U

Undefines any definition currently in effect for the specified symbol.

IDE Equivalent

Windows: Preprocessor > Undefine Preprocessor Definitions

Linux: None

Mac OS X: Preprocessor > Undefine Preprocessor Definitions

IA-32, Intel® 64 architectures

Linux and Mac OS X:

-Uname

Windows:

/Uname

name

Is the name of the symbol to be undefined.

OFF	Symbol definitions are in effect until they are undefined.

This option undefines any definition currently in effect for the specified symbol.

On Windows systems, use the /u option to undefine all previously defined preprocessor values.

Linux and Mac OS X: None

Windows: /undefine:name