I have tried following cmake command :
cmake -D WITH_GTK3=ON -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D BUILD_NEW_PYTHON_SUPPORT=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON ..
but I got following warning :
CMake Warning: Manually-specified variables were not used by the project: WITH_GTK3
Is it possible to build OpenCV-2.4.13 with GTK3+ support ? I am try to build it on Raspbian Jessie on Raspberry Pi 2 B.