[MacPorts] #59273: librsvg fails to build on mac os x 10.15 (catalina)

[MacPorts]

#59273: librsvg fails to build on mac os x 10.15 (catalina)
----------------------+--------------------
  Reporter:  tiperiu  |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.6.1
Resolution:           |   Keywords:
      Port:  librsvg  |
----------------------+--------------------
Changes (by tiperiu):

 * Attachment "main.log" added.

 log file

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Ticket URL: <https://trac.macports.org/ticket/59273>
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