(g77.info)Invoking G77

GNU Fortran Command Options
***************************

   The `g77' command supports all the options supported by the `gcc'
command.  Note: GNU CC Command Options, for
information on the non-Fortran-specific aspects of the `gcc' command
(and, therefore, the `g77' command).

   All `gcc' and `g77' options are accepted both by `g77' and by `gcc'
(as well as any other drivers built at the same time, such as `g++'),
since adding `g77' to the `gcc' distribution enables acceptance of
`g77'-specific options by all of the relevant drivers.

   In some cases, options have positive and negative forms; the
negative form of `-ffoo' would be `-fno-foo'.  This manual documents
only one of these two forms, whichever one is not the default.



* Option Summary
Brief list of all `g77' options,
without explanations.
* Overall Options
Controlling the kind of output:
an executable, object files, assembler files,
or preprocessed source.
* Shorthand Options
Options that are shorthand for other options.
* Fortran Dialect Options
Controlling the variant of Fortran language
compiled.
* Warning Options
How picky should the compiler be?
* Debugging Options
Symbol tables, measurements, and debugging dumps.
* Optimize Options
How much optimization?
* Preprocessor Options
Controlling header files and macro definitions.
Also, getting dependency information for Make.
* Directory Options
Where to find header files and libraries.
Where to find the compiler executable files.
* Code Gen Options
Specifying conventions for function calls, data layout
and register usage.
* Environment Variables
Env vars that affect GNU Fortran.



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