mzc problems with RH 6.1

[Noel Welsh <noelw@dai.ed.ac.uk>]

>I am having trouble compiling simple mzscheme extenstions (hello.c) in my RH
>6.1 system.

I don't know what is causing mzc to complain that it is unable to find 
mzc.h, but would downloaindg and reinstalling not fix this problem? 

Regarding getting mzc to work w/ your hello.c, if you like, send me
your hello.c and I'll try it on my Suse 6.3 system (gcc 2.7.2, glibc
2.1). That way we can determine if it is a gcc problem, or a problem
w/ your system.

cya,
Noel