I'd like to get a version of gfortran working under Snow Leopard. I had an older version installed that wasn't work. So, I first removed *gfort* from /usr/local/bin, /usr/local/lib, and /usr/local/include. Then I followed the instructions on this page: http://hpc.sourceforge.net/ using the "Snow Leopard gfortran only" binary, since my other gcc compilers (that came with XCode?) are working fine. When I try to compile a fortran program (for example, this file: http://www.personal.psu.edu/jhm/f90/examples/add.f ), I get the following messages: $ gfortran add.f /usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld: warning unknown -macosx_version_min parameter value: 10.6.2 ignored (using 10.4) /usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld: /usr/local/lib/libgfortran.dylib bad magic number (not a Mach-O file) /usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld: /usr/lib/gcc/i686-apple-darwin10/4.2.1/../../../libSystem.dylib unknown flags (type) of section 5 (__TEXT,__dof_magmalloc) in load command 0 /usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld: /usr/lib/gcc/i686-apple-darwin10/4.2.1/../../../libSystem.dylib unknown flags (type) of section 5 (__TEXT,__dof_magmalloc) in load command 0 collect2: ld returned 1 exit status Maybe I didn't completely uninstall the older version of gfortran? Any help would be greatly appreciated. Best, Robert
