[MacPorts] #70586: ocaml-bigstringaf does not build if ocaml was built with ccache

[MacPorts]

#70586: ocaml-bigstringaf does not build if ocaml was built with ccache
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  Reporter:  barracuda156              |      Owner:  (none)
      Type:  defect                    |     Status:  new
  Priority:  Normal                    |  Milestone:
 Component:  ports                     |    Version:  2.10.1
Resolution:                            |   Keywords:
      Port:  ocaml-bigstringaf, ocaml  |
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Comment (by ryandesign):

 When you set `configureccache yes` in macports.conf, MacPorts tells ports
 to use ccache by modifying the value of `configure.cc` to be e.g. `ccache
 /usr/bin/clang` and of course passes that to the build system in the `CC`
 environment variable. A similar problem would arise using `configuredistcc
 yes`. ocaml is evidently baking the value of `CC` into itself somewhere
 and should not do that.

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Ticket URL: <https://trac.macports.org/ticket/70586#comment:5>
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