[MacPorts] #43885: +arm_runtime is sometimes selected even though SDK support is not available (was: clang-3.0 @ 3.0_13 : build failure - /usr/include/machine/limits.h:8:10: fatal error: 'arm/limits.h' file not found #include <arm/limits.h>)

[MacPorts]

#43885: +arm_runtime is sometimes selected even though SDK support is not available
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  Reporter:  ciserlohn@…  |      Owner:  jeremyhu@…
      Type:  defect       |     Status:  reopened
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.3.0
Resolution:               |   Keywords:
      Port:  clang-3.0    |
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Comment (by jeremyhu@…):

 Well, we don't have a way to verify the version of the installed command
 line tools SDK, so the xcode version is the best proxy we have.
 Suggestions are welcome, but a proper fix will likely need to come from
 base.

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Ticket URL: <https://trac.macports.org/ticket/43885#comment:3>
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