[MacPorts] #55591: openrct2 @0.1.1: error: expected parameter declarator

[MacPorts]

#55591: openrct2 @0.1.1: error: expected parameter declarator
--------------------+----------------------
 Reporter:  kencu   |      Owner:  kencu
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  openrct2
--------------------+----------------------
 At present, openrct2 builds only on 10.11 and up.

 I'm trying to sort out exactly what the issue is; it seems to be something
 in the C language standards.

 I tried changing -std=gnu11 to -std=c11 and this made a little progress,
 but the build still fails on 10.10 and older.

 Open to ideas about what kind of issue this is. I note upstream doesn't
 seem to know either, and builds on 10.11 and newer.

 <https://build.macports.org/builders/ports-10.10_x86_64-builder/builds/44585/steps
 /install-port/logs/stdio>

 <https://build.macports.org/builders/ports-10.9_x86_64-builder/builds/45111/steps
 /install-port/logs/stdio>

 <https://build.macports.org/builders/ports-10.8_x86_64_legacy-
 builder/builds/47268/steps/install-port/logs/stdio>

 <https://build.macports.org/builders/ports-10.6_x86_64_legacy-
 builder/builds/52036/steps/install-port/logs/stdio>

 <https://build.macports.org/builders/ports-10.6_i386_legacy-
 builder/builds/34425/steps/install-port/logs/stdio>

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Ticket URL: <https://trac.macports.org/ticket/55591>
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