libiodbc suddenly needs gtk2+x11

[mk-macports at techno.ms]

Hi,

I just noticed that
---
sudo port update libiodbc
---

failed:

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:debug:main Searching for dependency: gtk2
:debug:main Found Dependency: receipt exists for gtk2
:msg:main
:debug:main Executing org.macports.main (libiodbc)
:debug:main changing euid/egid - current euid: 0 - current egid: 0
:debug:main egid changed to: 505
:debug:main euid changed to: 511
:debug:archivefetch archivefetch phase started at Tue Jun  4 00:19:57 CEST 2013
:debug:archivefetch Executing proc-pre-org.macports.archivefetch-archivefetch-0
:debug:archivefetch gtk2 is installed with the following variants: +no_x11+quartz
:debug:archivefetch   required: x11, forbidden:
:debug:archivefetch   rejected, because required variant x11 is missing
:error:archivefetch org.macports.archivefetch for port libiodbc returned: gtk2 must be installed with +x11.
:debug:archivefetch Error code: NONE:debug:archivefetch Backtrace: gtk2 must be installed with +x11.
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Why does libiodbc suddenly need gtk2 in its x11 variant? This wasn't the case up to now…

What can be done do get libiodbc built w/o x11?

Greets,
Marko