OpenCV fails to build using Cmake-GUI in mac OSx (Bug #4014)

I have to use Cmake GUI and compilers gcc,g++ and gfortran given with Macports. I'm able to configure and generate the binaries well. When I goto my bin folder to build the library (sudo make OR sudo make -j4 etc.) I get the following error -

Building CXX object modules/video/CMakeFiles/opencv_video.dir/src/camshift.cpp.o
Linking CXX shared library ../../lib/libopencv_imgcodecs.dylib
/Users/imecindia/Desktop/Downloaded Libraries/opencv-3.0.0-beta/modules/video/src/bgfg_gaussmix2.cpp: In member function 'void cv::BackgroundSubtractorMOG2Impl::initialize(cv::Size, int)':
/Users/imecindia/Desktop/Downloaded Libraries/opencv-3.0.0-beta/modules/video/src/bgfg_gaussmix2.cpp:196:63: error: 'bgfg_mog2_oclsrc' is not a member of 'cv::ocl::video'
             kernel_getBg.create("getBackgroundImage2_kernel", ocl::video::bgfg_mog2_oclsrc, format( "-D CN=%d -D NMIXTURES=%d", nchannels, nmixtures));
                                                               ^
/Users/imecindia/Desktop/Downloaded Libraries/opencv-3.0.0-beta/modules/video/src/bgfg_gaussmix2.cpp: In member function 'void cv::BackgroundSubtractorMOG2Impl::create_ocl_apply_kernel()':
/Users/imecindia/Desktop/Downloaded Libraries/opencv-3.0.0-beta/modules/video/src/bgfg_gaussmix2.cpp:821:40: error: 'bgfg_mog2_oclsrc' is not a member of 'cv::ocl::video'
     kernel_apply.create("mog2_kernel", ocl::video::bgfg_mog2_oclsrc, opts);
                                        ^
[ 55%] Built target opencv_photo
[ 55%] Building CXX object modules/video/CMakeFiles/opencv_video.dir/src/compat_video.cpp.o
make[2]: *** [modules/video/CMakeFiles/opencv_video.dir/src/bgfg_gaussmix2.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
[ 56%] Built target opencv_imgcodecs
Scanning dependencies of target opencv_videoio
[ 56%] [ 56%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap.cpp.o
Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_images.cpp.o
make[1]: *** [modules/video/CMakeFiles/opencv_video.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
Linking CXX shared library ../../lib/libopencv_videoio.dylib
[ 56%] Built target opencv_videoio
make: *** [all] Error 2

Why is this happening? I'm able to build it on Ubuntu easily.