[MacPorts] #62816: Buildbot: building XCode project on 10.14.4 fails with: Swift does not support the SDK 'MacOSX10.14.sdk'

[MacPorts]

#62816: Buildbot: building XCode project on 10.14.4 fails with: Swift does not
support the SDK 'MacOSX10.14.sdk'
----------------------------+---------------------
  Reporter:  lhaeger        |      Owner:  admin@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  buildbot/mpbb  |    Version:  2.6.4
Resolution:                 |   Keywords:
      Port:  AutoRaise      |
----------------------------+---------------------

Comment (by kencu):

 Replying to [comment:2 lhaeger]:
 > Replying to [comment:1 kencu]:
 > > MacPorts specifically forces the SDK that matches the system version
 by default.
 >
 > Seems as if that is too simple a default rule, maybe. Defaulting to the
 SDK that gets installed with the XCode Version used might be a better
 choice. Or would that break other ports...?

 feel free to raise that on the dev list if you choose

 >
 >
 > > It can be changed with {{{configure.sdkroot}}}.
 >  That’s good news, thanks a lot, I‘ll give that a try. I did not find
 the parameter format documented , though, is it just a version string like
 „10.15“?

 here's an example

 https://github.com/macports/macports-
 ports/blob/1f76293ecbd0cbf368ee373d878138a6712da718/devel/libsdl2/Portfile#L35

 there is also another variable that could be manipulated, which might be
 simpler:
 {{{
 macosx_sdk_version           10.15
 }}}

 I'm not sure if that one also exists as
 {{{configure.macosx_sdk_version}}}, you'd have to check or wait for
 someone to chime in about it.

-- 
Ticket URL: <https://trac.macports.org/ticket/62816#comment:3>
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