[MacPorts] #56661: Maude 2.6: fails to build

[MacPorts]

#56661: Maude 2.6: fails to build
----------------------+--------------------
 Reporter:  siccegge  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.5.1
 Keywords:            |       Port:  maude
----------------------+--------------------
 build failure:

 {{{
 :info:build In file included from stringOpSymbol.cc:58:
 :info:build In file included from ./stringDagNode.hh:28:
 :info:build ../../src/Utility/ropeStuff.hh:37:14: fatal error: 'ext/rope'
 file not found
 :info:build     #include <ext/rope>
 :info:build              ^~~~~~~~~~
 :info:build 2 warnings and 1 error generated.
 }}}

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Ticket URL: <https://trac.macports.org/ticket/56661>
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