how to build only Xvfb

[gxk]

Hi
I am trying to build minimized Xvfb. Follows list done till now:
util/macros
freetype-2.2.1
lib/libXfont
lib/libxkbui
lib/libXt
xserver

I am trying to run it , like `startx -- /opt/x/bin/Xvfb' , but
getting error:
     _XSERVTransSocketOpenCOTSServer: Unable to open socket for inet6
     _XSERVTransOpen: transport open failed for 
inet6/gxk-dt-lnx.softier1.local:0
     _XSERVTransMakeAllCOTSServerListeners: failed to open listener for 
inet6
     Could not init font path element /opt/x86/x/lib/X11/fonts/misc/, 
removing from list!
     Could not init font path element /opt/x86/x/lib/X11/fonts/TTF/, 
removing from list!
     Could not init font path element /opt/x86/x/lib/X11/fonts/OTF, 
removing from list!
     Could not init font path element /opt/x86/x/lib/X11/fonts/Type1/, 
removing from list!
     Could not init font path element /opt/x86/x/lib/X11/fonts/CID/, 
removing from list!
     Could not init font path element /opt/x86/x/lib/X11/fonts/100dpi/, 
removing from list!
     Could not init font path element /opt/x86/x/lib/X11/fonts/75dpi/, 
removing from list!

     Fatal server error:
     could not open default font 'fixed'
     XIO:  fatal IO error 104 (Connection reset by peer) on X server ":0.0"
           after 0 requests (0 known processed) with 0 events remaining.