When I compile VLC, I have this error:
gcc -Wsign-compare -Wall -pipe -o libopengl_plugin.so libopengl_plugin.a -L/usr/lib -shared -lpthread -fpic -fPIC -L/usr/X11R6/lib -lGL -lGLU -u vlc_entry__0_8_4
/usr/bin/ld: cannot find -lGL
collect2: ld returned 1 exit status
make[4]: *** [libopengl_plugin.so] Error 1
make[4]: Leaving directory `/home/loacoon/Desktop/vlc-0.8.4a/modules/video_output'
make[3]: *** [all-modules] Error 1
make[3]: Leaving directory `/home/loacoon/Desktop/vlc-0.8.4a/modules/video_output'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/loacoon/Desktop/vlc-0.8.4a/modules'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/loacoon/Desktop/vlc-0.8.4a'
make: *** [all] Error 2
What am I supposed to do???