can't find expat header

[Michael Thon]

>>
>> This is most probably a bison bug (solved Febr 2008 for OSX). The
>> bison version that comes with XCode is too old. Try using the bison
>> from macports: "sudo port install bison" and try again.
>
> And/or "sudo port install flex" since the error mentioned flex.
>
> If you do get this to compile on Mac OS X, please consider writing a
> portfile so that other Mac users can benefit without having to figure
> it out on their own. Or, at least tell us here what you had to do and
> someone else can write a portfile. Or you can file a port request
> ticket and provide your notes there.
>

Still no joy.  I already had bison and flex installed.  I recompiled  
then with port -f upgrade bison flex just to be sure  but compilation  
still stops at the same point.

If I can get it to compile I will definitely write a portfile for it.   
I have portfiles for a few other packages that I need to share too.

Mike