This is a nested element which can be used in the compile task to specify defined identifiers
in the preprocessor.
| Attribute | Description | Required | 
|---|---|---|
| name | The name of the identifier to define. | 
      Yes. | 
| value | 
      The value to set it to. If it
isn't set to anything, it will correspond to a simple: #define name  | 
      No. | 
    
This will compile the file Hello.cpp with the preprocessor identifier DEBUG_TRACE set to 1.<compile objdir="tmp/obj"> <srcfiles dir="source" includes="Hello.cpp"/> 
<define name="DEBUG_TRACE" value="1"/>
</compile>