-DCMAKE_OSX_SYSROOT='/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/'
-DCMAKE_OSX_DEPLOYMENT_TARGET=10.9
-DOPENCV_EXTRA_C_FLAGS='-mmacosx-version-min=10.9'
-DOPENCV_EXTRA_CXX_FLAGS='-mmacosx-version-min=10.9'