[MacPorts] #64353: opencv3 has undocumented dependencies

[MacPorts]

#64353: opencv3 has undocumented dependencies
-------------------------+----------------------
  Reporter:  mouse07410  |      Owner:  mascguy
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  opencv3     |
-------------------------+----------------------

Comment (by mouse07410):

 > My apologies for mentioning {{{default_compilers}}} to you.

 No apology necessary - and it did seem like a good idea (actually, still
 does).

 > If the tcl is not readable for you, you will be too frustrated to
 attempt to use it.

 Hopefully, one does not need to be a Tcl expert to correctly modify
 configuration file?

 I would like to get to the bottom of how the list provided by
 {{{default_compilers}}} affects the compiler selection, ''especially''
 when this list has more than one entry. I guess it is not documented, but
 somebody probably knows...?

 > I think you best forget about {{{default_compilers}}} then, and instead
 modify {{{clang_compilers.tcl}}}

 I'm trying to avoid actually modifying the "guts" of the Macports distro,
 limiting myself to adjusting the configuration. Though I admit that
 modifying  {{{clang_compilers.tcl}}} would be the simplest (short of
 actually figuring out {{{default_compilers}}} behavior).

-- 
Ticket URL: <https://trac.macports.org/ticket/64353#comment:40>
MacPorts <https://www.macports.org/>
Ports system for macOS