[xcrysden] Compilation problem in Xcrysden 1.6

[Mahmoud Payami]

Dear Tone,

I have tried to compile the source file using "possibility-2" using 
"Make.linux-static" as "Make.sys" and disabled all in "possibility-1". The 
compilation goes well until the end which the message appears:
togl.c:40:76: error :X11/Xmu/StdCmap.h: No such file or directory.
I have also tried other compiling possibilities but "static" one seemed less 
problematic.
I would be grateful if you please help me to resolve it.
Bests,
         Mahmoud Payami