make: don't know how to make .tgz (prerequisite of: _internal-package-only)

Greetings,

I'm trying to update math/eigen3 (which makes use of PSEUDO_FLAVORS).

Even using the version currently in the tree, when I try to make the
package, the following error is issued:

> $ make package
> make: don't know how to make /usr/ports/packages/amd64/all//eigen3-3.2.2p5.tgz (prerequisite of: _internal-package-only)
> Stop in .
> *** Error 2 in . (/usr/ports/infrastructure/mk/bsd.port.mk:2623 '_internal-package')
> *** Error 2 in /usr/ports/math/eigen3 (/usr/ports/infrastructure/mk/bsd.port.mk:2602 'package')

Could you please give me some hints? I read the FAQ (probably not very
carefully, I have to admit...), but I didn't find anything relevant for
this specific problem.

Cheers

--
Alessandro De Laurenzis
[mailto:just22@atlantide.mooo.com]
Web: http://www.atlantide.mooo.com
LinkedIn: http://it.linkedin.com/in/delaurenzis