[MacPorts] #60091: i686-w64-mingw32-gcc-nothreads build failure - Segmentation fault

[MacPorts]

#60091: i686-w64-mingw32-gcc-nothreads build failure - Segmentation fault
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  Reporter:  mmaenz                |      Owner:  mojca
      Type:  defect                |     Status:  assigned
  Priority:  Normal                |  Milestone:
 Component:  ports                 |    Version:  2.6.2
Resolution:                        |   Keywords:  catalina
      Port:  i686-w64-mingw32-gcc  |
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Comment (by Gcenx):

 I can confirm xcode11 failed to built this on macOS Catalina regardless of
 deployment target or even overriding the SDK to 10.13 will still result in
 a failed compile.

 I did a few changes to the Portfile that might not have been needed (I’ll
 edit the comment or comment again after work), I did blacklist XCode11 now
 building from source using macports clang-9 I got a completed build.
 The same blacklisting of XCode11 was applied to the X86_64 package and for
 good measure also onto the mingw-w64 meta package (not sure if it’s
 required or not)

 I pre-installed clang-9.0 since it failed to installed due to a missing
 package when called via mingw-w64

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Ticket URL: <https://trac.macports.org/ticket/60091#comment:10>
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