HI Paul, For now I think that just noting that Aquaterm is needed is OK.... The Aquaterm terminal is nice, but we need X11 anyway, so using the X terminal seems OK too. That is, I don't have a strong opinion on this. Adding the Aquaterm terminal to the installer seems fine. I haven't tried building on a OS 10.4 machine. Maybe I'll get a chance next week, if not it'll have to wait until January. It sounds like it may mean another set of changes to configure.... yuck.
In the long term another question is to switch to g95 (stable and works) or gfortran (improving) for the fortran compilation. Mixing binaries from gcc3 and gcc4 is not officially supported (from what I understand) and at the very least leads to lots of saveFP restFP linkage errors (as Apple's compiler is gcc4) -- this is fixable by linking in the /usr/lib/libgcc.a manually but is hardly clean. I didn't explore it very well, but there are problems using other compilers as well (absoft and the #$@% underscore conventions) as well as g95 (almost works, but I still got some saveFP restFP errors that originated from something in ifeffit that I didn't take the time to track down). I can start hacking the mac ifeffit script, but as only those first three issues are of importance now, it is probably easier for you to fix.
I have not played with gcc4 or g95 or gfortran yet. I'd lean towards using gfortran (ie, the one that's part of gcc). I'd guess that's the easiest compatibility route, but in any case there is just not that much "special" (mixed C/Fortran, Fortran calling system stuff) to really concern me. It might take a little doing to move to gfortran, but I'm sure it will work. --Matt