Am 14.11.2017 um 12:00 schrieb Date: Sun, 12 Nov 2017 08:56:49 -0500 From: brian To: FPC-Pascal users discussions Subject: [fpc-pascal] FORTRAN from FreePascal Message-ID: Content-Type: text/plain; charset=utf-8 I need to try to put a user-friendly GUI and some graphical output onto an old command-line FORTRAN number cruncher, and have been provided with around 130 KB of FORTRAN source code. A quick scan of documentation seems to suggest that this is possible using gfortran and the C calling conventions (if someone knows differently, please say so right now!) :) My knowledge of FORTRAN-77 is sound, if rather rusty, but I know almost nothing about C programming, having been brought up as a chemist before I was dragged across to programming (I learned to program on Algol-60, BASIC and FORTRAN-IV, yes, that long ago ): ). Anyone with any past experience here? It seems I have two choices, to try to call the FORTRAN subroutines from FreePascal or to port the FORTRAN code to Pascal, I'm looking for advice... Thanks, Brian.