CMake Warning at source_subfolder/cmake/OpenCVDetectPython.cmake:81 (message): CMake's 'find_host_package(PythonInterp 2.7)' found wrong Python version: PYTHON_EXECUTABLE=/opt/pyenv/versions/3.7.5/bin/python PYTHON_VERSION_STRING=3.7.5 Consider providing the 'PYTHON2_EXECUTABLE' variable via CMake command line or environment variables Call Stack (most recent call first): source_subfolder/cmake/OpenCVDetectPython.cmake:271 (find_python) source_subfolder/CMakeLists.txt:607 (include) Traceback (most recent call last): File "", line 1, in ModuleNotFoundError: No module named 'numpy' clang: error: unable to execute command: Terminated clang: error: clang frontend command failed due to signal (use -v to see invocation) clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final) Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/bin clang: note: diagnostic msg: PLEASE submit a bug report to http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and associated run script. Terminated make[2]: *** [source_subfolder/modules/features2d/CMakeFiles/opencv_features2d.dir/sift.avx512_skx.cpp.o] Error 143 make[2]: *** Waiting for unfinished jobs.... clang: error: unable to execute command: Terminated clang: error: clang frontend command failed due to signal (use -v to see invocation) clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final) Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/bin clang: note: diagnostic msg: PLEASE submit a bug report to http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and associated run script. Terminated make[2]: *** [source_subfolder/modules/highgui/CMakeFiles/opencv_highgui.dir/src/window.cpp.o] Error 143 make[2]: *** Waiting for unfinished jobs.... make[2]: *** [source_subfolder/modules/highgui/CMakeFiles/opencv_highgui.dir/src/roiSelector.cpp.o] Terminated make[1]: *** [source_subfolder/modules/highgui/CMakeFiles/opencv_highgui.dir/all] Terminated make[1]: *** Waiting for unfinished jobs.... clang: error: unable to execute command: Terminated clang: error: clang frontend command failed due to signal (use -v to see invocation) clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final) Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/bin clang: note: diagnostic msg: PLEASE submit a bug report to http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and associated run script. Terminated make[2]: *** [source_subfolder/modules/features2d/CMakeFiles/opencv_features2d.dir/sift.avx2.cpp.o] Error 143 make[1]: *** [source_subfolder/modules/features2d/CMakeFiles/opencv_features2d.dir/all] Error 2 make: *** [all] Error 2 opencv/4.5.0: ERROR: Package 'ff3167fcf2446c146d4fe19ee717f8dcd4944378' build failed opencv/4.5.0: WARN: Build folder /home/conan/w/cci_PR-3409/.conan/data/opencv/4.5.0/_/_/build/ff3167fcf2446c146d4fe19ee717f8dcd4944378 ERROR: opencv/4.5.0: Error in build() method, line 198 cmake.build() ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-3409/.conan/data/opencv/4.5.0/_/_/build/ff3167fcf2446c146d4fe19ee717f8dcd4944378/build_subfolder' '--' '-j3' Terminated