[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
--------------------------+-----------------
  Reporter:  RJVB         |      Owner:
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  pcre, glib2  |
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Comment (by RJVB):

 In fact, how does the resolution of build dependencies work?
 - If the (pkgconfig) install is triggered from within the evaluation of
 the dependent port (say before the pre-configure step) the CFLAGS
 definition will indeed not be altered after the install
 - If the install is somehow done before the dependent port is parsed (or
 if the Portfile is parsed again after that install) the check above should
 pass

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Ticket URL: <https://trac.macports.org/ticket/55577#comment:9>
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