Linking CXX executable ../../../../../../bin/Sample-Players
/usr/bin/ld: CMakeFiles/Sample-Players.dir/main.cpp.o: référence au symbole non défini «glOrtho»
/usr/lib/x86_64-linux-gnu/libGL.so.1: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[2]: *** [bin/Sample-Players] Erreur 1
make[1]: *** [nestk/deps/openni/Nite/Samples/Players/CMakeFiles/Sample-Players.dir/all] Erreur 2
make: *** [all] Erreur 2