[MacPorts] #34221: sw_vers hangs during a build

[MacPorts]

#34221: sw_vers hangs during a build
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  Reporter:  richard.t.lloyd@…  |      Owner:  jeremyhu@…
      Type:  defect             |     Status:  assigned
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:  2.0.4
Resolution:                     |   Keywords:  mountainlion
      Port:  gettext            |
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Comment (by kevin@…):

 Ok this is because the shell in the user profile for root is bin/sh and
 that gets run when you are logged in as root.  /bin/sh does not work
 correctly with the -c arg so it hangs.

 running with sudo bypasses this because you are running with bash which is
 the default user shell.

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Ticket URL: <https://trac.macports.org/ticket/34221#comment:49>
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