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I have been trying to build opencv for over a week now using the instructions at

http://docs.opencv.org/doc/tutorials/introduction/linux_install/linux_install.html and http://miloq.blogspot.com/2012/12/install-opencv-ubuntu-linux.html however every time I get to the 'make' step, I get an error:

In file included from /home/sello/opencv-2.4.9/modules/nonfree/perf/perf_main.cpp:28:0:
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp: In function ‘void dumpOpenCLDevice()’:
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:88:9: error: ‘PlatformsInfo’ is not a member of ‘cv::ocl’
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:88:32: error: expected ‘;’ before ‘platforms’
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:89:9: error: ‘getOpenCLPlatforms’ is not a member of ‘cv::ocl’
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:89:37: error: ‘platforms’ was not declared in this scope
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:95:19: error: ‘DevicesInfo’ in namespace ‘cv::ocl’ does not name a type
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:96:39: error: ‘devices’ was not declared in this scope
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:98:23: error: ‘DeviceInfo’ in namespace ‘cv::ocl’ does not name a type
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:99:33: error: ‘current_device’ was not declared in this scope
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:99:62: error: ‘CVCL_DEVICE_TYPE_CPU’ was not declared in this scope
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:100:71: error: ‘CVCL_DEVICE_TYPE_GPU’ was not declared in this scope
In file included from /home/sello/opencv-2.4.9/modules/nonfree/perf/perf_main.cpp:28:0:
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:108:15: error: ‘DeviceInfo’ in namespace ‘cv::ocl’ does not name a type
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:110:9: error: ‘deviceInfo’ was not declared in this scope
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:111:9: error: ‘deviceInfo’ was not declared in this scope
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:113:25: error: ‘deviceInfo’ was not declared in this scope
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:113:50: error: ‘CVCL_DEVICE_TYPE_CPU’ was not declared in this scope
/home/sello/opencv-2.4.9/modules/ocl/include/opencv2/ocl/private/opencl_dumpinfo.hpp:114:61: error: ‘CVCL_DEVICE_TYPE_GPU’ was not declared in this scope
make[2]: *** [modules/nonfree/CMakeFiles/opencv_perf_nonfree.dir/perf/perf_main.cpp.o] Error 1
make[1]: *** [modules/nonfree/CMakeFiles/opencv_perf_nonfree.dir/all] Error 2
make: *** [all] Error 2

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