[MacPorts] #66283: compilers portgroup uses -rpath on Tiger

[MacPorts]

#66283: compilers portgroup uses -rpath on Tiger
------------------------+-----------------------
  Reporter:  ballapete  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.8.0
Resolution:             |   Keywords:  tiger ppc
      Port:  boost176   |
------------------------+-----------------------

Comment (by ballapete):

 Since I succeeded to build `icu` a few more ports needed to be rebuilt,
 and `boost176` is one of them. Again it failed to build because of
 `-Wl,-rpath,/opt/local/lib/libgcc` introduced by `port selfupdate` into
 `/opt/local/var/macports/sources/nue.de.rsync.macports.org/macports/release/tarballs/ports/_resources/port1.0/group/compilers-1.0.tcl`.
 Removing that faulty line `boost176` has again a clean build environment.
 Noting more changed. Which additional proof is needed to show that the new
 `/opt/local/var/macports/sources/nue.de.rsync.macports.org/macports/release/tarballs/ports/_resources/port1.0/group/compilers-1.0.tcl`
 is faulty in `Tiger`?

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Ticket URL: <https://trac.macports.org/ticket/66283#comment:6>
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