No input files

Sorry, I am a complete novice but when I try to run gfortran (/usr/
local/bin/gfortran) it says I have no input files on my MacBook and
then says I need a different library (7.0.0 when I have 5.0.0 on mine
now) for my G3. Does anyone know what is going on? Please help. Thanks

> Sorry, I am a complete novice but when I try to run gfortran (/usr/
> local/bin/gfortran) it says I have no input files on my MacBook and

This is normal: gfortran is a compiler that makes object code (or even
an executable) for a given input file (or multiple input files). If
you don't give it an input file (your fortran source code) as
parameter on the commandline, then gfortran doen not know which
sourcefile to compile and complains about this. Call:

gfortran test.f90

where test.f90 is the file containing your source code, and the first
problem is solved! Did yuo perhaps just double-click on the gfortran
icon? That will not work. To pass arguements to the compiler you'll
have to call it from a shell.



> then says I need a different library (7.0.0 when I have 5.0.0 on mine
> now) for my G3. Does anyone know what is going on? Please help. Thanks

No idea. Sorry. I use MinGW/MSYS on a Windows box...


Arjan