[MacPorts] #58764: libgcc-devel @10-20190714 does not build

[MacPorts]

#58764: libgcc-devel @10-20190714  does not build
------------------------+----------------------------
 Reporter:  jerrylotto  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:  MacPorts 2.6.0
Component:  ports       |    Version:  2.5.4
 Keywords:              |       Port:  libgcc-devel
------------------------+----------------------------
 libgcc-devel @10-20190616_0 (active) worked fine but the latest libgcc-
 devel won't build.  Fails comparing stages 2 and 3 with 94 object
 differences and :info:build make[2]: *** [compare] Error 1.  Xcode Version
 10.1 (10B61) is installed and working with command line tools on macOS
 High Sierra 10.13.6 (17G7024) (hardware not Mojave compatible).

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Ticket URL: <https://trac.macports.org/ticket/58764>
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