error on line DEFINE_bool(visualize_feature_predictions,

[fatmanurozdemir]

error: expected constructor, destructor, or type conversion before ‘(’ token 30 | DEFINE_bool(visualize_feature_predictions

I am getting this error while building. I guess it is related to gflags library. I built the gflags lib from source and also using sudo apt-get install libgflags-dev command. I also added list(APPEND CMAKE_PREFIX_PATH <gflags-config.cmake path>) line into CMakeLists.txt but it did not work.

Command:

make -j $(nproc)```

Consolidate compiler generated dependencies of target gtest [ 2%] Built target gtest Consolidate compiler generated dependencies of target kimera_vio [ 3%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/StereoImuSyncPacket.cpp.o [ 4%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/StereoVisionImuFrontend.cpp.o [ 5%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/MonoImuSyncPacket.cpp.o [ 5%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/MonoVisionImuFrontend.cpp.o [ 6%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/VisionImuFrontend.cpp.o [ 7%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/VisionImuFrontendModule.cpp.o [ 8%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/Tracker.cpp.o [ 9%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/feature-detector/FeatureDetectorParams.cpp.o In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/utils/UtilsOpenCV.h:34, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/CameraParams.h:27, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/Frame.h:36, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/StereoFrame.h:40, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/VisionImuFrontendParams.h:29, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/feature-detector/FeatureDetectorParams.cpp:16: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [ 10%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/feature-detector/FeatureDetector.cpp.o /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp:30:12: error: expected constructor, destructor, or type conversion before ‘(’ token 30 | DEFINE_bool(visualize_feature_predictions, | ^ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp:8: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/Tracker.h: In constructor ‘VIO::Tracker::Tracker(const VIO::FrontendParams&, const ConstPtr&, VIO::DisplayQueue*)’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/Tracker.h:155:14: warning: ‘VIO::Tracker::landmark_count_’ will be initialized after [-Wreorder] 155 | LandmarkId landmark_count_; | ^~~~~~~~~~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/Tracker.h:61:24: warning: ‘const VIO::FrontendParams VIO::Tracker::tracker_params_’ [-Wreorder] 61 | const FrontendParams tracker_params_; | ^~~~~~~~~~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp:37:1: warning: when initialized here [-Wreorder] 37 | Tracker::Tracker(const FrontendParams& tracker_params, | ^~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp: In member function ‘void VIO::Tracker::featureTracking(VIO::Frame*, VIO::Frame*, const gtsam::Rot3&, boost::optionalcv::Mat)’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp:155:31: warning: comparison of integer expressions of different signedness: ‘const size_t’ {aka ‘const long unsigned int’} and ‘const int’ [-Wsign-compare] 155 | if (!status[i] || lmk_age > tracker_params_.maxFeatureAge_) { | ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp:180:25: error: ‘FLAGS_visualize_feature_predictions’ was not declared in this scope 180 | if (display_queue_ && FLAGS_visualize_feature_predictions) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp: In member function ‘std::pair<VIO::TrackingStatus, gtsam::Pose3> VIO::Tracker::geometricOutlierRejectionMono(VIO::Frame*, VIO::Frame*)’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp:245:36: warning: comparison of integer expressions of different signedness: ‘std::vector::size_type’ {aka ‘long unsigned int’} and ‘const int’ [-Wsign-compare] 245 | if (mono_ransac_.inliers_.size() < tracker_params_.minNrMonoInliers_) { | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp: In member function ‘std::pair<VIO::TrackingStatus, gtsam::Pose3> VIO::Tracker::geometricOutlierRejectionMonoGivenRotation(VIO::Frame*, VIO::Frame*, const gtsam::Rot3&)’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp:338:46: warning: comparison of integer expressions of different signedness: ‘std::vector::size_type’ {aka ‘long unsigned int’} and ‘const int’ [-Wsign-compare] 338 | if (mono_ransac_given_rot_.inliers_.size() < | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^ 339 | tracker_params_.minNrMonoInliers_) { | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/MonoVisionImuFrontend.cpp: In member function ‘VIO::MonoFrontendOutput::UniquePtr VIO::MonoVisionImuFrontend::nominalSpinMono(VIO::MonoImuSyncPacket::UniquePtr&&)’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/MonoVisionImuFrontend.cpp:96:8: warning: variable ‘tic_full_preint’ set but not used [-Wunused-but-set-variable] 96 | auto tic_full_preint = utils::Timer::tic(); | ^~~~~~~~~~~~~~~ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/StereoVisionImuFrontend.cpp:16: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/StereoVisionImuFrontend.h: In constructor ‘VIO::StereoVisionImuFrontend::StereoVisionImuFrontend(const VIO::ImuParams&, const ImuBias&, const VIO::FrontendParams&, const ConstPtr&, VIO::DisplayQueue*, bool)’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/StereoVisionImuFrontend.h:197:18: warning: ‘VIO::StereoVisionImuFrontend::frontend_params_’ will be initialized after [-Wreorder] 197 | FrontendParams frontend_params_; | ^~~~~~~~~~~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/StereoVisionImuFrontend.h:184:26: warning: ‘VIO::StereoCamera::ConstPtr VIO::StereoVisionImuFrontend::stereo_camera_’ [-Wreorder] 184 | StereoCamera::ConstPtr stereo_camera_; | ^~~~~~~~~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/StereoVisionImuFrontend.cpp:31:1: warning: when initialized here [-Wreorder] 31 | StereoVisionImuFrontend::StereoVisionImuFrontend( | ^~~~~~~~~~~~~~~~~~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp: In member function ‘std::pair<std::pair<VIO::TrackingStatus, gtsam::Pose3>, Eigen::Matrix<double, 3, 3> > VIO::Tracker::geometricOutlierRejectionStereoGivenRotation(VIO::StereoFrame&, VIO::StereoFrame&, VIO::StereoCamera::ConstPtr, const gtsam::Rot3&)’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp:600:22: warning: comparison of integer expressions of different signedness: ‘std::vector::size_type’ {aka ‘long unsigned int’} and ‘const int’ [-Wsign-compare] 600 | if (inliers.size() < tracker_params_.minNrStereoInliers_) { | ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp: In member function ‘std::pair<VIO::TrackingStatus, gtsam::Pose3> VIO::Tracker::geometricOutlierRejectionStereo(VIO::StereoFrame&, VIO::StereoFrame&)’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp:698:38: warning: comparison of integer expressions of different signedness: ‘std::vector::size_type’ {aka ‘long unsigned int’} and ‘const int’ [-Wsign-compare] 698 | if (stereo_ransac_.inliers_.size() < tracker_params_.minNrStereoInliers_) { | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/feature-detector/FeatureDetector.cpp: In member function ‘void VIO::FeatureDetector::featureDetection(VIO::Frame*, boost::optionalcv::Mat)’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/feature-detector/FeatureDetector.cpp:116:8: warning: variable ‘start_time_tic’ set but not used [-Wunused-but-set-variable] 116 | auto start_time_tic = utils::Timer::tic(); | ^~~~~~~~~~~~~~ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/utils/UtilsOpenCV.h:34, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/CameraParams.h:27, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/Frame.h:36, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/feature-detector/FeatureDetector.h:21, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/feature-detector/FeatureDetector.cpp:7: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h: At global scope: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [ 10%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/feature-detector/NonMaximumSuppression.cpp.o In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/feature-detector/NonMaximumSuppression.cpp:24: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [ 11%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/feature-detector/anms/anms.cpp.o /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/feature-detector/anms/anms.cpp: In function ‘std::vectorcv::KeyPoint anms::TopN(const std::vectorcv::KeyPoint&, int)’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/feature-detector/anms/anms.cpp:39:20: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::vectorcv::KeyPoint::size_type’ {aka ‘long unsigned int’} [-Wsign-compare] 39 | if (numRetPoints > keyPoints.size()) { | ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/feature-detector/anms/anms.cpp: In function ‘std::vectorcv::KeyPoint anms::BrownANMS(const std::vectorcv::KeyPoint&, int)’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/feature-detector/anms/anms.cpp:52:20: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::vectorcv::KeyPoint::size_type’ {aka ‘long unsigned int’} [-Wsign-compare] 52 | if (numRetPoints > keyPoints.size()) { | ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/VioNavState.h:27, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/backend/VioBackend-definitions.h:28, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/FrontendInputPacketBase.h:17, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/MonoImuSyncPacket.h:19, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/MonoImuSyncPacket.cpp:17: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [ 12%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/rgbd/RgbdFrame.cpp.o In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/VioNavState.h:27, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/backend/VioBackend-definitions.h:28, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/FrontendInputPacketBase.h:17, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/StereoImuSyncPacket.h:22, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/StereoImuSyncPacket.cpp:17: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/VioNavState.h:27, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/backend/VioBackend-definitions.h:28, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/FrontendInputPacketBase.h:17, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/VisionImuFrontend.h:22, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/VisionImuFrontendModule.h:17, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/VisionImuFrontendModule.cpp:15: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/utils/UtilsOpenCV.h:34, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/CameraParams.h:27, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/Camera.h:25, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/MonoVisionImuFrontend-definitions.h:19, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/MonoVisionImuFrontend.cpp:17: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h: At global scope: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/VioNavState.h:27, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/backend/VioBackend-definitions.h:28, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/FrontendInputPacketBase.h:17, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/VisionImuFrontend.h:22, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/StereoVisionImuFrontend.h:28, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/StereoVisionImuFrontend.cpp:16: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h: At global scope: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/VioNavState.h:27, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/backend/VioBackend-definitions.h:28, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/FrontendInputPacketBase.h:17, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/VisionImuFrontend.h:22, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/VisionImuFrontend.cpp:15: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp:25: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/optical-flow/OpticalFlowPredictorFactory.h: In static member function ‘static VIO::OpticalFlowPredictor::UniquePtr VIO::OpticalFlowPredictorFactory::makeOpticalFlowPredictor(const VIO::OpticalFlowPredictorType&, Args&& ...) [with Args = {cv::Mat, cv::Size_}]’: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/optical-flow/OpticalFlowPredictorFactory.h:39:20: warning: control reaches end of non-void function [-Wreturn-type] 39 | << static_cast(optical_flow_predictor_type); | ^ [ 13%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/rgbd/RgbdImuSyncPacket.cpp.o [ 13%] Building CXX object CMakeFiles/kimera_vio.dir/src/frontend/optical-flow/OpticalFlowPredictor.cpp.o [ 14%] Building CXX object CMakeFiles/kimera_vio.dir/src/backend/VioBackendModule.cpp.o In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/utils/UtilsOpenCV.h:34, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/CameraParams.h:27, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/Camera.h:25, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/Tracker.h:26, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/Tracker.cpp:8: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h: At global scope: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ make[2]: *** [CMakeFiles/kimera_vio.dir/build.make:398: CMakeFiles/kimera_vio.dir/src/frontend/Tracker.cpp.o] Error 1 make[2]: *** Waiting for unfinished jobs.... In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/utils/UtilsOpenCV.h:34, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/CameraParams.h:27, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/Frame.h:36, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/rgbd/RgbdFrame.h:17, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/rgbd/RgbdFrame.cpp:15: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/utils/UtilsOpenCV.h:34, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/optical-flow/OpticalFlowPredictor.h:23, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/optical-flow/OpticalFlowPredictor.cpp:16: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/VioNavState.h:27, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/backend/VioBackend-definitions.h:28, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/FrontendInputPacketBase.h:17, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/frontend/rgbd/RgbdImuSyncPacket.h:11, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/frontend/rgbd/RgbdImuSyncPacket.cpp:9: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/backend/RegularVioBackend-definitions.h:28, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/backend/RegularVioBackend.h:25, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/backend/VioBackendModule.h:18, from /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/src/backend/VioBackendModule.cpp:16: /mnt/C462F17762F16F14/work/SLAM/Kimera-VIO/include/kimera-vio/common/vio_types.h:70:13: warning: ‘void VIO::getValidKeypointsFromStatusKeypointsCV(const StatusKeypointsCV&, VIO::KeypointsCV*)’ defined but not used [-Wunused-function] 70 | static void getValidKeypointsFromStatusKeypointsCV( | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ make[1]: *** [CMakeFiles/Makefile2:838: CMakeFiles/kimera_vio.dir/all] Error 2 make: *** [Makefile:146: all] Error 2

* GTSAM version used:4.1
* OpenCV version used: 3.3.1
* Operating system and version: Ubuntu 20.04