Thanks. Before I try this, I'm going to try Mac Ports, which was just suggested to me. I think it offers a 4.5.0 prerelease beta from 4/2/2009, which is actually a tad older than I need, but at least it will handle all the dependencies and therefore hopefully set everything up so that when I build manually in the future, things will be ok. Damian On Fri, May 15, 2009 at 9:47 AM, Tim Prince <TimothyPrince@xxxxxxxxxxxxx> wrote: > Damian Rouson wrote: >> >> I get the same error with that approach. I can't figure out how it >> could find the wrong mpfr.h when I'm pointing it to the directory that >> contains the file (and I know the file there is the right version >> since I just installed it). >> >> > > As a last resort, you could install mpfr in /usr so as to over-write the > obsolete version. >