[MacPorts] #70148: shairport-sync broken by a recent update

[MacPorts]

#70148: shairport-sync broken by a recent update
-------------------------+-------------------------------------------------
  Reporter:              |      Owner:  ale275
  barracuda156           |
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.9.3
Resolution:              |   Keywords:  mountainlion, lion, snowleopard,
      Port:  shairport-  |  leopard, tiger
  sync                   |
-------------------------+-------------------------------------------------

Comment (by barracuda156):

 Replying to [comment:1 ryandesign]:

 Yes, you are right, they have broken again what was fixed earlier, but
 then the build fails on:
 {{{
 rtsp.c: In function ‘rtsp_listen_loop’:
 rtsp.c:5672: error: ‘TCP_KEEPCNT’ undeclared (first use in this function)
 rtsp.c:5672: error: (Each undeclared identifier is reported only once
 rtsp.c:5672: error: for each function it appears in.)
 rtsp.c:5676: error: ‘TCP_KEEPINTVL’ undeclared (first use in this
 function)
 make[1]: *** [rtsp.o] Error 1
 }}}

 We had tickets mentioning these, but nothing useful: #69634 #69634

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Ticket URL: <https://trac.macports.org/ticket/70148#comment:2>
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