3.3.3 Backward Compatibility and Legacy Options
The
following options are provided for backward compatibility with earlier compiler
releases, and certain Fortran legacy capabilities.
Table 3-6 Backward Compatibility Options
|
|
|
Preserve actual arguments over ENTRY statements
|
-arg=local
|
|
Allow assignment to constant arguments.
|
–copyargs
|
|
Treat hollerith constant as character or typeless in call argument lists.
|
-xhasc[={yes|no}]
|
|
Support Fortran 77 extensions and conventions
|
-f77
|
|
Nonstandard arithmetic—allow nonstandard arithmetic.
|
–fnonstd
|
|
Optimize performance for the host system.
|
–native
|
|
DO loops—use one trip DO loops.
|
–onetrip
|
|
Allow legacy aliasing situations
|
-xalias=keywords
|
|
Use of these option flags is not recommended for producing portable
Fortran programs.