Defines a macro name that can be associated with an optional value.
IDE Equivalent
Windows: Preprocessor > Preprocessor Definitions
Linux: Preprocessor > Preprocessor Definitions
Mac OS X: Preprocessor > Preprocessor Definitions
Architectures
IA-32, Intel® 64 architectures
Syntax
Linux and Mac OS X: | -Dname[=value] |
Windows: | /Dname[=value] |
Arguments
name |
Is the name of the macro. |
value |
Is an optional integer or an optional character string delimited by double quotes; for example, Dname=string. |
Default
OFF |
Only default symbols or macros are defined. |
Description
Defines a macro name that can be associated with an optional value. This option is equivalent to a #define preprocessor directive.
If a value is not specified, name is defined as "1".
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 option fpp.
Caution
On Linux* and Mac OS* X systems, if you are not specifying a value, do not use D for name, because it will conflict with the -DD option.
Alternate Options
None
Example
To define a macro called SIZE with the value 100, enter the following command:
On Windows* systems:
icl /DSIZE=100 prog1.cpp
On Linux* and Mac OS* X systems:
icpc -DSIZE=100 prog1.cpp
If you define a macro, but do not assign a value, the compiler defaults to 1 for the value of the macro.