[MacPorts] #58895: gcc9: search path for standard libraries is incomplete/incorrect

[MacPorts]

#58895: gcc9: search path for standard libraries is incomplete/incorrect
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  Reporter:  prbuen  |      Owner:  (none)
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  gcc9    |
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Comment (by prbuen):

 I see - I wasn't sure what you were referring to with the buildbot, sorry,
 I am newish to `macports` :)

 `OpenBLAS` was compiling ok already after adding symlinks to
 `libSystem.dylib` and `libm.dylib` at `/opt/local/lib` so I wasn't too
 concerned about that - however, who knows which other package wouldn't
 install properly either. I can confirm that these symlinks are no longer
 necessary for `OpenBLAS` to install out of the box.

 Thanks for the link above. For all the ports I installed, `XCode` has only
 been a hard requirement for ports that include some Apple-looking GUI,
 such as the `AquaTerm` of `gnuplot`, `pallet`, etc, which makes sense. My
 use case of `macports` is more to install unix-like tools, so I am happy
 not to install `XCode` (disk space is cheap, but it still fills quickly on
 my middle-aged laptop).

 Thanks again for helping me through this issue.

-- 
Ticket URL: <https://trac.macports.org/ticket/58895#comment:26>
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