javac doesn't support the "internalantrunner" attribute

I got the error message above when trying to build the ant build from eclipse and in the command line. I could not find a solution on it on the web. What could be the pr开发者_如何学JAVAoblem?

-Brevis Iunius

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Some glassball guessing:

It looks like you have an internalantrunner attribute on your javac task element, and this attribute is not supported by the javac task.

If you created your ant buildfile yourself, simply remove this attribute. If it was generated by something else, check the versions of this software.