Problem instaling libgtk2.0-dev and pkg-config

asked 2019-09-11 01:23:27 -0500

Hi friends, developers, I do not know much English, but I'm trying to learn opencv without Russian instructions for installing opencv. There was a problem at the step of launching the facedetect.py test window from the /opencv-4.1.1/samples/facedetect.py folder.

Here is this piece of program error:

cv2.error: 0pencV(4.1.1 ) /home/pi/opencv/opencv-4.1.1/modules/highgui/src/window.cpp:627: e rror: (-2:Unspecified error) The function is not implemented. Rebuild the library with Wind ows, GTK+ 2.x or Cocoa support. If you are on Ubuntu or Debian, install libgtk2.0-dev and p kg-config, then re-run cmake or configure script in function 'cvShowImage

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there is no gui (in opencv) on your computer. What is your platform? Did you build opencv?

LBerger gravatar imageLBerger ( 2019-09-11 02:39:09 -0500 )edit

For raspberry pi 3/4. In root:

sudo apt install libgtk2.0-dev and pkg-config

or pip:

sudo pip3 install libgtk2.0-dev and pkg-config
supra56 gravatar imagesupra56 ( 2019-09-11 22:11:10 -0500 )edit

pi@raspberrypi: $ apt show pkgconf Рackage: pkgconf Version: 1.6.0-1 Priority: optional Section: devel Maintainer: Andrej Shadura <andrewsh@debian.org installed-size:="" 233="" kВ="" provides:="" pkg-config="" (0.29-1)="" depends:="" libcб="" (>3d="" 2.4),="" libdpkg-perl="" breaks:="" pkg-config="" (>="" 0.29-1)="" homepage:="" https:="" github.com="" pkgconf="" pkgconf="" |down="" load-size:="" 56,5="" kв="" АРТ="" -sources:="" http:="" raspbian.raspberrypi.org="" raspbian="" busterfmain="" armhf="" packages="" description:="" manage="" compile="" and="" link="" flags="" for="" libraries="" pkgconf="" is="" a="" replacement="" for="" pkg-config,="" a="" system="" for="" managing="" library="" compile="" and="" link="" flags="" that="" works="" with="" automake="" and="" autoconf="" ..<="" p="">

pkgconf does not bundle any third-party libraries or depend third-party libraries. on any third-party libraries.

Pkg-config was installed before compiling the opencv package

Volt-AmperAI gravatar imageVolt-AmperAI ( 2019-09-11 23:49:53 -0500 )edit

LBerger, Python 3.7.3 (default April 3 2019) [GCC 8.2.0] on Linux Type "help", "copyright", "credits" or "license" for more information

import cv2 cv2.__version__ '4.1.1'

Volt-AmperAI gravatar imageVolt-AmperAI ( 2019-09-11 23:54:31 -0500 )edit

sudo apt-get install cmake cmake-curses-gui libgtk2.0-dev

With this command I install libgtk2.0-dev, then I don’t understand where to look for a problem place further.

Volt-AmperAI gravatar imageVolt-AmperAI ( 2019-09-12 00:01:32 -0500 )edit

What is your cmake output?

LBerger gravatar imageLBerger ( 2019-09-12 00:59:58 -0500 )edit

sudo apt install libgtk-3-dev

  • D WITH_GTK=ON \
  • D WITH_OPENGL=ON I will try to rebuild cmake and gave advice on another resource, install a more recent version libgtk
Volt-AmperAI gravatar imageVolt-AmperAI ( 2019-09-12 02:22:20 -0500 )edit

That's not cmake output. run cmake and insert in your question using edit button what cmake writes on screen

LBerger gravatar imageLBerger ( 2019-09-12 02:24:07 -0500 )edit

LBerger, tell me what kind of output cmake?

Volt-AmperAI gravatar imageVolt-AmperAI ( 2019-09-12 02:24:32 -0500 )edit

That is my cmake output AT line 123 my GUI configuration use WIN32UI. What's your cmake output for GUI?

LBerger gravatar imageLBerger ( 2019-09-12 03:31:23 -0500 )edit