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)' founds wrong Python version: PYTHON_EXECUTABLE=/opt/pyenv/versions/3.7.5/bin/python PYTHON_VERSION_STRING=3.7.5 Consider specify '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:582 (include) Traceback (most recent call last): File "", line 1, in ModuleNotFoundError: No module named 'numpy' /home/conan/w/cci_PR-4270/.conan/data/opencv/4.1.2/_/_/build/21250321c47d892d31f71a2de090d34d2a6742a2/source_subfolder/modules/highgui/src/window_gtk.cpp:637:13: warning: Deprecated pre-processor symbol [-W#pragma-messages] if (!g_thread_supported ()) { ^ /usr/include/glib-2.0/glib/deprecated/gthread.h:270:38: note: expanded from macro 'g_thread_supported' #define g_thread_supported() (1) GLIB_DEPRECATED_MACRO_IN_2_32 ^ /usr/include/glib-2.0/glib/gversionmacros.h:418:49: note: expanded from macro 'GLIB_DEPRECATED_MACRO_IN_2_32' # define GLIB_DEPRECATED_MACRO_IN_2_32 GLIB_DEPRECATED_MACRO ^ /usr/include/glib-2.0/glib/gmacros.h:989:31: note: expanded from macro 'GLIB_DEPRECATED_MACRO' #define GLIB_DEPRECATED_MACRO _GLIB_GNUC_DO_PRAGMA(GCC warning "Deprecated pre-processor symbol") ^ /usr/include/glib-2.0/glib/gmacros.h:988:33: note: expanded from macro '_GLIB_GNUC_DO_PRAGMA' #define _GLIB_GNUC_DO_PRAGMA(x) _Pragma(G_STRINGIFY (x)) ^ :15:6: note: expanded from here GCC warning "Deprecated pre-processor symbol" ^ 1 warning generated. CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY