[MacPorts] #54135: clang-4.0 error building software on 10.6 (or less) due to #include_next <float.h>

[MacPorts]

#54135: clang-4.0 error building software on 10.6 (or less) due to #include_next
<float.h>
------------------------+-------------------------
  Reporter:  kencu      |      Owner:
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:  SnowLeopard
      Port:  clang-4.0  |
------------------------+-------------------------

Comment (by kencu):

 the comment should say
 {{{
     # only for <= SnowLeopard
 }}}

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Ticket URL: <https://trac.macports.org/ticket/54135#comment:1>
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