[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):

 Thanks for the suggestion. I tried with the `ld64_xcode` variant of
 `ld64`, but that didn't help. I also tried to uninstall, clean, and
 reinstall `gcc9` and `clang-5.0` but that also didn't make any difference:
 my library search paths remain
 {{{
 Library search paths:
         /usr/local/lib
         /opt/local/lib/gcc9/gcc/x86_64-apple-darwin18/9.2.0
         /opt/local/lib/gcc9
 Framework search paths:
 ld: library not found for -lSystem
 }}}
 I am not sure how `/usr/local/lib` got in there, in fact (I like that it's
 there, but it looks like this would be something I would have setup?).
 Where does macport get these search paths from?

-- 
Ticket URL: <https://trac.macports.org/ticket/58895#comment:15>
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