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|
Action |
Option |
|---|---|
|
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.
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