[MacPorts] #61314: unbound @1.12.0: error: use of undeclared identifier 'IF_NAMESIZE'

[MacPorts]

#61314: unbound @1.12.0: error: use of undeclared identifier 'IF_NAMESIZE'
---------------------------+----------------------
  Reporter:  chrstphrchvz  |      Owner:  nerdling
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.6.3
Resolution:                |   Keywords:
      Port:  unbound       |
---------------------------+----------------------

Comment (by jmroot):

 Even on current systems, the man page for if_indextoname specifies
 multiple includes in the synopsis:
 {{{
      #include <sys/types.h>
      #include <sys/socket.h>
      #include <net/if.h>
 }}}
 Should probably split `net/if.h` into its own AC_CHECK_HEADERS with an
 additional `sys/socket.h` conditional include on top of the ones in
 AC_INCLUDES_DEFAULT.

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Ticket URL: <https://trac.macports.org/ticket/61314#comment:1>
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