[MacPorts] #71304: xalanc: build failure with xercesc3 at 3.3.0

[MacPorts]

#71304: xalanc: build failure with xercesc3 at 3.3.0
------------------------+--------------------
  Reporter:  matty0ung  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  xalanc     |
------------------------+--------------------

Comment (by matty0ung):

 I don't have direct access to the main.log file.  I don't own a Mac and am
 doing everything remotely via GitHub Actions.  (It's for the automated
 builds of https://github.com/Brewtarget/brewtarget, which runs on Windows,
 Mac and Linux, courtesy of Qt.)  But I'll see what extra diagnostics I can
 get.

-- 
Ticket URL: <https://trac.macports.org/ticket/71304#comment:3>
MacPorts <https://www.macports.org/>
Ports system for macOS