$ cmake . -DCMAKE_PREFIX_PATH=/opt/xorg
-- Looking for XOpenDisplay in /usr/lib/libX11.so;/usr/lib/libXext.so
-- Looking for XOpenDisplay in /usr/lib/libX11.so;/usr/lib/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Found X11: /usr/lib/libX11.so
-- all libs: /opt/xorg/lib/libGLU.so;/opt/xorg/lib/libGL.so;/usr/lib/libSM.so;/usr/lib/libICE.so;/usr/lib/libX11.so;/usr/lib/libXext.so
-- GL libs: /opt/xorg/lib/libGL.so
-- Configuring done
-- Generating done