I have tried building OpenCV 2.4.10 and 3.0.0 beta with the additional modules in opencv_contrib. I have followed the instructions on the page as well but I keep getting an error when I use the make command.
My command (I am within the build directory)
cmake -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ..
--> https://github.com/Itseez/opencv_contrib