[MacPorts] #63597: graphviz-gui @2.49.1_0.darwin_15.x86_64: unknown type name 'NSToolbarItemIdentifier'

[MacPorts]

#63597: graphviz-gui @2.49.1_0.darwin_15.x86_64: unknown type name
'NSToolbarItemIdentifier'
---------------------------+-----------------------------------------------
  Reporter:  thetrial      |      Owner:  mascguy
      Type:  defect        |     Status:  closed
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.1
Resolution:  fixed         |   Keywords:  elcapitan legacy-os patch-pending
      Port:  graphviz-gui  |
---------------------------+-----------------------------------------------

Comment (by sambthompson):

 Replying to [comment:25 ryandesign]:
 > Most of our buildbot machines use the last Xcode version that contains
 the SDK version that matches the OS version. That way, there is no
 confusion: symbols found at build time are available at runtime. On the
 10.10 and 10.11 build machines for whatever reason I had decided at some
 point to update them to newer versions of Xcode that only have the next
 SDK. (The 10.10 machine's Xcode only has the 10.11 SDK; the 10.11
 machine's Xcode only has the 10.12 SDK.) Probably I did this because some
 port would not build otherwise. But most ports for software that is not
 written specifically for macOS are not aware of how macOS SDKs work and
 they assume that symbols they find at build time are always available at
 runtime, which is not the case when you are building with a newer SDK. I
 don't know if that is exactly what's going on here, but it's one of the
 reasons this type of problem can occur.
 Thanks for this explanation. There certainly have been issues over the
 years with SDK versions mismatch around a number of ports (it's the most
 common cause of trac tickets I've raised, certainly), but these problems
 always seem to show up during build, not at runtime (as far as I know). I
 would have expected more issues on the buildbot machines with building
 where only the later SDK is available. Apple don't seem as concerned about
 maintaining backwards compatibility as say, Microsoft is.
 >
 > Was this problem ever reported to the Graphviz developers? I did not see
 any issue filed there containing the string `NSToolbarItemIdentifier`. We
 don't want to carry patches around forever; the Graphviz repository is the
 correct place for a fix for this issue to be made, not in MacPorts.
 Not reported by me. Per the questions raised above, I was not confident I
 understood the issue well enough to make an appropriate report upstream.
 Can see the preference is to get issues addressed upstream where possible
 rather than patch around them, though. I assumed the patch author would be
 best placed to identify upstream issues (i.e. to know whether the root
 cause was upstream or macports environment specific).
 >
 > For now, though, graphviz-gui @9.0.0 worked fine for me on Mac OS X
 10.7.5.
 Just successfully built/installed same version here on 10.11.6.

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Ticket URL: <https://trac.macports.org/ticket/63597#comment:26>
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