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yet another ddd 3.3.12 MacOS Xt error

From: rbd
Subject: yet another ddd 3.3.12 MacOS Xt error
Date: Tue, 15 Nov 2016 17:12:39 -1000 (HST)
User-agent: Alpine 2.20 (OSX 67 2015-01-07)

[ Already posted the following to bug-ddd, but no response there so I'm following up here -- apologies to anyone reading both lists. ]

I too am getting the same fatal

Xt error: Unresolved inheritance operation

ddd startup-time error under MacOS as many others have reported here recently, using both Sierra and El Capitan. I won't bother repeating the same details that everyone else has already reported, mine are essentially identical.

I do wonder if this has something to do with the fact that on my systems, which use MacPorts for both the ddd and prerequisite OpenMotif package installs, the more recent MacPorts OpenMotif package could only be installed after I had pre-installed libXt (the source of the ddd error) with the modified installation command

# sudo port install xorg-libXt +flat_namespace

(modified with regard to the newly-required +flat_namespace option).

I have two questions for the ddd-on-MacOS community at large:

(1) Is ddd still working for ANYBODY out there on recent MacOS/ddd/XQuartz releases?

(2) Are others, either with or without the ddd Xt inheritance error, using the same +flat_namespace libXt install flag as I did? I'm not certain that ddd stopped working at exactly the same time as I upgraded my OpenMotif with this flag as I use it infrequently under MacOS, but I am suspicious. Not sure that it makes any difference as I can't install OpenMotif without that flag, but it might point the way to the fix.


Roger Davis
Univ. of Hawaii

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