[MacPorts] #69379: storing port configuration settings under the workdir

[MacPorts]

#69379: storing port configuration settings under the workdir
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  Reporter:  RJVB         |      Owner:  (none)
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  base         |    Version:
Resolution:               |   Keywords:
      Port:               |
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Comment (by RJVB):

 Replying to [ticket:69379 RJVB]:
 > the past few weeks I've encountered at least 1 port that seems to have
 portfile code that is conditional on the selected compiler version.

 In fact, any port that selects a compiler version even if only through the
 blacklisting feature would benefit from the suggested mechanism, esp. with
 build systems that can invoke a re-configuration when (re)starting a build
 if they detect a change to one of the build definition files.

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Ticket URL: <https://trac.macports.org/ticket/69379#comment:1>
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