mh@x30:~$ perl -MOpenGL -e 1
Can't load '/home/mh/perl510/lib/site_perl/5.10.0/i686-linux-thread-multi/auto/OpenGL/OpenGL.so' for module OpenGL: /usr/lib/xorg/modules/extensions/libglx.so: undefined symbol: xf86Screens at /home/mh/perl510/lib/5.10.0/i686-linux-thread-multi/DynaLoader.pm line 203.