int ()(_cl_platform_id, unsigned int, unsigned int, void, unsigned int), _cl_platform_id>(int ()(_cl_platform_id, unsigned int, unsigned int, void, unsigned int), _cl_platform_id, unsigned int, std::string&) [clone .constprop.272]: error: undefined reference to 'std::string::_M_mutate(unsigned int, unsigned int, unsigned int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function int cv::ocl::getStringInfo<int ()(_cl_platform_id, unsigned int, unsigned int, void, unsigned int), _cl_platform_id>(int ()(_cl_platform_id, unsigned int, unsigned int, void, unsigned int), _cl_platform_id, unsigned int, std::string&) [clone .constprop.272]: error: undefined reference to 'std::string::assign(char const, unsigned int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function int cv::ocl::getStringInfo<int ()(_cl_device_id, unsigned int, unsigned int, void, unsigned int), _cl_device_id>(int ()(_cl_device_id, unsigned int, unsigned int, void, unsigned int), _cl_device_id, unsigned int, std::string&) [clone .constprop.273]: error: undefined reference to 'std::string::_M_mutate(unsigned int, unsigned int, unsigned int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function int cv::ocl::getStringInfo<int ()(_cl_device_id, unsigned int, unsigned int, void, unsigned int), _cl_device_id>(int ()(_cl_device_id, unsigned int, unsigned int, void, unsigned int), _cl_device_id, unsigned int, std::string&) [clone .constprop.273]: error: undefined reference to 'std::string::assign(char const, unsigned int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::OpenCLBufferPoolBaseImpl<cv::ocl::OpenCLBufferPoolImpl, cv::ocl::CLBufferEntry, _cl_mem>::_findAndRemoveEntryFromReservedList(cv::ocl::CLBufferEntry&, unsigned int): error: undefined reference to 'std::__detail::_List_node_base::_M_hook(std::__detail::_List_node_base)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(char const, std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::string::find(char const, unsigned int, unsigned int) const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::string::_M_leak_hard()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::ostream::put(char)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::ostream::flush()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(char const, std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(char const, std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(char const, std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::string::_M_leak_hard()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::string::_M_leak_hard()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::string::_M_leak_hard()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::string::compare(char const) const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::string::compare(char const) const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::string::compare(char const) const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::string::find(char const, unsigned int, unsigned int) const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::string::compare(char const) const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::endl<char, std::char_traits >(std::basic_ostream<char, std::char_traits >&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::endl<char, std::char_traits >(std::basic_ostream<char, std::char_traits >&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::endl<char, std::char_traits >(std::basic_ostream<char, std::char_traits >&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::basic_ostream<char, std::char_traits >& std::endl<char, std::char_traits >(std::basic_ostream<char, std::char_traits >&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::cerr' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::ctype::_M_widen_init() const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::throw_bad_cast()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::Context::Impl::setDefault(): error: undefined reference to 'std::cerr' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function cv::ocl::OpenCLBufferPoolImpl::_allocateBufferEntry(cv::ocl::CLBufferEntry&, unsigned int): error: undefined reference to 'std::__detail::_List_node_base::_M_hook(std::detail::_List_node_base)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function _GLOBALsub_I_ocl.cpp: error: undefined reference to 'std::ios_base::Init::Init()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../libs/armeabi-v7a/libopencv_core.a(ocl.cpp.o):ocl.cpp:function _GLOBALsub_I_ocl.cpp: error: undefined reference to 'std::ios_base::Init::~Init()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(half.cpp.o):half.cpp:function operator>>(std::istream&, half&): error: undefined reference to 'std::istream& std::istream::_M_extract(float&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::operator[](char const): error: undefined reference to 'std::basic_stringstream<char, std::char_traits, std::allocator >::basic_stringstream(std::_Ios_Openmode)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::operator[](char const): error: undefined reference to 'std::basic_stringstream<char, std::char_traits, std::allocator >::~basic_stringstream()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::operator[](char const) const: error: undefined reference to 'std::basic_stringstream<char, std::char_traits, std::allocator >::basic_stringstream(std::_Ios_Openmode)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::operator[](char const) const: error: undefined reference to 'std::basic_stringstream<char, std::char_traits, std::allocator >::~basic_stringstream()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::channelsWithPrefix(char const, Imf::ChannelList::Iterator&, Imf::ChannelList::Iterator&): error: undefined reference to 'std::_Rb_tree_increment(std::_Rb_tree_node_base)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::channelsInLayer(std::string const&, Imf::ChannelList::Iterator&, Imf::ChannelList::Iterator&): error: undefined reference to 'std::string::append(unsigned int, char)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::channelsWithPrefix(char const, Imf::ChannelList::ConstIterator&, Imf::ChannelList::ConstIterator&) const: error: undefined reference to 'std::_Rb_tree_increment(std::_Rb_tree_node_base const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::channelsInLayer(std::string const&, Imf::ChannelList::ConstIterator&, Imf::ChannelList::ConstIterator&) const: error: undefined reference to 'std::string::append(unsigned int, char)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::operator==(Imf::ChannelList const&) const: error: undefined reference to 'std::_Rb_tree_increment(std::_Rb_tree_node_base const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::operator==(Imf::ChannelList const&) const: error: undefined reference to 'std::_Rb_tree_increment(std::_Rb_tree_node_base const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function std::_Rb_tree<Imf::Name, std::pair<Imf::Name const, Imf::Channel>, std::_Select1st<std::pair<Imf::Name const, Imf::Channel> >, std::less, std::allocator<std::pair<Imf::Name const, Imf::Channel> > >::_M_insertunique(std::_Rb_tree_const_iterator<std::pair<Imf::Name const, Imf::Channel> >, std::pair<Imf::Name const, Imf::Channel> const&): error: undefined reference to 'std::_Rb_tree_decrement(std::_Rb_tree_node_base)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function std::_Rb_tree<Imf::Name, std::pair<Imf::Name const, Imf::Channel>, std::_Select1st<std::pair<Imf::Name const, Imf::Channel> >, std::less, std::allocator<std::pair<Imf::Name const, Imf::Channel> > >::_M_insertunique(std::_Rb_tree_const_iterator<std::pair<Imf::Name const, Imf::Channel> >, std::pair<Imf::Name const, Imf::Channel> const&): error: undefined reference to 'std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base, std::_Rb_tree_node_base, std::_Rb_tree_node_base&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function std::_Rb_tree<Imf::Name, std::pair<Imf::Name const, Imf::Channel>, std::_Select1st<std::pair<Imf::Name const, Imf::Channel> >, std::less, std::allocator<std::pair<Imf::Name const, Imf::Channel> > >::_M_insertunique(std::_Rb_tree_const_iterator<std::pair<Imf::Name const, Imf::Channel> >, std::pair<Imf::Name const, Imf::Channel> const&): error: undefined reference to 'std::_Rb_tree_increment(std::_Rb_tree_node_base)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function std::_Rb_tree<Imf::Name, std::pair<Imf::Name const, Imf::Channel>, std::_Select1st<std::pair<Imf::Name const, Imf::Channel> >, std::less, std::allocator<std::pair<Imf::Name const, Imf::Channel> > >::_M_insertunique(std::_Rb_tree_const_iterator<std::pair<Imf::Name const, Imf::Channel> >, std::pair<Imf::Name const, Imf::Channel> const&): error: undefined reference to 'std::_Rb_tree_decrement(std::_Rb_tree_node_base)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::insert(char const, Imf::Channel const&): error: undefined reference to 'std::basic_stringstream<char, std::char_traits, std::allocator >::basic_stringstream(std::_Ios_Openmode)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::insert(char const, Imf::Channel const&): error: undefined reference to 'std::basic_stringstream<char, std::char_traits, std::allocator >::~basic_stringstream()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function std::_Rb_tree<std::string, std::string, std::_Identity, std::less, std::allocator >::_Minsert(std::_Rb_tree_node_base, std::_Rb_tree_node_base, std::string const&): error: undefined reference to 'std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base, std::_Rb_tree_node_base, std::_Rb_tree_node_base&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::layers(std::set<std::string, std::less, std::allocator >&) const: error: undefined reference to 'std::string::rfind(char, unsigned int) const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::layers(std::set<std::string, std::less, std::allocator >&) const: error: undefined reference to 'std::string::_M_mutate(unsigned int, unsigned int, unsigned int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::layers(std::set<std::string, std::less, std::allocator >&) const: error: undefined reference to 'std::_Rb_tree_increment(std::_Rb_tree_node_base const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfChannelList.cpp.o):ImfChannelList.cpp:function Imf::ChannelList::layers(std::set<std::string, std::less, std::allocator >&) const: error: undefined reference to 'std::__throw_out_of_range(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfFrameBuffer.cpp.o):ImfFrameBuffer.cpp:function Imf::FrameBuffer::operator[](char const): error: undefined reference to 'std::basic_stringstream<char, std::char_traits, std::allocator >::basic_stringstream(std::_Ios_Openmode)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfFrameBuffer.cpp.o):ImfFrameBuffer.cpp:function Imf::FrameBuffer::operator[](char const): error: undefined reference to 'std::basic_stringstream<char, std::char_traits, std::allocator >::~basic_stringstream()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfFrameBuffer.cpp.o):ImfFrameBuffer.cpp:function std::_Rb_tree<Imf::Name, std::pair<Imf::Name const, Imf::Slice>, std::_Select1st<std::pair<Imf::Name const, Imf::Slice> >, std::less, std::allocator<std::pair<Imf::Name const, Imf::Slice> > >::_M_insertunique(std::_Rb_tree_const_iterator<std::pair<Imf::Name const, Imf::Slice> >, std::pair<Imf::Name const, Imf::Slice> const&): error: undefined reference to 'std::_Rb_tree_increment(std::_Rb_tree_node_base)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfHeader.cpp.o):ImfHeader.cpp:function std::basic_ostream<char, std::char_traits >& std::operator<< <std::char_traits >(std::basic_ostream<char, std::char_traits >&, char const) [clone .part.8]: error: undefined reference to 'std::basic_ios<char, std::char_traits >::clear(std::_Ios_Iostate)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfHeader.cpp.o):ImfHeader.cpp:function Imf::Header::~Header(): error: undefined reference to 'std::_Rb_tree_increment(std::_Rb_tree_node_base)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfOutputFile.cpp.o):ImfOutputFile.cpp:function Imf::(anonymous namespace)::LineBufferTask::execute(): error: undefined reference to 'std::string::assign(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfOutputFile.cpp.o):ImfOutputFile.cpp:function Imf::(anonymous namespace)::LineBufferTask::execute(): error: undefined reference to 'std::string::assign(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfOutputFile.cpp.o):ImfOutputFile.cpp:function Imf::OutputFile::setFrameBuffer(Imf::FrameBuffer const&): error: undefined reference to 'std::basic_ios<char, std::char_traits >::clear(std::_Ios_Iostate)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfOutputFile.cpp.o):ImfOutputFile.cpp:function Imf::OutputFile::setFrameBuffer(Imf::FrameBuffer const&): error: undefined reference to 'std::basic_ios<char, std::char_traits >::clear(std::_Ios_Iostate)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfScanLineInputFile.cpp.o):ImfScanLineInputFile.cpp:function Imf::(anonymous namespace)::LineBufferTask::execute(): error: undefined reference to 'std::string::assign(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfScanLineInputFile.cpp.o):ImfScanLineInputFile.cpp:function Imf::(anonymous namespace)::LineBufferTask::execute(): error: undefined reference to 'std::string::assign(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdIFStream::tellg(): error: undefined reference to 'std::istream::tellg()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOFStream::tellp(): error: undefined reference to 'std::ostream::tellp()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOSStream::tellp(): error: undefined reference to 'std::ostream::tellp()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOFStream::write(char const, int): error: undefined reference to 'std::ostream::write(char const, int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdIFStream::read(char, int): error: undefined reference to 'std::istream::read(char, int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdIFStream::seekg(unsigned long long): error: undefined reference to 'std::istream::seekg(std::fpos)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOSStream::seekp(unsigned long long): error: undefined reference to 'std::ostream::seekp(std::fpos)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOFStream::seekp(unsigned long long): error: undefined reference to 'std::ostream::seekp(std::fpos)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOSStream::write(char const, int): error: undefined reference to 'std::ostream::write(char const, int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdIFStream::StdIFStream(char const): error: undefined reference to 'std::ios_base::ios_base()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdIFStream::StdIFStream(char const): error: undefined reference to 'std::basic_ios<char, std::char_traits >::init(std::basic_streambuf<char, std::char_traits >)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdIFStream::StdIFStream(char const): error: undefined reference to 'std::basic_filebuf<char, std::char_traits >::basic_filebuf()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdIFStream::StdIFStream(char const): error: undefined reference to 'std::basic_ios<char, std::char_traits >::init(std::basic_streambuf<char, std::char_traits >)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdIFStream::StdIFStream(char const): error: undefined reference to 'std::basic_filebuf<char, std::char_traits >::open(char const, std::_Ios_Openmode)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdIFStream::StdIFStream(char const): error: undefined reference to 'std::basic_filebuf<char, std::char_traits >::~basic_filebuf()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdIFStream::StdIFStream(char const): error: undefined reference to 'VTT for std::basic_ifstream<char, std::char_traits >' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdIFStream::StdIFStream(char const): error: undefined reference to 'vtable for std::basic_ifstream<char, std::char_traits >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOFStream::StdOFStream(char const): error: undefined reference to 'std::ios_base::ios_base()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOFStream::StdOFStream(char const): error: undefined reference to 'std::basic_filebuf<char, std::char_traits >::basic_filebuf()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOFStream::StdOFStream(char const): error: undefined reference to 'std::basic_filebuf<char, std::char_traits >::open(char const, std::_Ios_Openmode)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOFStream::StdOFStream(char const): error: undefined reference to 'std::basic_filebuf<char, std::char_traits >::~basic_filebuf()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOFStream::StdOFStream(char const): error: undefined reference to 'VTT for std::basic_ofstream<char, std::char_traits >' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOFStream::StdOFStream(char const): error: undefined reference to 'vtable for std::basic_ofstream<char, std::char_traits >' /home/deep/Android/Sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: the vtable symbol may be undefined because the class is missing its key function /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOSStream::StdOSStream(): error: undefined reference to 'std::ios_base::ios_base()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStdIO.cpp.o):ImfStdIO.cpp:function Imf::StdOSStream::StdOSStream(): error: undefined reference to 'std::locale::locale()' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStringAttribute.cpp.o):ImfStringAttribute.cpp:function Imf::TypedAttribute::readValueFrom(Imf::IStream&, int, int): error: undefined reference to 'std::string::resize(unsigned int, char)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfStringVectorAttribute.cpp.o):ImfStringVectorAttribute.cpp:function Imf::TypedAttribute<std::vector<std::string, std::allocator > >::readValueFrom(Imf::IStream&, int, int): error: undefined reference to 'std::string::resize(unsigned int, char)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexBaseExc.cpp.o):IexBaseExc.cpp:function Iex::BaseExc::BaseExc(char const): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(char const, std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexBaseExc.cpp.o):IexBaseExc.cpp:function Iex::BaseExc::BaseExc(std::string const&): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexBaseExc.cpp.o):IexBaseExc.cpp:function Iex::BaseExc::BaseExc(std::basic_stringstream<char, std::char_traits, std::allocator >&): error: undefined reference to 'std::string::_Rep::_S_create(unsigned int, unsigned int, std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexBaseExc.cpp.o):IexBaseExc.cpp:function Iex::BaseExc::BaseExc(std::basic_stringstream<char, std::char_traits, std::allocator >&): error: undefined reference to 'std::string::_Rep::_S_create(unsigned int, unsigned int, std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexBaseExc.cpp.o):IexBaseExc.cpp:function Iex::BaseExc::BaseExc(std::basic_stringstream<char, std::char_traits, std::allocator >&): error: undefined reference to 'std::__throw_logic_error(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexBaseExc.cpp.o):IexBaseExc.cpp:function Iex::BaseExc::BaseExc(std::basic_stringstream<char, std::char_traits, std::allocator >&): error: undefined reference to 'std::throw_logic_error(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexBaseExc.cpp.o):IexBaseExc.cpp:function Iex::BaseExc::BaseExc(Iex::BaseExc const&): error: undefined reference to 'std::basic_string<char, std::char_traits, std::allocator >::basic_string(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexBaseExc.cpp.o):IexBaseExc.cpp:function Iex::BaseExc::assign(std::basic_stringstream<char, std::char_traits, std::allocator >&): error: undefined reference to 'std::string::_Rep::_S_create(unsigned int, unsigned int, std::allocator const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexBaseExc.cpp.o):IexBaseExc.cpp:function Iex::BaseExc::assign(std::basic_stringstream<char, std::char_traits, std::allocator >&): error: undefined reference to 'std::__throw_logic_error(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexBaseExc.cpp.o):IexBaseExc.cpp:function Iex::BaseExc::assign(std::basic_stringstream<char, std::char_traits, std::allocator >&): error: undefined reference to 'std::throw_logic_error(char const)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexBaseExc.cpp.o):IexBaseExc.cpp:function Iex::BaseExc::append(std::basic_stringstream<char, std::char_traits, std::allocator >&): error: undefined reference to 'std::string::append(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexThrowErrnoExc.cpp.o):IexThrowErrnoExc.cpp:function Iex::throwErrnoExc(std::string const&, int): error: undefined reference to 'std::string::replace(unsigned int, unsigned int, char const, unsigned int)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(IexThrowErrnoExc.cpp.o):IexThrowErrnoExc.cpp:function Iex::throwErrnoExc(std::string const&, int): error: undefined reference to 'std::string::find(char const, unsigned int, unsigned int) const' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libIlmImf.a(ImfAttribute.cpp.o):ImfAttribute.cpp:function Imf::Attribute::unRegisterAttributeType(char const): error: undefined reference to 'std::_Rb_tree_rebalance_for_erase(std::_Rb_tree_node_base, std::_Rb_tree_node_base&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::handle_perror(int, char const): error: undefined reference to 'std::runtime_error::runtime_error(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::runtime_error::runtime_error(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::runtime_error::runtime_error(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::out_of_range::out_of_range(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::length_error::length_error(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::out_of_range::out_of_range(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::out_of_range::out_of_range(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::runtime_error::runtime_error(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::out_of_range::out_of_range(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::invalid_argument::invalid_argument(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::range_error::range_error(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::range_error::range_error(std::string const&)' /home/deep/Classifier/android-examples/dlib-face-recognition-android/third_party/opencv/jni/../3rdparty/libs/armeabi-v7a/libtbb.a(tbb_misc.cpp.o):tbb_misc.cpp:function tbb::internal::throw_exception_v4(tbb::internal::exception_id): error: undefined reference to 'std::invalid_argument::invalid_argument(std::string const&)' clang++: error: linker command failed with exit code 1 (use -v to see invocation) make: [/home/deep/Android/Sdk/ndk/21.0.6113669/build/core/build-binary.mk:726: obj/local/armeabi-v7a/libandroid_dlib.so] Error 1 make: Waiting for unfinished jobs.... [x86_64] Compile++ : dlib <= source.cpp

gv22ga / dlib-face-recognition-android

ndk-build -j 2 Not Building #19