[MacPorts] #63645: building libqalculate @3.21.0 makes clang-10 @10.0.1_5 hit an assertion failure

[MacPorts]

#63645: building libqalculate @3.21.0 makes clang-10 @10.0.1_5 hit an assertion
failure
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  Reporter:  cooljeanius                      |      Owner:  (none)
      Type:  defect                           |     Status:  new
  Priority:  Normal                           |  Milestone:
 Component:  ports                            |    Version:  2.7.1
Resolution:                                   |   Keywords:
      Port:  libqalculate, clang-10, llvm-10  |
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Changes (by cooljeanius):

 * Attachment "gcc_configure_flags.diff" added.

 diff between the configure flags I use for GCC and the configure flags
 that MacPorts uses for it

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Ticket URL: <https://trac.macports.org/ticket/63645>
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