[MacPorts] #55577: getting rid of unforeseen -I${prefix}/include option adding and its potential side-effects

[MacPorts]

#55577: getting rid of unforeseen -I${prefix}/include option adding and its
potential side-effects
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  Reporter:  RJVB         |      Owner:
      Type:  enhancement  |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:  wontfix      |   Keywords:
      Port:  pcre, glib2  |
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Comment (by RJVB):

 Where would you make the change to using -isystem in the default CPPFLAGS?

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Ticket URL: <https://trac.macports.org/ticket/55577#comment:13>
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