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Using the GNU Compiler Collection (GCC)

3.3 Shorthand Options

The following options serve as "shorthand" for other options accepted by the compiler:

-fugly

Note: This option is no longer supported. The information, below, is provided to aid in the conversion of old scripts.

Specify that certain "ugly" constructs are to be quietly accepted. Same as:

-fugly-args -fugly-assign -fugly-assumed -fugly-comma -fugly-complex -fugly-init -fugly-logint

These constructs are considered inappropriate to use in new or well-maintained portable Fortran code, but widely used in old code. @xref{Distensions}, for more information.

-fno-ugly

Specify that all "ugly" constructs are to be noisily rejected. Same as:

-fno-ugly-args -fno-ugly-assign -fno-ugly-assumed -fno-ugly-comma -fno-ugly-complex -fno-ugly-init -fno-ugly-logint

@xref{Distensions}, for more information.

-ff66

Specify that the program is written in idiomatic FORTRAN 66. Same as `-fonetrip -fugly-assumed'.

The `-fno-f66' option is the inverse of `-ff66'. As such, it is the same as `-fno-onetrip -fno-ugly-assumed'.

The meaning of this option is likely to be refined as future versions of g77 provide more compatibility with other existing and obsolete Fortran implementations.

-ff77

Specify that the program is written in idiomatic UNIX FORTRAN 77 and/or the dialect accepted by the f2c product. Same as `-fbackslash -fno-typeless-boz'.

The meaning of this option is likely to be refined as future versions of g77 provide more compatibility with other existing and obsolete Fortran implementations.

-fno-f77

The `-fno-f77' option is not the inverse of `-ff77'. It specifies that the program is not written in idiomatic UNIX FORTRAN 77 or f2c but in a more widely portable dialect. `-fno-f77' is the same as `-fno-backslash'.

The meaning of this option is likely to be refined as future versions of g77 provide more compatibility with other existing and obsolete Fortran implementations.