F77(1)F77(1)NAMEf77 - FORTRAN 77 compiler
SYNOPSIS
Sun[tm] Studio software no longer includes a separate FORTRAN 77 com‐
piler, f77. Recent releases migrated many FORTRAN 77 features into the
Fortran 95 compiler, f95. Much of the functionality of the f77 compiler
is now available with the Fortran 95 compiler.
With current Sun Studio compiler releases, the f77 command calls the
f95 compiler with an appropriate set of defaults:
f95 -f77 -ftrap=%none
If it is necessary to link to library routines that were compiled with
a previously released f77 compiler, add -xlang=f77 to the command line.
However, if you are compiling and linking in separate steps and explic‐
itly specify -xlang=f77, or -lM77, or -lF77, or -lsunmath, you must
link with f95 (or the f77 script) and not with cc or CC.
If you are also compiling with the -fast flag, add -ftrap=%none after
-fast to retain Fortran 77's trapping behavior on arithmetic excep‐
tions. -fast sets the trapping mode to "common".
f77-fast -ftrap=%none
Invoking the f77 script issues a message to alert you to the fact that
you are using the f95 compiler in -f77 compatibility mode. You can dis‐
able this message by adding
-errtags=INVOKE to the command line.
See the f95(1) man page for more information.
July 2004 F77(1)
