[MacPorts] #59194: py37-pyobjc 5.2.0: build failed

[MacPorts]

#59194: py37-pyobjc 5.2.0: build failed
------------------------+----------------------
  Reporter:  teh-maxh   |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.1
Resolution:             |   Keywords:  catalina
      Port:  py-pyobjc  |
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Comment (by ednl):

 Same problem: failed to build py37-objc on Catalina. And yes, dependency
 of matplotlib. I want to add, I have no experience with build systems but
 tried to add -DOBJC_OLD_DISPATCH_PROTOTYPES=1 to CFLAGS in setup.py but
 either it's not the correct setup.py or I edited it in the wrong place
 because that didn't work. My actual error is:
 {{{
 File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/_osx_support.py",
 line 343, in compiler_fixup
     if compiler_so[index] == '-isysroot':
 IndexError: list index out of range
 }}}
 which I hadn't seen mentioned.

-- 
Ticket URL: <https://trac.macports.org/ticket/59194#comment:13>
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