[MacPorts] #42123: Cannot install Atlas

[MacPorts]

#42123: Cannot install Atlas
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  Reporter:  anat.stolarsky@…  |      Owner:  macports-tickets@…
      Type:  defect            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.2.1
Resolution:                    |   Keywords:
      Port:                    |
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Comment (by vince@…):

 Please clean and try building with the +clang option instead.
 The error you get points to some configuration woes. The compiler does not
 find the standard <stdio.h>, which implies something is amiss with the
 environment.

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Ticket URL: <https://trac.macports.org/ticket/42123#comment:1>
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