>> I build tcsh static and install in /bin,, because I use it as root's
>> login shell. That works fine.
.
>What's the best way to do this under elf? I think I know how to do it
>under a.out, but I'm not sure under elf.

cc -static.  make CC="cc -static" worked for me.

Or, as Ted suggested, tweak the Makefile to not use tcsh's internal
malloc.