[MacPorts] #59253: libgcc9/gcc9: build fails with clang-9.0 during build of gencondmd: Undefined symbols for architecture x86_64: "ix86_binary_operator_ok(rtx_code, machine_mode, rtx_def**)"

[MacPorts]

#59253: libgcc9/gcc9: build fails with clang-9.0 during build of gencondmd:
Undefined symbols for architecture x86_64:
"ix86_binary_operator_ok(rtx_code, machine_mode, rtx_def**)"
---------------------------+--------------------
  Reporter:  kencu         |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  libgcc9 gcc9  |
---------------------------+--------------------
Description changed by kencu:

Old description:

> During the build of gcc9 with `clang-9.0`, the build fails with the
> error(s) as above.
>
> Building `gcc9` with `clang-8.0` succeeds, but there are many warnings at
> the same point in the build.
>
> Obviously will need to be reported upstream, but in the meantime,
> building `gcc9` with `clang-9.0` is **no bueno**.
>
> I don't know yet about gcc 8,7,6,5, or 4

New description:

 During the build of `gcc9` with `clang-9.0`, the build fails with the
 error(s) as above.

 Building `gcc9` with `clang-8.0` succeeds, but there are many warnings at
 the same point in the build.

 Obviously will need to be reported upstream, but in the meantime, building
 `gcc9` with `clang-9.0` is **no bueno**.

 I don't know yet about gcc 8,7,6,5, or 4

--

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Ticket URL: <https://trac.macports.org/ticket/59253#comment:2>
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