http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51779
--- Comment #9 from Tim Williams <zippy at anl dot gov> 2012-01-09 17:15:06 UTC --- (In reply to comment #4) > I forgot to mention that there exist also unofficial binaries for MacOS at: > http://gcc.gnu.org/wiki/GFortranBinaries#MacOS > Thus, that could be an alternative to fixing the MPFR issue. Thanks, Tobias. I did try out the gfortran 4.6.2 from here, and it does compile runnable code. Unfortunately, it still does not work with any version of gdb I have tried on Mac OS X. My end goal in building the whole of gcc 4.6.2 was to try building a Fortran code and debug it with the latest gdb version (7.3.1). No luck with this prebuilt gfortran binary either.