[MacPorts] #59130: lilypond-devel @2.19.83_2: error: expected initializer before '__OSX_AVAILABLE_STARTING'

[MacPorts]

#59130: lilypond-devel @2.19.83_2: error: expected initializer before
'__OSX_AVAILABLE_STARTING'
---------------------+----------------------------
 Reporter:  dliessi  |      Owner:  nerdling
     Type:  defect   |     Status:  assigned
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  lilypond-devel
---------------------+----------------------------
 A user reported this build error [https://lists.gnu.org/archive/html
 /lilypond-user/2019-09/msg00314.html here], attaching the main.log file
 [https://lists.gnu.org/archive/html/lilypond-user/2019-09/msg00322.html
 here] (I attach that file to this ticket).
 I'll take care of keeping the user informed of the development of this
 ticket.

 This does ''not'' seem a duplicate of #58913.

 MacOS 10.14.6
 Xcode 11.0

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Ticket URL: <https://trac.macports.org/ticket/59130>
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