Build fails linking OpenCV on AGX Orin

[kevin-chau]

Hello! Thank you for this great project. I'm trying to build from source on the Jetson Orin platform using the Install from Source instructions. After invoking catkin_make I'm running in to this error linking:

[ 92%] Linking CXX executable /home/moca/Desktop/ext_storage/catkin_ws/devel/lib/monocular_person_following/monocular_person_following_node
/usr/bin/ld: CMakeFiles/monocular_people_tracking_node.dir/src/monocular_people_tracking_node.cpp.o: in function `monocular_people_tracking::MonocularPeopleTrackingNode::visualize(cv::Mat const&, std::vector<std::shared_ptr<monocular_people_tracking::Observation>, std::allocator<std::shared_ptr<monocular_people_tracking::Observation> > > const&) const':
monocular_people_tracking_node.cpp:(.text._ZNK25monocular_people_tracking27MonocularPeopleTrackingNode9visualizeERKN2cv3MatERKSt6vectorISt10shared_ptrINS_11ObservationEESaIS8_EE[_ZNK25monocular_people_tracking27MonocularPeopleTrackingNode9visualizeERKN2cv3MatERKSt6vectorISt10shared_ptrINS_11ObservationEESaIS8_EE]+0x84): undefined reference to `cv::Mat::Mat(cv::Size_<int>, int, cv::Scalar_<double> const&)'
/usr/bin/ld: CMakeFiles/monocular_people_tracking_node.dir/src/monocular_people_tracking_node.cpp.o: in function `monocular_people_tracking::MonocularPeopleTrackingNode::poses_callback(boost::shared_ptr<tfpose_ros::Persons_<std::allocator<void> > const> const&)':
monocular_people_tracking_node.cpp:(.text._ZN25monocular_people_tracking27MonocularPeopleTrackingNode14poses_callbackERKN5boost10shared_ptrIKN10tfpose_ros8Persons_ISaIvEEEEE[_ZN25monocular_people_tracking27MonocularPeopleTrackingNode14poses_callbackERKN5boost10shared_ptrIKN10tfpose_ros8Persons_ISaIvEEEEE]+0x2c4): undefined reference to `cv::Mat::Mat(int, int, int, cv::Scalar_<double> const&)'
/usr/bin/ld: monocular_people_tracking_node.cpp:(.text._ZN25monocular_people_tracking27MonocularPeopleTrackingNode14poses_callbackERKN5boost10shared_ptrIKN10tfpose_ros8Persons_ISaIvEEEEE[_ZN25monocular_people_tracking27MonocularPeopleTrackingNode14poses_callbackERKN5boost10shared_ptrIKN10tfpose_ros8Persons_ISaIvEEEEE]+0x2e8): undefined reference to `cv::Mat::Mat()'
collect2: error: ld returned 1 exit status
make[2]: *** [monocular_people_tracking/CMakeFiles/monocular_people_tracking_node.dir/build.make:212: /home/moca/Desktop/ext_storage/catkin_ws/devel/lib/monocular_people_tracking/monocular_people_tracking_node] Error 1
make[1]: *** [CMakeFiles/Makefile2:2195: monocular_people_tracking/CMakeFiles/monocular_people_tracking_node.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
/usr/bin/ld: warning: libopencv_features2d.so.4.2, needed by /usr/lib/aarch64-linux-gnu/libopencv_calib3d.so.4.2.0, may conflict with libopencv_features2d.so.3.3
/usr/bin/ld: warning: libopencv_imgproc.so.3.3, needed by /usr/local/lib/libopencv_features2d.so.3.3.1, may conflict with libopencv_imgproc.so.4.2
/usr/bin/ld: warning: libopencv_core.so.3.3, needed by /usr/local/lib/libopencv_features2d.so.3.3.1, may conflict with libopencv_core.so.4.2
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `cvk::ChannelExtractorLUV::extract(cv::Mat const&, cv::Mat const&) const':
ccf_person_identification_test.cpp:(.text._ZNK3cvk19ChannelExtractorLUV7extractERKN2cv3MatES4_[_ZNK3cvk19ChannelExtractorLUV7extractERKN2cv3MatES4_]+0x3c): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `std::vector<cv::Mat, std::allocator<cv::Mat> >::vector(unsigned long, std::allocator<cv::Mat> const&)':
ccf_person_identification_test.cpp:(.text._ZNSt6vectorIN2cv3MatESaIS1_EEC2EmRKS2_[_ZNSt6vectorIN2cv3MatESaIS1_EEC5EmRKS2_]+0x68): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `cvk::ChannelExtractorGrads::extract(cv::Mat const&, cv::Mat const&) const':
ccf_person_identification_test.cpp:(.text._ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_[_ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_]+0x58): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: ccf_person_identification_test.cpp:(.text._ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_[_ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_]+0x60): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: ccf_person_identification_test.cpp:(.text._ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_[_ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_]+0x158): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o:ccf_person_identification_test.cpp:(.text._ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_[_ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_]+0x160): more undefined references to `cv::Mat::Mat()' follow
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `cvk::ChannelExtractorGrads::extract(cv::Mat const&, cv::Mat const&) const':
ccf_person_identification_test.cpp:(.text._ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_[_ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_]+0x230): undefined reference to `cv::Mat::Mat(int, int, int, cv::Scalar_<double> const&)'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `ccf_person_classifier::BodyClassifier::visualize() const':
ccf_person_identification_test.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x1cc): undefined reference to `cv::Mat::Mat(int, int, int, cv::Scalar_<double> const&)'
/usr/bin/ld: ccf_person_identification_test.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x20c): undefined reference to `cv::Mat::Mat(int, int, int)'
/usr/bin/ld: ccf_person_identification_test.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x4f4): undefined reference to `cv::Mat::Mat(int, int, int)'
/usr/bin/ld: ccf_person_identification_test.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x680): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: ccf_person_identification_test.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x6c0): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: ccf_person_identification_test.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x7b4): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `std::__detail::_Map_base<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, cv::Mat>, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, cv::Mat> >, std::__detail::_Select1st, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, false, true>, true>::operator[](std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&)':
ccf_person_identification_test.cpp:(.text._ZNSt8__detail9_Map_baseINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt4pairIKS6_N2cv3MatEESaISB_ENS_10_Select1stESt8equal_toIS6_ESt4hashIS6_ENS_18_Mod_range_hashingENS_20_Default_ranged_hashENS_20_Prime_rehash_policyENS_17_Hashtable_traitsILb1ELb0ELb1EEELb1EEixEOS6_[_ZNSt8__detail9_Map_baseINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt4pairIKS6_N2cv3MatEESaISB_ENS_10_Select1stESt8equal_toIS6_ESt4hashIS6_ENS_18_Mod_range_hashingENS_20_Default_ranged_hashENS_20_Prime_rehash_policyENS_17_Hashtable_traitsILb1ELb0ELb1EEELb1EEixEOS6_]+0xdc): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `std::vector<cv::Mat, std::allocator<cv::Mat> >::_M_default_append(unsigned long)':
ccf_person_identification_test.cpp:(.text._ZNSt6vectorIN2cv3MatESaIS1_EE17_M_default_appendEm[_ZNSt6vectorIN2cv3MatESaIS1_EE17_M_default_appendEm]+0x6c): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o:ccf_person_identification_test.cpp:(.text._ZNSt6vectorIN2cv3MatESaIS1_EE17_M_default_appendEm[_ZNSt6vectorIN2cv3MatESaIS1_EE17_M_default_appendEm]+0xe4): more undefined references to `cv::Mat::Mat()' follow
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `cvk::AhmedSubnet<10, 10>::AhmedSubnet(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool)':
ccf_person_identification_test.cpp:(.text._ZN3cvk11AhmedSubnetILi10ELi10EEC2ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEb[_ZN3cvk11AhmedSubnetILi10ELi10EEC5ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEb]+0x1c0): undefined reference to `cv::Mat::Mat(int, int, int)'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `cvk::CNNChannelExtractor<10, 10>::extract(cv::Mat const&, cv::Mat const&) const':
ccf_person_identification_test.cpp:(.text._ZNK3cvk19CNNChannelExtractorILi10ELi10EE7extractERKN2cv3MatES5_[_ZNK3cvk19CNNChannelExtractorILi10ELi10EE7extractERKN2cv3MatES5_]+0x3c): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `cvk::AhmedSubnet<20, 25>::forward(cv::Mat const&)':
ccf_person_identification_test.cpp:(.text._ZN3cvk11AhmedSubnetILi20ELi25EE7forwardERKN2cv3MatE[_ZN3cvk11AhmedSubnetILi20ELi25EE7forwardERKN2cv3MatE]+0x368): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `cvk::AhmedSubnet<20, 25>::AhmedSubnet(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool)':
ccf_person_identification_test.cpp:(.text._ZN3cvk11AhmedSubnetILi20ELi25EEC2ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEb[_ZN3cvk11AhmedSubnetILi20ELi25EEC5ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEb]+0x2a8): undefined reference to `cv::Mat::Mat(int, int, int)'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o: in function `main':
ccf_person_identification_test.cpp:(.text.startup+0x590): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: ccf_person_identification_test.cpp:(.text.startup+0x610): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: ccf_person_identification_test.cpp:(.text.startup+0x68c): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: ccf_person_identification_test.cpp:(.text.startup+0x72c): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: ccf_person_identification_test.cpp:(.text.startup+0x734): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/ccf_person_identification_test.dir/src/ccf_person_identification_test.cpp.o:ccf_person_identification_test.cpp:(.text.startup+0x754): more undefined references to `cv::Mat::Mat()' follow
collect2: error: ld returned 1 exit status
make[2]: *** [ccf_person_identification/CMakeFiles/ccf_person_identification_test.dir/build.make:206: /home/moca/Desktop/ext_storage/catkin_ws/devel/lib/ccf_person_identification/ccf_person_identification_test] Error 1
make[1]: *** [CMakeFiles/Makefile2:1687: ccf_person_identification/CMakeFiles/ccf_person_identification_test.dir/all] Error 2
/usr/bin/ld: warning: libopencv_imgcodecs.so.4.2, needed by /opt/ros/noetic/lib/libcv_bridge.so, may conflict with libopencv_imgcodecs.so.3.3
/usr/bin/ld: warning: libopencv_features2d.so.4.2, needed by /usr/lib/aarch64-linux-gnu/libopencv_calib3d.so.4.2.0, may conflict with libopencv_features2d.so.3.3
/usr/bin/ld: warning: libopencv_imgproc.so.3.3, needed by /usr/local/lib/libopencv_features2d.so.3.3.1, may conflict with libopencv_imgproc.so.4.2
/usr/bin/ld: warning: libopencv_core.so.3.3, needed by /usr/local/lib/libopencv_features2d.so.3.3.1, may conflict with libopencv_core.so.4.2
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `monocular_person_following::Context::visualize_body_features()':
context.cpp:(.text+0x1a48): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: context.cpp:(.text+0x1a84): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `monocular_person_following::Context::extract_features(cv::Mat const&, std::unordered_map<long, std::shared_ptr<monocular_person_following::Tracklet>, std::hash<long>, std::equal_to<long>, std::allocator<std::pair<long const, std::shared_ptr<monocular_person_following::Tracklet> > > >&)':
context.cpp:(.text+0x1bac): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: context.cpp:(.text+0x1bb4): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: context.cpp:(.text+0x1bd4): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o:context.cpp:(.text+0x1c6c): more undefined references to `cv::Mat::Mat()' follow
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `flann::serialization::SaveArchive::initBlock()':
context.cpp:(.text._ZN5flann13serialization11SaveArchive9initBlockEv[_ZN5flann13serialization11SaveArchive9initBlockEv]+0x50): undefined reference to `LZ4_resetStreamHC'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `flann::serialization::SaveArchive::flushBlock()':
context.cpp:(.text._ZN5flann13serialization11SaveArchive10flushBlockEv[_ZN5flann13serialization11SaveArchive10flushBlockEv]+0x48): undefined reference to `LZ4_compress_HC_continue'
/usr/bin/ld: context.cpp:(.text._ZN5flann13serialization11SaveArchive10flushBlockEv[_ZN5flann13serialization11SaveArchive10flushBlockEv]+0xd8): undefined reference to `LZ4_compress_HC_continue'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `flann::serialization::LoadArchive::decompressAndLoadV10(_IO_FILE*)':
context.cpp:(.text._ZN5flann13serialization11LoadArchive20decompressAndLoadV10EP8_IO_FILE[_ZN5flann13serialization11LoadArchive20decompressAndLoadV10EP8_IO_FILE]+0xc0): undefined reference to `LZ4_decompress_safe'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `flann::serialization::LoadArchive::loadBlock(char*, unsigned long, _IO_FILE*)':
context.cpp:(.text._ZN5flann13serialization11LoadArchive9loadBlockEPcmP8_IO_FILE[_ZN5flann13serialization11LoadArchive9loadBlockEPcmP8_IO_FILE]+0x58): undefined reference to `LZ4_decompress_safe_continue'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `flann::serialization::LoadArchive::initBlock(_IO_FILE*)':
context.cpp:(.text._ZN5flann13serialization11LoadArchive9initBlockEP8_IO_FILE[_ZN5flann13serialization11LoadArchive9initBlockEP8_IO_FILE]+0xac): undefined reference to `LZ4_setStreamDecode'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `cvk::ChannelExtractorLUV::extract(cv::Mat const&, cv::Mat const&) const':
context.cpp:(.text._ZNK3cvk19ChannelExtractorLUV7extractERKN2cv3MatES4_[_ZNK3cvk19ChannelExtractorLUV7extractERKN2cv3MatES4_]+0x3c): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `std::vector<cv::Mat, std::allocator<cv::Mat> >::vector(unsigned long, std::allocator<cv::Mat> const&)':
context.cpp:(.text._ZNSt6vectorIN2cv3MatESaIS1_EEC2EmRKS2_[_ZNSt6vectorIN2cv3MatESaIS1_EEC5EmRKS2_]+0x68): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `cvk::ChannelExtractorGrads::extract(cv::Mat const&, cv::Mat const&) const':
context.cpp:(.text._ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_[_ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_]+0x54): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: context.cpp:(.text._ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_[_ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_]+0x5c): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: context.cpp:(.text._ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_[_ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_]+0x158): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o:context.cpp:(.text._ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_[_ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_]+0x160): more undefined references to `cv::Mat::Mat()' follow
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `cvk::ChannelExtractorGrads::extract(cv::Mat const&, cv::Mat const&) const':
context.cpp:(.text._ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_[_ZNK3cvk21ChannelExtractorGrads7extractERKN2cv3MatES4_]+0x230): undefined reference to `cv::Mat::Mat(int, int, int, cv::Scalar_<double> const&)'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `ccf_person_classifier::BodyClassifier::visualize() const':
context.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x1cc): undefined reference to `cv::Mat::Mat(int, int, int, cv::Scalar_<double> const&)'
/usr/bin/ld: context.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x20c): undefined reference to `cv::Mat::Mat(int, int, int)'
/usr/bin/ld: context.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x4f4): undefined reference to `cv::Mat::Mat(int, int, int)'
/usr/bin/ld: context.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x680): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: context.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x6c0): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: context.cpp:(.text._ZNK21ccf_person_classifier14BodyClassifier9visualizeEv[_ZNK21ccf_person_classifier14BodyClassifier9visualizeEv]+0x7b4): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `std::__detail::_Map_base<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, cv::Mat>, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, cv::Mat> >, std::__detail::_Select1st, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, false, true>, true>::operator[](std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&)':
context.cpp:(.text._ZNSt8__detail9_Map_baseINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt4pairIKS6_N2cv3MatEESaISB_ENS_10_Select1stESt8equal_toIS6_ESt4hashIS6_ENS_18_Mod_range_hashingENS_20_Default_ranged_hashENS_20_Prime_rehash_policyENS_17_Hashtable_traitsILb1ELb0ELb1EEELb1EEixEOS6_[_ZNSt8__detail9_Map_baseINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt4pairIKS6_N2cv3MatEESaISB_ENS_10_Select1stESt8equal_toIS6_ESt4hashIS6_ENS_18_Mod_range_hashingENS_20_Default_ranged_hashENS_20_Prime_rehash_policyENS_17_Hashtable_traitsILb1ELb0ELb1EEELb1EEixEOS6_]+0xdc): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `std::vector<cv::Mat, std::allocator<cv::Mat> >::_M_default_append(unsigned long)':
context.cpp:(.text._ZNSt6vectorIN2cv3MatESaIS1_EE17_M_default_appendEm[_ZNSt6vectorIN2cv3MatESaIS1_EE17_M_default_appendEm]+0x6c): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o:context.cpp:(.text._ZNSt6vectorIN2cv3MatESaIS1_EE17_M_default_appendEm[_ZNSt6vectorIN2cv3MatESaIS1_EE17_M_default_appendEm]+0xe4): more undefined references to `cv::Mat::Mat()' follow
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `cvk::AhmedSubnet<10, 10>::AhmedSubnet(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool)':
context.cpp:(.text._ZN3cvk11AhmedSubnetILi10ELi10EEC2ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEb[_ZN3cvk11AhmedSubnetILi10ELi10EEC5ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEb]+0x1c0): undefined reference to `cv::Mat::Mat(int, int, int)'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `cvk::CNNChannelExtractor<10, 10>::extract(cv::Mat const&, cv::Mat const&) const':
context.cpp:(.text._ZNK3cvk19CNNChannelExtractorILi10ELi10EE7extractERKN2cv3MatES5_[_ZNK3cvk19CNNChannelExtractorILi10ELi10EE7extractERKN2cv3MatES5_]+0x3c): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `cvk::AhmedSubnet<20, 25>::forward(cv::Mat const&)':
context.cpp:(.text._ZN3cvk11AhmedSubnetILi20ELi25EE7forwardERKN2cv3MatE[_ZN3cvk11AhmedSubnetILi20ELi25EE7forwardERKN2cv3MatE]+0x368): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `cvk::AhmedSubnet<20, 25>::AhmedSubnet(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool)':
context.cpp:(.text._ZN3cvk11AhmedSubnetILi20ELi25EEC2ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEb[_ZN3cvk11AhmedSubnetILi20ELi25EEC5ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEb]+0x2a8): undefined reference to `cv::Mat::Mat(int, int, int)'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `cvk::CNNChannelExtractor<20, 25>::extract(cv::Mat const&, cv::Mat const&) const':
context.cpp:(.text._ZNK3cvk19CNNChannelExtractorILi20ELi25EE7extractERKN2cv3MatES5_[_ZNK3cvk19CNNChannelExtractorILi20ELi25EE7extractERKN2cv3MatES5_]+0x3c): undefined reference to `cv::Mat::Mat()'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `flann::LshIndex<flann::L2<float> >::saveIndex(_IO_FILE*)':
context.cpp:(.text._ZN5flann8LshIndexINS_2L2IfEEE9saveIndexEP8_IO_FILE[_ZN5flann8LshIndexINS_2L2IfEEE9saveIndexEP8_IO_FILE]+0x43c): undefined reference to `LZ4_compress_HC_continue'
/usr/bin/ld: context.cpp:(.text._ZN5flann8LshIndexINS_2L2IfEEE9saveIndexEP8_IO_FILE[_ZN5flann8LshIndexINS_2L2IfEEE9saveIndexEP8_IO_FILE]+0x5a4): undefined reference to `LZ4_compress_HC_continue'
/usr/bin/ld: context.cpp:(.text._ZN5flann8LshIndexINS_2L2IfEEE9saveIndexEP8_IO_FILE[_ZN5flann8LshIndexINS_2L2IfEEE9saveIndexEP8_IO_FILE]+0x6d4): undefined reference to `LZ4_compress_HC_continue'
/usr/bin/ld: context.cpp:(.text._ZN5flann8LshIndexINS_2L2IfEEE9saveIndexEP8_IO_FILE[_ZN5flann8LshIndexINS_2L2IfEEE9saveIndexEP8_IO_FILE]+0x790): undefined reference to `LZ4_compress_HC_continue'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `void flann::serialization::Serializer<std::vector<unsigned long, std::allocator<unsigned long> > >::load<flann::serialization::LoadArchive>(flann::serialization::LoadArchive&, std::vector<unsigned long, std::allocator<unsigned long> >&)':
context.cpp:(.text._ZN5flann13serialization10SerializerISt6vectorImSaImEEE4loadINS0_11LoadArchiveEEEvRT_RS4_[_ZN5flann13serialization10SerializerISt6vectorImSaImEEE4loadINS0_11LoadArchiveEEEvRT_RS4_]+0x118): undefined reference to `LZ4_decompress_safe_continue'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `void flann::NNIndex<flann::L2<float> >::serialize<flann::serialization::LoadArchive>(flann::serialization::LoadArchive&)':
context.cpp:(.text._ZN5flann7NNIndexINS_2L2IfEEE9serializeINS_13serialization11LoadArchiveEEEvRT_[_ZN5flann7NNIndexINS_2L2IfEEE9serializeINS_13serialization11LoadArchiveEEEvRT_]+0x2d8): undefined reference to `LZ4_decompress_safe_continue'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o: in function `void flann::LshIndex<flann::L2<float> >::serialize<flann::serialization::LoadArchive>(flann::serialization::LoadArchive&)':
context.cpp:(.text._ZN5flann8LshIndexINS_2L2IfEEE9serializeINS_13serialization11LoadArchiveEEEvRT_[_ZN5flann8LshIndexINS_2L2IfEEE9serializeINS_13serialization11LoadArchiveEEEvRT_]+0x388): undefined reference to `LZ4_decompress_safe_continue'
/usr/bin/ld: context.cpp:(.text._ZN5flann8LshIndexINS_2L2IfEEE9serializeINS_13serialization11LoadArchiveEEEvRT_[_ZN5flann8LshIndexINS_2L2IfEEE9serializeINS_13serialization11LoadArchiveEEEvRT_]+0x6e0): undefined reference to `LZ4_decompress_safe_continue'
/usr/bin/ld: context.cpp:(.text._ZN5flann8LshIndexINS_2L2IfEEE9serializeINS_13serialization11LoadArchiveEEEvRT_[_ZN5flann8LshIndexINS_2L2IfEEE9serializeINS_13serialization11LoadArchiveEEEvRT_]+0x9b8): undefined reference to `LZ4_decompress_safe_continue'
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following/context.cpp.o:context.cpp:(.text._ZN5flann8LshIndexINS_2L2IfEEE9serializeINS_13serialization11LoadArchiveEEEvRT_[_ZN5flann8LshIndexINS_2L2IfEEE9serializeINS_13serialization11LoadArchiveEEEvRT_]+0xac0): more undefined references to `LZ4_decompress_safe_continue' follow
/usr/bin/ld: CMakeFiles/monocular_person_following_node.dir/src/monocular_person_following_node.cpp.o: in function `monocular_person_following::MonocularPersonFollowingNode::callback(boost::shared_ptr<sensor_msgs::Image_<std::allocator<void> > const> const&, boost::shared_ptr<monocular_people_tracking::TrackArray_<std::allocator<void> > const> const&, boost::shared_ptr<monocular_person_following::FaceDetectionArray_<std::allocator<void> > const> const&)':
monocular_person_following_node.cpp:(.text._ZN26monocular_person_following28MonocularPersonFollowingNode8callbackERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEERKNS2_IKN25monocular_people_tracking11TrackArray_IS5_EEEERKNS2_IKNS_19FaceDetectionArray_IS5_EEEE[_ZN26monocular_person_following28MonocularPersonFollowingNode8callbackERKN5boost10shared_ptrIKN11sensor_msgs6Image_ISaIvEEEEERKNS2_IKN25monocular_people_tracking11TrackArray_IS5_EEEERKNS2_IKNS_19FaceDetectionArray_IS5_EEEE]+0x278): undefined reference to `cv::Mat::Mat()'
collect2: error: ld returned 1 exit status
make[2]: *** [monocular_person_following/CMakeFiles/monocular_person_following_node.dir/build.make:363: /home/moca/Desktop/ext_storage/catkin_ws/devel/lib/monocular_person_following/monocular_person_following_node] Error 1
make[1]: *** [CMakeFiles/Makefile2:3221: monocular_person_following/CMakeFiles/monocular_person_following_node.dir/all] Error 2
make: *** [Makefile:141: all] Error 2
Invoking "make -j12 -l12" failed

[kevin-chau]

I'm also having the same issue with LZ4. Is that from flann?

[kevin-chau]

I fixed both of these issues by updating the CMakeLists.txt file: