OpenCV2.4 lib complied by mingw not working (Bug #1926)

Same problem for me with mingw on windows (32 bits). There was the same issue with OpenCV 2.3.1 (https://code.ros.org/trac/opencv/ticket/1494, http://code.opencv.org/issues/1668)

Alexander Sun wrote:

Hi all,
Thanks for read the message.

I don't know whether some one already solved the problem. I can use OpenCV2.4 lib compiled by VS on Windows smoothly(VS2010 and VS11), as well as work fine with OpenCV2.4 on Ubuntu(Eclipse + CDT).

But I can't use the OpenCV2.4 lib compiled by mingw on Windows. The program could build well. But When I run it, it just show me a grey
window and crashed immediately. (I also test different samples, all samples could work well on VS.)

First I think it is my IDE environment setting problem(Eclipse + CDT on Windows). As consequence, I check the setting, but nothing changed.
Then I set the OpenCV environment in Code::Block and Qt Creator, the program all get same problem. I also test it in different computers, the problem still happened.

Then I confirm my environment variable setting. It all seems correct.

Could anyone suggest me how to solve the problem? Thanks!

Best Regards!
Sun

Thanks for your reply, but it's not just namedWindow or imshow's problem. Even I use imwrite, it get a empty image.

Sylvain Leroy wrote:

Same problem for me with mingw on windows (32 bits). There was the same issue with OpenCV 2.3.1 (https://code.ros.org/trac/opencv/ticket/1494, http://code.opencv.org/issues/1668)

Alexander Sun wrote:

Hi all,
Thanks for read the message.

I don't know whether some one already solved the problem. I can use OpenCV2.4 lib compiled by VS on Windows smoothly(VS2010 and VS11), as well as work fine with OpenCV2.4 on Ubuntu(Eclipse + CDT).

But I can't use the OpenCV2.4 lib compiled by mingw on Windows. The program could build well. But When I run it, it just show me a grey
window and crashed immediately. (I also test different samples, all samples could work well on VS.)

First I think it is my IDE environment setting problem(Eclipse + CDT on Windows). As consequence, I check the setting, but nothing changed.
Then I set the OpenCV environment in Code::Block and Qt Creator, the program all get same problem. I also test it in different computers, the problem still happened.

Then I confirm my environment variable setting. It all seems correct.

Could anyone suggest me how to solve the problem? Thanks!

Best Regards!
Sun

highgui's problem... when I don't use highgui, all work fine.

Guys, can you post more details about you build environments? Especially version of mingw including download URL if you have.

Also could you verify if OpenCV trunk r8346 still has this problem?

I have just downloaded the 8346 revision and I have this error when using cmake gui :
CMake Error at CMakeLists.txt:282 (include):
A logical block opening on the line

C:/OpenCV2.4.0_trunk8346_MinGW/cmake/OpenCVCompilerOptions.cmake:1 (if)

is not closed.

And to answer your question, I have gcc 4.6.2 and I downloaded mingw here : http://sourceforge.net/projects/mingw/files/

Sorry, fixed in r8347. Please try it.

I have compiled r8347 but I still can't run contours2 or drawing samples. These programs crash directly.

Here is my configuration :

General configuration for OpenCV 2.4.0 =====================================

  Platform:
    Host:                        Windows 6.1 x86
    CMake:                       2.8.8
    CMake generator:             MinGW Makefiles
    CMake build tool:            C:/MinGW/bin/mingw32-make.exe
    Configuration:               Release

  C/C++:
    Built as dynamic libs?:      YES
    C++ Compiler:                C:/MinGW/bin/g++.exe (ver 4.6.2)
    C++ flags (Release):         -Wall -march=i686 -fomit-frame-pointer -msse -msse2 -mfpmath=sse -ffunction-sections -O2 -DNDEBUG   -DNDEBUG
    C++ flags (Debug):           -Wall -march=i686 -fomit-frame-pointer -msse -msse2 -mfpmath=sse -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG -ggdb3
    C Compiler:                  C:/MinGW/bin/gcc.exe
    C flags (Release):           -Wall -march=i686 -fomit-frame-pointer -msse -msse2 -mfpmath=sse -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
    C flags (Debug):             -Wall -march=i686 -fomit-frame-pointer -msse -msse2 -mfpmath=sse -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG -ggdb3
    Linker flags (Release):      
    Linker flags (Debug):        

  OpenCV modules:
    To be built:                 calib3d contrib core features2d flann gpu highgui imgproc legacy ml nonfree objdetect photo stitching ts video videostab
    Disabled by user:            world
    Disabled by dependency:      -
    Unavailable:                 androidcamera java python

  GUI: 
    Win32 UI:                    YES
    OpenGL support:              NO

  Media I/O: 
    ZLib:                        build (ver 1.2.6)
    JPEG:                        build (ver 62)
    PNG:                         build (ver 1.5.9)
    TIFF:                        build (ver 42)
    JPEG 2000:                   build (ver 1.900.1)
    OpenEXR:                     NO
    OpenNI:                      NO
    OpenNI PrimeSensor Modules:  NO
    XIMEA:                       NO

  Video I/O:                     DirectShow
    FFMPEG:                      YES (prebuilt binaries)
      codec:                     YES (ver 53.61.100)
      format:                    YES (ver 53.32.100)
      util:                      YES (ver 51.35.100)
      swscale:                   YES (ver 2.1.100)
      gentoo-style:              YES

  Other third-party libraries:
    Use IPP:                     NO
    Use TBB:                     NO
    Use Cuda:                    NO
    Use Eigen:                   NO
    Use Clp:                     NO

  Python:
    Interpreter:                 NO

  Documentation:
    Build Documentation:         NO
    Sphinx:                      NO
    PdfLaTeX compiler:           C:/Program Files/MiKTeX 2.9/miktex/bin/pdflatex.exe

  Tests and samples:
    Tests:                       YES
    Performance tests:           YES
    Examples:                    YES

  Install path:                  C:/OpenCV2.4.0_trunk8347_MinGW/build/install

  cvconfig.h is in:              C:/OpenCV2.4.0_trunk8347_MinGW/build
-----------------------------------------------------------------

I have downloaded r8383 and it still crashes with MinGW. I can't run the samples.

Could you try r8386?

Same problem with r8386

r8393 still crashes for me