loading ant macros from external files

Hello,

I have a bunch of ANT macros which are currently used by 1 project only.
In the future they should be used by more projects.
So I'd like to put them in a separate ANT script and load this at runtime into the
project ANT scripts.

Has anyone an idea how to manage this?

In the ANT manual I only found possibilities to load properties from external files
but not macros.

Best regards

///Sascha Ernst///