RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler Command-line Options
See also
• --arm on page 2-7
• #pragma arm on page 4-50
• #pragma thumb on page 4-62
• Specifying the target processor or architecture on page 2-22 in the Compiler User
Guide
• Selecting the target CPU on page 4-3 in the Compiler User Guide.
2.1.116 -Uname
This option removes any initial definition of the macro name.
The macro name can be either:
• a predefined macro
• a macro specified using the -D option.
Note
Not all compiler predefined macros can be undefined.
Syntax
-Uname
Where:
name
is the name of the macro to be undefined.
Usage
Specifying -Uname has the same effect as placing the text #undef name at the head of each
source file.
Restrictions
The compiler defines and undefines macros in the following order:
1. compiler predefined macros
2. macros defined explicitly, using -Dname
3. macros explicitly undefined, using -Uname.
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