/home/igor/git/opencertiface/biometrics/openbr/plugins/imgproc/custom_sift.cpp:108:39: fatal error: opencv2/nonfree/nonfree.hpp: Arquivo ou diretório não encontrado
compilation terminated.
openbr/CMakeFiles/openbr.dir/build.make:2568: recipe for target 'openbr/CMakeFiles/openbr.dir/plugins/imgproc/custom_sift.cpp.o' failed
make[2]: *** [openbr/CMakeFiles/openbr.dir/plugins/imgproc/custom_sift.cpp.o] Error 1
CMakeFiles/Makefile2:981: recipe for target 'openbr/CMakeFiles/openbr.dir/all' failed
make[1]: *** [openbr/CMakeFiles/openbr.dir/all] Error 2
Makefile:146: recipe for target 'all' failed
make: *** [all] Error 2
Ao compilar o programa eu recebi o seguinte erro: