[MacPorts] #55981: enable ccache integration

[MacPorts]

#55981: enable ccache integration
--------------------------+--------------------
  Reporter:  seanchannel  |      Owner:
      Type:  enhancement  |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  base         |    Version:
Resolution:  invalid      |   Keywords:
      Port:               |
--------------------------+--------------------
Changes (by ryandesign):

 * status:  new => closed
 * resolution:   => invalid
 * component:  ports => base


Comment:

 MacPorts already supports using ccache to build ports. Install the ccache
 port, then set `configureccache yes` in
 /opt/local/etc/macports/macports.conf.

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Ticket URL: <https://trac.macports.org/ticket/55981#comment:1>
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