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

D

Defines a symbol name that can be associated with an optional value.

Syntax

Linux:

-Dname[=value]

macOS:

-Dname[=value]

Windows:

/Dname[=value]

Arguments

name

Is the name of the symbol.

value

Is an optional integer or an optional character string delimited by double quotes; for example, Dname=string.

Default

noD

Only default symbols or macros are defined.

Description

Defines a symbol name that can be associated with an optional value. This definition is used during preprocessing in both Intel® Fortran conditional compilation directives and the fpp preprocessor. The Dname=value will be ignored if there are any non-alphabetic, non-numeric characters in name.

If a value is not specified, name  is defined as "1".

If you want to specify more than one definition, you must use separate D options.

If you specify noD, all preprocessor definitions apply only to fpp and not to Intel® Fortran conditional compilation directives. To use this option, you must also specify the fpp option.

CAUTION:

Linux and macOS

If you are not specifying a value, do not use D for name, because it will conflict with the -DD option.

IDE Equivalent

Visual Studio: General > Preprocessor Definitions

Preprocessor> Preprocessor Definitions

Preprocessor > Preprocessor Definitions to FPP only

Alternate Options

D

Linux and macOS: None
Windows: /define:name[=value]

noD

Linux and macOS: -nodefine
Windows: /nodefine