[MacPorts] #56888: gtk-engines2 won't install

[MacPorts]

#56888: gtk-engines2 won't install
--------------------+-------------------------
 Reporter:  fdesar  |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.5.3
 Keywords:          |       Port:  gtk-engine2
--------------------+-------------------------
 OS X 10.11.6 (El Capitan)

 gtk-engines2 fails to install with fatal configuration error.

 I did "port selfupdate" and "port upgrade outdated" and it still won't
 build.

 I found a little similar problem (while not strictly) with ticket #56167
 issued 4 months ago with no concrete answer yet.

 I also see that there is no maintainer assigned to this port which is
 mandatory to build some native .app for OS X like inkscape.

 It seems it is a fatal error in the configure phase so I join the main.log
 and config.log files.

 Any clue or workaround appreciated

-- 
Ticket URL: <https://trac.macports.org/ticket/56888>
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