[MacPorts] #64353: opencv3 has undocumented dependencies

[MacPorts]

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

 Thank you!

 But something still doesn't appear right:
 {{{
 $ sw_vers
 ProductName:    macOS
 ProductVersion: 11.6.2
 BuildVersion:   20G314
 $ port deps opencv3 +openmp
 Full Name: opencv3 @3.4.16_1+openmp
 Build Dependencies:   cmake, pkgconfig, clang-12
 Library Dependencies: ffmpeg, zlib, bzip2, libpng, libjpeg-turbo,
 openjpeg, tiff, webp, ilmbase, openexr,
                       libomp
 $ port installed | grep clang
   clang-11 @11.1.0_3+analyzer+libstdcxx (active)
   clang-13 @13.0.0_0+analyzer+libstdcxx (active)
   clang_select @2.2_0 (active)
   fftw-3 @3.3.10_0+clang11+gfortran+openmp (active)
 $
 }}}

 Why, when clang-11 and clang-13 are installed, it chooses  clang-12 that
 is ''not'' installed???

-- 
Ticket URL: <https://trac.macports.org/ticket/64353#comment:18>
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