Fortran and separate module files

Neruocomp · 03-06-2005, 06:02 PM

I've been messing around with Fortran and came up with a neat little physics program. There are two cars on the road and the program finds if they will collide given the speed and acceleration and distance between the two. But I have quite a few subroutines and would like to not just put them into a module but have them in separate files. But it doesnt seem to work. I'm using the intel fortran compiler(ver 8.1) and it gives me an error ": undefined reference to `MAIN__' " So whats going on here? I tested this out in windows using FTN95 and Plato and it works.

lasindi · 03-06-2005, 07:41 PM

Why don't you try g77?

lasindi

Neruocomp · 03-06-2005, 11:03 PM

Because fortran 77 is too old haha as ironic as that is.

Neruocomp · 03-07-2005, 04:18 PM

Ok after some playing around I used ifort -c ###.f90 to make an object file out of the individual modules. But now how do I make the main program with these object files?

slackie1000 · 04-14-2005, 08:09 AM

hi there,

a bit old, but looks still not answered...
you can give the parameter "-o "
it means output..

Code:

ifort -o main_program file1.o file2.o file3.o file4.....

regards

slackie1000