[MacPorts] #36299: base should add a dependency on a compiler if it is being used

[MacPorts]

#36299: base should add a dependency on a compiler if it is being used
-------------------------+-------------------
 Reporter:  jeremyhu@…   |      Owner:  jmr@…
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  base         |    Version:  2.1.2
 Keywords:               |       Port:
-------------------------+-------------------
 If configure.compiler is a port, base should automatically add a
 dependency on that port.  This would avoid the need to add blocks like
 this (from wine):

 {{{
 # TODO: This should be done by base
 if {${configure.compiler} == "apple-gcc-4.2"} {
     depends_build-append port:apple-gcc42
     depends_skip_archcheck-append apple-gcc42
 }
 }}}

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Ticket URL: <https://trac.macports.org/ticket/36299>
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