dpkg-query: no packages found matching libgtk2.0-dev debconf: delaying package configuration, since apt-utils is not installed 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:606 (include) Traceback (most recent call last): File "", line 1, in ModuleNotFoundError: No module named 'numpy' CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY /home/conan/w/cci_PR-3465/.conan/data/jasper/2.0.16/_/_/package/43cfd2cc3482827e310611a84a2f1c9114e3662e/lib/libjasper.a(jas_stream.c.o): In function `jas_stream_tmpfile': /home/conan/w/cci_PR-3057/.conan/data/jasper/2.0.16/_/_/build/43cfd2cc3482827e310611a84a2f1c9114e3662e/source_subfolder/src/libjasper/base/jas_stream.c:520: warning: the use of `tmpnam' is dangerous, better use `mkstemp'