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        Tue, 01 Mar 2016 11:43:10 -0800 (PST)
Date: Tue, 1 Mar 2016 22:43:08 +0300
From: "Vladimir Zhbanov (vzhbanov AT gmail DOT com) [via geda-help AT delorie DOT com]" <geda-help AT delorie DOT com>
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Subject: Re: [geda-help] gaf not built
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On Tue, Mar 01, 2016 at 11:43:38AM -0700, John Doty wrote:
> I’ve lately been seeing some trouble on OSX also (with 1.8.2). I think the problems may be related to a newer gtk that tries to render directly through Quartz rather than using X11. I haven’t had time to track this down.

Yes, the errors James mentioned seem to be related to Quartz:

<quote>

Feb 29 21:46:33 jbattat-mbp-r.home gschem[27705] <Error>: CGContextRestoreGState: invalid context
+0x7ffcb3d72850. This is a serious error. This application, or a library it uses, is using an invalid
+context  and is thereby contributing to an overall degradation of system stability and reliability. This
+notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.
Feb 29 21:46:33 jbattat-mbp-r.home gschem[27705] <Error>: CGContextSetAllowsAntialiasing: invalid context
+0x7ffcb3d72850. This is a serious error. This application, or a library it uses, is using an invalid
+context  and is thereby contributing to an overall degradation of system stability and reliability. This
+notice is a courtesy: please fix this problem. It will become a fatal error in an upcoming update.

</quote>

Looking further, I saw many bug reports for many programs using
the gtk+ quartz backend, and everybody seemed to fight them
alone. I saw people changed the list of used libraries and
appended code especially for MacOS.

BTW, I've found a page which would be of some interest for the
MacOS geda-gaf testers [1].

  Vladimir

[1] https://wiki.gnome.org/action/show/Projects/GTK+/OSX