[MacPorts] #37601: libc-headers installs stdio.h masking OS libc header

[MacPorts]

#37601: libc-headers installs stdio.h masking OS libc header
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  Reporter:  ciserlohn@…   |      Owner:  mfeiri@…
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.1.2
Resolution:                |   Keywords:
      Port:  libc-headers  |
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Comment (by jeremyhu@…):

 sys/cdefs.h is not part of Libc.  It is part of xnu (xnu/bsd/sys/cdefs.h)
 ...

 That being said, I removed __DARWIN_LDBL_COMPAT from sys/cdefs.h a while
 back since it wasn't actually needed any more.  It only had an effect on
 ppc64, so I removed its usage in Libc and then removed the macro from xnu.

 It seems that the problem is you're somehow using an older Libc (uses the
 macro) with a newer cdefs.h (macro removed).

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Ticket URL: <https://trac.macports.org/ticket/37601#comment:12>
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