[MacPorts] #46582: graphviz @2.38.0 Build failure with automake 1.15

[MacPorts]

#46582: graphviz @2.38.0 Build failure with automake 1.15
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  Reporter:  majoc@…                   |      Owner:  ryandesign@…
      Type:  defect                    |     Status:  assigned
  Priority:  Normal                    |  Milestone:
 Component:  ports                     |    Version:  2.3.3
Resolution:                            |   Keywords:
      Port:  graphviz, graphviz-devel  |
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Comment (by majoc@…):

 This is getting weird.  In repeated automated builds from scratch on the
 same system, I'm seeing graphviz fail to build twice the same night,
 succeed the first time, and fail once then succeed an hour or two later in
 the same run.  Might something be out of sync somewhere .... ?

 I've now got some logs from successful builds.  The above diff is between
 two builds from the same base state, which apart from timestamps differ
 only once the build enters the libltdl subdirectory.

 Hope this helps.  If you want the two logfiles as-is, or wish me to repeat
 the exercise with a greater verbosity level, please let me know.

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Ticket URL: <https://trac.macports.org/ticket/46582#comment:12>
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