Download newest OpenCV 2.4.7.2 from
git clone https://github.com/Itseez/opencv/commit/8f10ca5180d3c62e97f6a2099b5beb225b7df26b
(source) https://github.com/Homebrew/homebrew/wiki/Custom-GCC-and-cross-compilers
brew tap homebrew/versions && brew install gcc48
cmake -G "Unix Makefiles" -D WITH_CUDA=ON -D CUDA_HOST_COMPILER=/usr/bin/gcc ..
cmake -G "Unix Makefiles" -D WITH_CUDA=OFF ..