one idea

I tried to build last openssl with
	make CC='diet -Os gcc -nostdinc -s' 
and it fails.  The problem was that Makefile expected one
variable for CC.  Instead of fixing Makefile I tried:

	echo '#!/bin/sh' > /tmp/xgcc
	echo 'exec diet -Os gcc -nostdinc -s ${1+"$@"}' > /tmp/xgcc
	chmod 755 /tmp/xgcc

	make CC=/tmp/xgcc

and the problem was solved.  I think a little after that and come
to the idea to introduce one new environ variable in diet: DIET_CC.
Using it we should type

        DIET_CC='-Os gcc -nostdinc -s' make CC=diet

Then we see on terminal only 'diet' instead 'diet -Os gcc -nostdinc'.
It solves also the problem described above.  If such idea is accepted 
I'll ready to make changes in diet.c.  It's not difficult.

Nikola

PS:  a script to build diet openssh:
http://riemann.fmi.uni-sofia.bg/programs/getssh.diet