[MacPorts] #63771: sdrangel: builds fail for macOS 10.11 and earlier; fix, or set known_fail

[MacPorts]

#63771: sdrangel: builds fail for macOS 10.11 and earlier; fix, or set known_fail
-----------------------+----------------------
  Reporter:  mascguy   |      Owner:  ra1nb0w
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.7.1
Resolution:            |   Keywords:
      Port:  sdrangel  |
-----------------------+----------------------

Comment (by ra1nb0w):

 The error is
 {{{
 /opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_science_SDRangel/SDRangel/work/sdrangel-6.17.2/plugins/channelrx/radioastronomy/radioastronomy.cpp:363:47:
 error: no member named 'callOnTimeout' in 'QTimer'
         m_sweepTimerConnection = m_sweepTimer.callOnTimeout(this, f);
 }}}
 probably because the Qt version used by <10.12 doesn't support
 {{{callOnTimeout()}}} (introduced by Qt 5.12).

 I disable SDRangel for macOS < 10.12

-- 
Ticket URL: <https://trac.macports.org/ticket/63771#comment:1>
MacPorts <https://www.macports.org/>
Ports system for macOS