[plt-scheme] build problem - Debian

I'm having troubles building from the latest CVS sources.  The error I am
getting is below.  It seems that MzScheme gets built but not MrEd and friends. 
I am trying to get the web-server running, so perhaps there is a way to do this
without graphical PLT?

TIA,
David

gcc -c  -I./../../mzscheme/gc -I./../../wxxt/src/AIAI-include -I./../../wxxt/src
-I./../../mred/wxme/ -I./../../mzscheme/include/ -DOPERATOR_NEW_ARRAY 
-fpermissive -DNO_XKB_LIB_PRESENT -Dwx_xt -g -O2 -Wall  -I./XWidgets -o
XWidgets/xwTabString.o ./XWidgets/xwTabString.c
./XWidgets/xwTabString.c:6: X11/Intrinsic.h: No such file or directory
./XWidgets/xwTabString.c:7: X11/StringDefs.h: No such file or directory
make[5]: *** [XWidgets/xwTabString.o] Error 1