[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 kencu):

 Replying to [comment:26 mouse07410]:

 > Or do you mean plain {{{clang}}} entry to mean the the Xcode clang
 (whatever version the current installed Xcode happens to be)?

 yes


 \\


 > Also: right now (the default/installed Macports config), {{{port}}} uses
 Xcode clang for everything ''except'' what requires capabilities like
 {{{+openmp}}} that need {{{macports-clang-xx}}}. If I add
 {{{default_compilers . . .}}} line - would it force {{{port}}} to build
 with the first entry-clang of that line, rather than reverting to
 {{{macports-clang}}} only when Xcode clang can't do it?

 whatever you want. macports-clang-13 to build everything by default: put
 it first. xcode clang to build everything by default: put it first. You da
 boss. MacPorts will bend to your will, and do your bidding.

 \\

 > > a (nearly) full list of the compiler options is here:
 ​https://trac.macports.org/wiki/UsingTheRightCompiler
 >
 > Yeah, I checked that URL - it doesn't even have {{{macports-
 clang-13}}}...

 I noticed that too -- feel free to add it! MacPorts can always use some
 help, if you know what you're doing.

 \\


 > Though, if, e.g., something fails to build with {{{macports-clang-13}}}
 - wouldn't you want to know...?

 Use your discretion.

-- 
Ticket URL: <https://trac.macports.org/ticket/64353#comment:27>
MacPorts <https://www.macports.org/>
Ports system for macOS