[MacPorts] #39567: pslib stealth dependence on libraries from /usr/local/lib (affects gnudatalanguage)

[MacPorts]

#39567: pslib stealth dependence on libraries from /usr/local/lib (affects
gnudatalanguage)
--------------------------+--------------------------------
  Reporter:  gnwiii@…     |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.1.3
Resolution:               |   Keywords:
      Port:  pslib        |
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Comment (by cal@…):

 The very same issue will also show up with lots and lots of other ports.
 We usually do not specifically deal with stuff in `/usr/local/lib` but
 advise users to move it aside. See wiki:FAQ#usrlocal.

 Since you have already done the hard part and figured out what to change
 to produce a working build with files present in `/usr/local`, we might
 aswell apply the fix. Just a note for future releases: Starting with
 MacPorts 2.2 this problem can be avoided by using "trace mode" (by
 providing the `-t` switch to `port`), which enables a library preloading-
 based sandbox that will hide files in `/usr/local` from the build system.

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Ticket URL: <https://trac.macports.org/ticket/39567#comment:1>
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