[MacPorts] #44571: gmp @6.0.0: configure fails

[MacPorts]

#44571: gmp @6.0.0: configure fails
-------------------------------+------------------------
  Reporter:  erik.mccaffrey@…  |      Owner:  mcalhoun@…
      Type:  defect            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.3.1
Resolution:                    |   Keywords:
      Port:  gmp               |
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Comment (by cal@…):

 Your problem likely is
 {{{
 conftest.c:6:38: error: /usr/local/include/string.h: Permission denied
 }}}

 You cannot safely have files in `/usr/local` while using MacPorts,
 especially none shadowing system headers like `string.h`. Please move this
 file out of the way or outright delete it. You can also use trace mode
 `sudo port -t install --unrequested gmp` for this installation, which will
 have a performance overhead, but avoid problems like these.

-- 
Ticket URL: <https://trac.macports.org/ticket/44571#comment:5>
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