Other Dialects

GNU Fortran supports a variety of features that are not considered part of the GNU Fortran language itself, but are representative of various dialects of Fortran that g77 supports in whole or in part.

Any of the features listed below might be disallowed by g77 unless some command-line option is specified. Currently, some of the features are accepted using the default invocation of g77, but that might change in the future.

Note: This portion of the documentation definitely needs a lot of work!

• Source Form: Details of fixed-form and free-form source.
• Trailing Comment: Use of `/*' to start a comment.
• Debug Line: Use of `D' in column 1.
• Dollar Signs: Use of `$' in symbolic names.
• Case Sensitivity: Uppercase and lowercase in source files.
• VXT Fortran: ...versus the GNU Fortran language.
• Fortran 90: ...versus the GNU Fortran language.
• Pedantic Compilation: Enforcing the standard.
• Distensions: Misfeatures supported by GNU Fortran.

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