[MacPorts] #53173: py-pyobjc: fails to build on 10.6, uses 10.7 SDK; stdarg.h: No such file or directory

[MacPorts]

#53173: py-pyobjc: fails to build on 10.6, uses 10.7 SDK; stdarg.h: No such file or
directory
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  Reporter:  mojca      |      Owner:
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:  snowleopard
      Port:  py-pyobjc  |
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Comment (by mojca):

 Ah, that explains why I constantly get `10.(n+1)` on my computer as well.
 {{{
 /usr/bin/xcodebuild -version -sdk macosx Path
 }}}
 returns the newer SDK for me as well.

 I was looking at some links like
 http://stackoverflow.com/a/10330744/585897 which tend to suggest a broken
 installation of the toolchain.

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Ticket URL: <https://trac.macports.org/ticket/53173#comment:2>
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