<div dir="ltr">I have restarted from scratch...<br><br>So instead of using gold linker, it is using the default linker, the header test is now ok, but I still have linking errors:<br><br>$ ninja ITKVideoBridgeOpenCV-all <br>[1/1] Linking CXX executable bin/ITKVideoBridgeOpenCVTestDriver<br>FAILED: : && /usr/lib/ccache/c++ -Wall -Wcast-align -Wdisabled-optimization -Wextra -Wformat=2 -Winvalid-pch -Wno-format-nonliteral -Wpointer-arith -Wshadow -Wunused -Wwrite-strings -funit-at-a-time -Wno-strict-overflow -Wno-deprecated -Wno-invalid-offsetof -Woverloaded-virtual -Wstrict-null-sentinel  -Wno-array-bounds -msse2 -g   Modules/Video/BridgeOpenCV/test/CMakeFiles/ITKVideoBridgeOpenCVTestDriver.dir/ITKVideoBridgeOpenCVTestDriver.cxx.o Modules/Video/BridgeOpenCV/test/CMakeFiles/ITKVideoBridgeOpenCVTestDriver.dir/itkOpenCVVideoCaptureTest.cxx.o Modules/Video/BridgeOpenCV/test/CMakeFiles/ITKVideoBridgeOpenCVTestDriver.dir/itkOpenCVImageBridgeGrayScaleTest.cxx.o Modules/Video/BridgeOpenCV/test/CMakeFiles/ITKVideoBridgeOpenCVTestDriver.dir/itkOpenCVImageBridgeRGBTest.cxx.o Modules/Video/BridgeOpenCV/test/CMakeFiles/ITKVideoBridgeOpenCVTestDriver.dir/itkOpenCVVideoIOTest.cxx.o Modules/Video/BridgeOpenCV/test/CMakeFiles/ITKVideoBridgeOpenCVTestDriver.dir/itkOpenCVVideoIOFactoryTest.cxx.o Modules/Video/BridgeOpenCV/test/CMakeFiles/ITKVideoBridgeOpenCVTestDriver.dir/itkOpenCVBasicTypeBridgeTest.cxx.o  -o bin/ITKVideoBridgeOpenCVTestDriver  -rdynamic lib/libitkdouble-conversion-4.9.so.1 lib/libITKIOBMP-4.9.so.1 lib/libITKIOGDCM-4.9.so.1 lib/libITKIOGIPL-4.9.so.1 lib/libITKIOImageBase-4.9.so.1 lib/libITKIOJPEG-4.9.so.1 lib/libITKIOMeta-4.9.so.1 lib/libITKIONIFTI-4.9.so.1 lib/libITKIONRRD-4.9.so.1 lib/libITKIOPNG-4.9.so.1 lib/libITKIOTIFF-4.9.so.1 lib/libITKIOVTK-4.9.so.1 lib/libitksys-4.9.so.1 lib/libITKVideoBridgeOpenCV-4.9.so.1 /home/arnaud/install/lib/libopencv_videostab.so.2.4.9 /home/arnaud/install/lib/libopencv_video.so.2.4.9 /home/arnaud/install/lib/libopencv_ts.a /home/arnaud/install/lib/libopencv_superres.so.2.4.9 /home/arnaud/install/lib/libopencv_stitching.so.2.4.9 /home/arnaud/install/lib/libopencv_photo.so.2.4.9 /home/arnaud/install/lib/libopencv_ocl.so.2.4.9 /home/arnaud/install/lib/libopencv_objdetect.so.2.4.9 /home/arnaud/install/lib/libopencv_nonfree.so.2.4.9 /home/arnaud/install/lib/libopencv_ml.so.2.4.9 /home/arnaud/install/lib/libopencv_legacy.so.2.4.9 /home/arnaud/install/lib/libopencv_imgproc.so.2.4.9 /home/arnaud/install/lib/libopencv_highgui.so.2.4.9 /home/arnaud/install/lib/libopencv_gpu.so.2.4.9 /home/arnaud/install/lib/libopencv_flann.so.2.4.9 /home/arnaud/install/lib/libopencv_features2d.so.2.4.9 /home/arnaud/install/lib/libopencv_core.so.2.4.9 /home/arnaud/install/lib/libopencv_contrib.so.2.4.9 /home/arnaud/install/lib/libopencv_calib3d.so.2.4.9 lib/libitkdouble-conversion-4.9.so.1 lib/libITKIOBMP-4.9.so.1 lib/libITKIOGDCM-4.9.so.1 lib/libITKIOGIPL-4.9.so.1 lib/libITKIOImageBase-4.9.so.1 lib/libITKIOJPEG-4.9.so.1 lib/libITKIOMeta-4.9.so.1 lib/libITKIONIFTI-4.9.so.1 lib/libITKIONRRD-4.9.so.1 lib/libITKIOPNG-4.9.so.1 lib/libITKIOTIFF-4.9.so.1 lib/libITKIOVTK-4.9.so.1 lib/libitksys-4.9.so.1 -lm -lpthread -lrt -ltbb /home/arnaud/install/lib/libopencv_nonfree.so.2.4.9 /home/arnaud/install/lib/libopencv_ocl.so.2.4.9 /home/arnaud/install/lib/libopencv_gpu.so.2.4.9 /home/arnaud/install/lib/libopencv_photo.so.2.4.9 /home/arnaud/install/lib/libopencv_objdetect.so.2.4.9 /home/arnaud/install/lib/libopencv_legacy.so.2.4.9 /home/arnaud/install/lib/libopencv_video.so.2.4.9 /home/arnaud/install/lib/libopencv_ml.so.2.4.9 /home/arnaud/install/lib/libopencv_calib3d.so.2.4.9 /home/arnaud/install/lib/libopencv_features2d.so.2.4.9 /home/arnaud/install/lib/libopencv_highgui.so.2.4.9 /home/arnaud/install/lib/libopencv_imgproc.so.2.4.9 /home/arnaud/install/lib/libopencv_flann.so.2.4.9 /home/arnaud/install/lib/libopencv_core.so.2.4.9 lib/libITKVideoIO-4.9.so.1 lib/libITKIOImageBase-4.9.so.1 lib/libITKVideoCore-4.9.so.1 lib/libITKCommon-4.9.so.1 lib/libitkdouble-conversion-4.9.so.1 lib/libitksys-4.9.so.1 lib/libITKVNLInstantiation-4.9.so.1 -lvnl_algo -lvnl -lv3p_netlib -lnetlib -lvcl -lpthread -lm -ldl -Wl,-rpath,/home/arnaud/source/build-itk/lib:/home/arnaud/install/lib -Wl,-rpath-link,/home/arnaud/source/build-itk/lib && :<br>Modules/Video/BridgeOpenCV/test/CMakeFiles/ITKVideoBridgeOpenCVTestDriver.dir/itkOpenCVVideoCaptureTest.cxx.o: In function `itk::OpenCVVideoIOFactory::New()':<br>/home/arnaud/source/itk/Modules/Video/BridgeOpenCV/include/itkOpenCVVideoIOFactory.h:46: undefined reference to `itk::OpenCVVideoIOFactory::OpenCVVideoIOFactory()'<br>Modules/Video/BridgeOpenCV/test/CMakeFiles/ITKVideoBridgeOpenCVTestDriver.dir/itkOpenCVVideoIOTest.cxx.o: In function `itk::OpenCVVideoIO::New()':<br>/home/arnaud/source/itk/Modules/Video/BridgeOpenCV/include/itkOpenCVVideoIO.h:48: undefined reference to `itk::OpenCVVideoIO::OpenCVVideoIO()'<br>Modules/Video/BridgeOpenCV/test/CMakeFiles/ITKVideoBridgeOpenCVTestDriver.dir/itkOpenCVVideoIOTest.cxx.o: In function `itk::ObjectFactory<itk::OpenCVVideoIO>::Create()':<br>/home/arnaud/source/itk/Modules/Core/Common/include/itkObjectFactory.h:60: undefined reference to `typeinfo for itk::OpenCVVideoIO'<br>/home/arnaud/source/itk/Modules/Core/Common/include/itkObjectFactory.h:62: undefined reference to `typeinfo for itk::OpenCVVideoIO'<br>collect2: error: ld returned 1 exit status<br>ninja: build stopped: subcommand failed.<br><br><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Aug 14, 2015 at 8:21 AM, Arnaud Gelas <span dir="ltr"><<a href="mailto:arnaudgelas@gmail.com" target="_blank">arnaudgelas@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Hi Matt,<br><br></div>It happened while directly building ITK with OpenCV 2.4.9, without any superbuild...<br>Thanks for the patch, but that does not solve it...<br><br>I wonder if it could have something to do with the new linking system (note it uses COMPILE_DEPENDS) ?<br><br></div><div>Thanks,<br></div><div>Arnaud<br></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Aug 13, 2015 at 6:41 PM, Matt McCormick <span dir="ltr"><<a href="mailto:matt.mccormick@kitware.com" target="_blank">matt.mccormick@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Arnaud,<br>
<br>
Is this with building the examples with the superbuild?  I think I was<br>
getting this error, too.  Here is a patch that should address it:<br>
<br>
  <a href="http://review.source.kitware.com/#/c/20077/" rel="noreferrer" target="_blank">http://review.source.kitware.com/#/c/20077/</a><br>
<br>
Thanks,<br>
Matt<br>
<div><div><br>
On Thu, Aug 13, 2015 at 11:40 AM, Arnaud Gelas <<a href="mailto:arnaudgelas@gmail.com" target="_blank">arnaudgelas@gmail.com</a>> wrote:<br>
> Hi all,<br>
><br>
> I have just tried building ITK with BridgeOpenCV on Ubuntu 14.04 and I get<br>
> the following link error<br>
><br>
> [2/2] Linking CXX executable bin/ITKVideoBridgeOpenCVHeaderTest1<br>
><br>
> [...]<br>
><br>
> lib/libITKVideoBridgeOpenCV-4.9.so.1: error: undefined reference to<br>
> 'itk::VideoIOBase::VideoIOBase()'<br>
> lib/libITKVideoBridgeOpenCV-4.9.so.1: error: undefined reference to<br>
> 'itk::VideoIOBase::~VideoIOBase()'<br>
> lib/libITKVideoBridgeOpenCV-4.9.so.1: error: undefined reference to<br>
> 'itk::VideoIOBase::PrintSelf(std::ostream&, itk::Indent) const'<br>
> lib/libITKVideoBridgeOpenCV-4.9.so.1: error: undefined reference to<br>
> 'typeinfo for itk::VideoIOBase'<br>
> collect2: error: ld returned 1 exit status<br>
><br>
> I have checked these methods are implemented in itkVideoIOBase.cxx...<br>
><br>
> Any idea?<br>
><br>
> Thanks<br>
> Arnaud<br>
><br>
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