[MacPorts] #63553: dvisvgm @2.12_0: fail to build on macOS 10.11.6

[MacPorts]

#63553: dvisvgm @2.12_0: fail to build on macOS 10.11.6
----------------------+---------------------
 Reporter:  nortcele  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.7.1
 Keywords:            |       Port:  dvisvgm
----------------------+---------------------
 dvisvgm @2.12_0: fail to build on macOS 10.11.6

 In the log file there are many alerts but the error seem to be:

 {{{
 :info:build PSPattern.cpp:111:9: error: no viable conversion from returned
 value of type 'unique_ptr<SVGElement, default_delete<SVGElement>>' to
 function return type 'unique_ptr<XMLElement, default_delete<XMLElement>>'
 }}}

 Configuration
 macOS 10.11.6 15G22010
 Xcode 8.2.1 8C1002
 MacPorts 2.7.1

-- 
Ticket URL: <https://trac.macports.org/ticket/63553>
MacPorts <https://www.macports.org/>
Ports system for macOS