[MacPorts] #61384: sbcl build failure 10.11

[MacPorts]

#61384: sbcl build failure 10.11
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  Reporter:  dyne2meter  |      Owner:  easye
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.3
Resolution:              |   Keywords:
      Port:  sbcl        |
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Comment (by dyne2meter):

 Okay, I tried (naively) simply adding a line for the legacy-support
 PortGroup to the portfile, but the build fails with the same error on
 10.11 platform. I'm not bitching about this because I really care about
 sbcl. Maxima has a dependency on sbcl. I don't want to try to convince
 maxima's port maintainer to switch the LISP system to ecl, which builds on
 my system without issues. I don't really know where to go from here, so
 somebody with more knowledge of the ports build system is going to have to
 step in. Why do I mention ecl? SageMath uses ecl to support maxima in
 their system and my build of SageMath from its makefile goes off without a
 hitch, even with the most current version.

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Ticket URL: <https://trac.macports.org/ticket/61384#comment:10>
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