NAME
f77 - FORTRAN 77 compiler
SYNOPSIS
Sun[tm] Studio software no longer includes a separate FOR-
TRAN 77 compiler, 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 explicitly 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 exceptions. -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 compatibil-
ity mode. You can disable this message by adding
-errtags=INVOKE to the command line.
See the f95(1) man page for more information.