[MacPorts] #62474: tensorflow build fails on 10.15

[MacPorts]

#62474: tensorflow build fails on 10.15
----------------------------+----------------------
  Reporter:  essandess      |      Owner:  mascguy
      Type:  defect         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.6.4
Resolution:                 |   Keywords:
      Port:  py-tensorflow  |
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Comment (by mascguy):

 Replying to [comment:27 mascguy]:
 > Currently looking at options to fix the build for 10.14 and 10.15, which
 presently fails with "argument list too long." There's at least one
 proposed patch for Bazel, which might finally resolve these issues. Stay
 tuned!

 In case anyone's interested in the details, the upstream discussion is
 here:

 *
 [https://github.com/bazelbuild/bazel/issues/14530#issuecomment-1167132417
 14530 - error: argument list too long]

 The author of the patches implemented incremental linking, to avoid a
 single massive final link command.

 The proposed changes - albeit a year old, so they may need some
 modifications - are here:

 * [https://github.com/llv22/bazel-
 macOS-10.13.6/blob/baad0cae14ec6679ee6c77bb4c06d8b8f709c8f6/src/main/java/com/google/devtools/build/lib/rules/cpp/CppLinkAction.java
 Bazel Incremental Linking - Core Code]
 * [https://github.com/llv22/bazel-
 macOS-10.13.6/blob/baad0cae14ec6679ee6c77bb4c06d8b8f709c8f6/src/test/java/com/google/devtools/build/lib/rules/cpp/CppLinkActionTest.java
 Bazel Incremental Linking - Test Code]

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Ticket URL: <https://trac.macports.org/ticket/62474#comment:28>
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