> On Nov 3, 2008, at 3:36 PM, Gustavo Seabra wrote: > >>> For your fortran issue, the Fortran 90 interface needs the Fortran 77 >>> interface. So you need to supply an F77 as well (the output from >>> configure >>> should indicate that the F90 interface was disabled because the F77 >>> interface was disabled). >> >> Is that what you mean (see below)? > > Ah yes -- that's another reason the f90 interface could be disabled: > if configure detects that the f77 and f90 compilers are not link- > compatible. > >> I thought the g95 compiler could >> deal with F77 as well as F95... If so, could I just pass F77='g95'? > > That would probably work (F77=g95). I don't know the g95 compiler at > all, so I don't know if it also accepts Fortran-77-style codes. But > if it does, then you're set. Otherwise, specify a different F77 > compiler that is link compatible with g95 and you should be good.
Fortran 90 is a superset of the archaic, hamstrung, "I'm too old to learn how to program in a useful manner and I still use punched cards" Fortran 77. All Fortran 90 compilers are Fortran 77 compilers, by definition. Fortran 95 has a few (~5) deleted features and a few minor added features. I've never heard of a Fortran 95 compiler that wasn't a Fortran 90 compiler, and thus a Fortran 77 compiler. Take g77 and throw it away. While it's not particularly buggy, it hasn't been maintained for years and should be out-performed by a more modern compiler such as g95 or gfortran.
