FORTRAN 77 Upward Compatibility

The FORTRAN 77 5.0 source is compatible with earlier releases, except for minor changes due to operating system changes and bug fixes.

Fortran 3.0/3.0.1 to 4.0

Executables (a.out), libraries (.a), and object files (.o) compiled and linked in Fortran 3.0/3.0.1 under Solaris 2 are compatible with Fortran 5.0 under Solaris 2.

BCP: Running Applications from Solaris 1 in 2

You must install the Binary Compatibility Package for the executable to run.

Executables compiled and linked in Solaris 1 do run in Solaris 2, but they do not run as fast as when they are compiled and linked under the appropriate Solaris release.

Libraries (.a) and object files (.o) compiled and linked in Fortran 2.0.1 under Solaris 1 are not compatible with Fortran 5.0.