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PONeed help linking static OpenCV libraries in Qt Creator on Windows
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  1. PONeed help linking static OpenCV libraries in Qt Creator on Windows
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    copied!<p>I have no problem linking the dynamic opencv libraries, but I want to use static libraries instead, so I rebuilt OpenCV 2.3 with the "build shared libraries" option unchecked. I put the following on my .pro file</p> <pre><code>LIBS += "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_calib3d231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_contrib231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_core231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_features2d231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_flann231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_gpu231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_highgui231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_imgproc231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_legacy231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_ml231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_objdetect231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_ts231.a" \ "C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_video231.a" INCLUDEPATH += "C:\Program Files\openCV_static\opencv\build\install\include" INCLUDEPATH += "C:\Program Files\openCV_static\opencv\build\install\include\opencv" </code></pre> <p>This is very similar to what I had before when I was using the dynamic libraries, except the .a files actually ended in .dll .a, and I put the dll's (not the dll.a files) in the qt program's output directory (so the program could find them and run). Now the whole point is that I don't need those dlls, so they're no longer in my program's output directory (actually they didn't build with OpenCV). But I get these errors when I try to build my program:</p> <pre><code>C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_highgui231.a(cap_vfw.obj):cap_vfw.cpp:(.text$_ZN17CvVideoWriter_VFW5closeEv+0x13): undefined reference to `AVIStreamRelease@4' C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_highgui231.a(cap_vfw.obj):cap_vfw.cpp:(.text$_ZN17CvVideoWriter_VFW5closeEv+0x25): undefined reference to `AVIStreamRelease@4' C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_highgui231.a(cap_vfw.obj):cap_vfw.cpp:(.text$_ZN17CvVideoWriter_VFW5closeEv+0x37): undefined reference to `AVIFileRelease@4' C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_highgui231.a(cap_vfw.obj):cap_vfw.cpp:(.text$_ZN16CvCaptureCAM_VFW4openEi+0x6c): undefined reference to `capGetDriverDescriptionA@20' C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_highgui231.a(cap_vfw.obj):cap_vfw.cpp:(.text$_ZN16CvCaptureCAM_VFW4openEi+0xb7): undefined reference to `capCreateCaptureWindowA@32' C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_highgui231.a(cap_vfw.obj):cap_vfw.cpp:(.text$_ZN16CvCaptureAVI_VFW9grabFrameEv+0x29): undefined reference to `AVIStreamGetFrame@8' . . . . C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_highgui231.a(grfmt_jpeg2000.obj):grfmt_jpeg2000.cpp:(.text$_ZN2cv13Jpeg2KEncoder5writeERKNS_3MatERKSt6vectorIiSaIiEE+0x17b): undefined reference to `jas_stream_close' C:\Program Files\openCV_static\opencv\build\install\lib\libopencv_highgui231.a(grfmt_jpeg2000.obj):grfmt_jpeg2000.cpp:(.text.startup._GLOBAL__sub_I_C__Program_Files_openCV_static_opencv_modules_highgui_src_grfmt_jpeg2000.cpp+0x4): undefined reference to `jas_init' collect2: ld returned 1 exit status mingw32-make.exe[1]: *** [release\trusion.exe] Error 1 mingw32-make.exe: *** [release] Error 2 23:21:10: The process "C:\MinGW\bin\mingw32-make.exe" exited with code 2. Error while building project trusion (target: Desktop) When executing build step 'Make' </code></pre> <p>I am using MinGW. Compiling the project with the same toolchain used to build opencv. Worked with dynamic libs, as mentioned above. Does not work with static libs.</p>
 

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