[MacPorts] #68947: c-ares @1.24.0 broken on <10.9: undeclared IFF_UP, IFF_LOOPBACK

[MacPorts]

#68947: c-ares @1.24.0 broken on <10.9: undeclared IFF_UP, IFF_LOOPBACK
-------------------------------------------------+-------------------------
 Reporter:  barracuda156                         |      Owner:  (none)
     Type:  defect                               |     Status:  new
 Priority:  Normal                               |  Milestone:
Component:  ports                                |    Version:  2.8.1
 Keywords:  tiger, leopard, snowleopard, lion,   |       Port:  c-ares
  mountainlion                                   |
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 https://github.com/c-ares/c-ares/issues/672

 {{{
 /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_net_c-
 ares/c-ares/work/c-ares-1.24.0/src/lib/ares__iface_ips.c: In function
 'ares__iface_ips_enumerate':
 /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_net_c-
 ares/c-ares/work/c-ares-1.24.0/src/lib/ares__iface_ips.c:460:28: error:
 'IFF_UP' undeclared (first use in this function)
   460 |     if (!(ifa->ifa_flags & IFF_UP)) {
       |                            ^~~~~~
 /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_net_c-
 ares/c-ares/work/c-ares-1.24.0/src/lib/ares__iface_ips.c:460:28: note:
 each undeclared identifier is reported only once for each function it
 appears in
 /opt/local/var/macports/build/_opt_PPCSnowLeopardPorts_net_c-
 ares/c-ares/work/c-ares-1.24.0/src/lib/ares__iface_ips.c:464:26: error:
 'IFF_LOOPBACK' undeclared (first use in this function); did you mean
 'IN_LOOPBACKNET'?
   464 |     if (ifa->ifa_flags & IFF_LOOPBACK) {
       |                          ^~~~~~~~~~~~
       |                          IN_LOOPBACKNET
 make[2]: *** [src/lib/CMakeFiles/c-ares.dir/ares__iface_ips.c.o] Error 1
 }}}

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Ticket URL: <https://trac.macports.org/ticket/68947>
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