Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

ID 767251
Date 7/13/2023
Public

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Document Table of Contents

f77rtl

Tells the compiler to use the runtime behavior of FORTRAN 77.

Syntax

Linux:

-f77rtl

-nof77rtl

macOS:

-f77rtl

-nof77rtl

Windows:

/f77rtl

/nof77rtl

Arguments

None

Default

nof77rtl

The compiler uses the runtime behavior of Intel® Fortran.

Description

This option tells the compiler to use the runtime behavior of FORTRAN 77.

Specifying this option controls the following runtime behavior:

  • When the unit is not connected to a file, some INQUIRE specifiers will return different values:

    • NUMBER= returns 0

    • ACCESS= returns 'UNKNOWN'

    • BLANK= returns 'UNKNOWN'

    • FORM= returns 'UNKNOWN'

  • There is no support for the PAD= qualifier. FORTRAN 77 does not pad formatted input.

  • NAMELIST and list-directed input of character strings must be delimited by apostrophes or quotes.

  • When processing NAMELIST input:

    • Column 1 of each record is skipped.

    • The '$' or '&' that appears prior to the group-name must appear in column 2 of the input record.

IDE Equivalent

Visual Studio: Compatibility > Enable F77 Run-Time Compatibility

Alternate Options

None