[NSDictionary DictionaryWithContentsOfFile] question

[Lloyd Dupont]

Hi There!

I'm porting MacOSX software to windows.
This application use XML-format plist format.

I followed the source from [NSDictionary dictionaryWithContentsOfFile:..] 
from call to call.
And I ended up in
[NSPropertyListSerialixation 
propertyListFromData:mutabilityOption:format:errorDescription:]

Which has some #ifndef HAVE_LIBXML, so that let me to believe the XML 
loading should be supported.
However when I tried to load a XML property list, the result was null :-(
And the error message is:
XML format not supported ... XML support not present

How could I enable it?
Thanks!