[GHC] #16153: ghc 8.6.3 fails to build on macOS Sierra, High Sierra and Mojave (10.12 to 10.14)

[GHC]

#16153: ghc 8.6.3 fails to build on macOS Sierra, High Sierra and Mojave (10.12 to
10.14)
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        Reporter:  fxcoudert         |                Owner:  (none)
            Type:  bug               |               Status:  infoneeded
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.3
      Resolution:                    |             Keywords:
Operating System:  MacOS X           |         Architecture:  x86_64
 Type of failure:  GHC doesn't work  |  (amd64)
  at all                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 > Without parallel build, the testsuite still fails:

 Indeed `ghci063` is a known issue. See #16201.

 As far as the others are concerned: `T12752` is odd but smells of a broken
 toolchain (CPP is expected to throw an error on this test due to `-Wcpp-
 undef`). The rest are performance tests which indeed may vary from machine
 to machine (see #12758 which improves this situation in `master`).

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16153#comment:6>
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