OpenCV 4.2 supports Python 2.7, 3.5, 3.6, 3.7, 3.8.This procedure was tested with Ubuntu Linux on laptop, and Raspberry Pi 3 with Raspbian 9 stretch.

1. Source File Not Compiled Dev C Opencv Download
2. Opencv Source Code

This maybe because the c compiler is designed to work in linux.I had this problem too and to fix it go to tools and select compiler options.In the box click on programs. Now you will see a tab with gcc and make and the respective path to it.Edit the gcc and make path to use mingw32-c.exe and mingw32-make.exe respectively.Now it will work. Dec 07, 2017 hi friends welcome to santra techspot i explained how to solve source file not compiled error in dev c compiler. Dev c is a good software to write. Mar 22, 2013 The purpose of this document is to help a reader to get started with Computer Vision library OpenCV on Linux system. OpencCV is a multi-platform library, but this article will be focused only on OpenCV using Linux operating system ( although, just the installation of the OpenCV library and video camera is platform-specific, all examples in this article should compile on any platform where.

Prereqs

assumes preferred Python exe is aliased to (it runs when you type) pythonCheck which python to be sure it’s NOT pointing to /usr/bin/python or this install will not work!

Source File Not Compiled Dev C Opencv Download

Optionallyinstall free Intel IPP, TBBand/orMKLas well.

Linux

Mac OSX

BSD

These are untested, but should give a starting point.

Build Python OpenCV3

Downloadthe latest OpenCV Source code zip file.

If you have trouble with Cmake, consider cmake-gui or using the simplest Cmake script at the bottom of this page.Especially for embedded systems like the Raspberry Pi, consider make -j -l 2 to avoid over-temperature and under-voltage warnings (in general when compiling on Raspberry Pi, not just for OpenCV).

which results insomething like this Gist:

2. Test OpenCV

This should play a random noise movie.

Fix OpenCV errors

“ModuleNotFoundError: No module named ‘cv2’”

Opencv Source Code

Ensure that desired Python site-packages found with

contains

• Windows: cv2.*.pyd
• Linux: cv2.*.so

ImportError: ~/miniconda3/lib/libstdc++.so.6: version `GLIBCXX_3.4.22’ not found (required by ~/miniconda3/lib/libopencv_objdetect.so.3)

Use a more up to date system libstdc++ by

If you get error

or

then tryusing g++ 5

• Disable use of Nvidia CUDA when compiling OpenCV via -DWITH_CUDA=OFF. Because Cuda takes so much longer to compile, even if you have the GPU, maybe first try without CUDA, to see if OpenCV3 is going to work for you, then recompile with CUDA.
• To avoid the libopencv_imgcodecs.so.3: undefined reference to TIFFOpen@LIBTIFF_4.0 type errors, add the -DBUILD_TIFF=ON option

If you get the error like

lib/libm.so.6: version GLIBC_2.15 not found (required by /usr/lib/x86_64-linux-gnu/libx264.so.142)

then try as afix to GLIBC_2.15 not found

If you get error

SIGILL illegal instruction (Core dumped)

when typing

try to get more information by typing in Terminal

and rerun the command that gave the core dumped error.Now you’ll have a file core in that directory. Type in Terminal

to get hints about the failure.

Minimal Install

This has just the stuff needed for a basic OpenCV install for Python 3.

Notes

libjasper-dev was removed fromUbuntu.

Intel MKL installation

Download free Intel MKL, extract and type

sudo is not needed; MKL will install to ~/intel

trouble installing into desired Python

Be sure desired Python is under

Consider adding this to your cmake shell command:

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Related

• GNU Make parallel build