[MacPorts] #61511: wireshark3 @3.4.0_0+cares+chmodbpf+geoip+gnutls+kerberos5+libsmi+python37+qt5+zlib: error: use of undeclared identifier 'CLOCK_REALTIME'

[MacPorts]

#61511: wireshark3
@3.4.0_0+cares+chmodbpf+geoip+gnutls+kerberos5+libsmi+python37+qt5+zlib:
error: use of undeclared identifier 'CLOCK_REALTIME'
-------------------------+----------------------------------
  Reporter:  thetrial    |      Owner:  ghosthound
      Type:  defect      |     Status:  accepted
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.4
Resolution:              |   Keywords:  legacy-os, elcapitan
      Port:  wireshark3  |
-------------------------+----------------------------------

Comment (by ghosthound):

 For "old" version of macOS I was thinking of the mention of 10.8 above.
 El Capitan (10.11) last release that I know of was 10.11.6 in July 2016,
 which puts it at ~4.5 years.  That's getting up there as well.

 For the ${os.major} check proposed - are we doing this in any other ports?
 If so, are we getting any reports of confusion as to why an older version
 is installed for an older OS version?

-- 
Ticket URL: <https://trac.macports.org/ticket/61511#comment:31>
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