[MacPorts] #53231: QGIS @2_18_2_2: error: virtual function 'dataType' has a different return type ('int') than the function it overrides (which has return type 'QGis::DataType')

[MacPorts]

#53231: QGIS @2_18_2_2: error: virtual function 'dataType' has a different return
type ('int') than the function it overrides (which has return type
'QGis::DataType')
-----------------------+----------------------
  Reporter:  gcarlino  |      Owner:  Veence
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.5
Resolution:            |   Keywords:
      Port:  QGIS      |
-----------------------+----------------------

Comment (by fgassert):

 With the patches supplied here by Fabrice and Michael, I am able to get
 the build farther, but am still hitting an error with sip on Sierra
 10.12.3.

 {{{
 :info:build
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_gis_qgis/QGIS/work
 /QGIS-2_18_2/build/python/gui/sip_guipart3.cpp:5968:7:
 error: deleted function '~sipQgsFileDownloader' cannot override a non-
 deleted function
 :info:build
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_gis_qgis/QGIS/work
 /QGIS-2_18_2/build/python/gui/sip_guipart3.cpp:5968:30:
 error: base class '::QgsFileDownloader' has private destructor
 }}}

--
Ticket URL: <https://trac.macports.org/ticket/53231#comment:41>
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