[MacPorts] #53480: BladeRF Building fails on OSX 10.11.6

[MacPorts]

#53480: BladeRF Building fails on OSX 10.11.6
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 Reporter:  rensd   |      Owner:
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.4.0
 Keywords:          |       Port:
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 After running

 sudo port selfupdate

 --->  Updating MacPorts base sources using rsync

 MacPorts base version 2.3.4 installed,
 MacPorts base version 2.4.0 downloaded.

 sudo port upgrade

 Build fails on BladeRF which is a dependency for install Gqrx

 Tested on 2 systems
 Remove and reinstall grqx and dependency's does not
 solve the probleme

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Ticket URL: <https://trac.macports.org/ticket/53480>
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