[MacPorts] #67164: gcc12 @12.2.0_2: gcc is baking in a fragile specific sdk because regex test is not mstching SDKs without a decimal point

[MacPorts]

#67164: gcc12 @12.2.0_2: gcc is baking in a fragile specific sdk because regex test
is not mstching SDKs without a decimal point
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  Reporter:  jsalort  |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.8.1
Resolution:           |   Keywords:
      Port:  gcc12    |
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Comment (by cjones051073):

 Actually....

 I am not sur the above proc is actually broken. The intention was to
 replace `MacOSN.x.sdk` with `MacOSN.sdk` on the assumption the later would
 always be available for a given major OS release. So I think I would like
 to understand a bit  better why thesis not the case ?

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Ticket URL: <https://trac.macports.org/ticket/67164#comment:14>
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