[MacPorts] #64088: cargo-c fails to build on 10.13

[MacPorts]

#64088: cargo-c fails to build on 10.13
-----------------------+---------------------------------
  Reporter:  bK4gYuRo  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.7.1
Resolution:            |   Keywords:  cargo-c
      Port:  cargo-c   |
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Comment (by Chris Jones <jonesc@…>):

 In [changeset:"3f0613b2c68ba42a0b1d062ab434d6116b6eeef4/macports-ports"
 3f0613b2c68ba42a0b1d062ab434d6116b6eeef4/macports-ports] (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="3f0613b2c68ba42a0b1d062ab434d6116b6eeef4"
 cargo PG: Create temporary bin dir to direct clang(++) to correct compiler
 cargo/rust builds often do not properly respect MacPorts compiler
 selection,
 so use the temporary bin directory trick to ensure 'clang' and 'clang++'
 found via PATH point where we want.
 See: https://trac.macports.org/ticket/64088
 }}}

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Ticket URL: <https://trac.macports.org/ticket/64088#comment:25>
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