[MacPorts] #70383: opencv3: build against native SDKs, do not force 10.7 SDK which breaks powerpc builds

[MacPorts]

#70383: opencv3: build against native SDKs, do not force 10.7 SDK which breaks
powerpc builds
-----------------------------------------+---------------------
 Reporter:  barracuda156                 |      Owner:  (none)
     Type:  defect                       |     Status:  new
 Priority:  Normal                       |  Milestone:
Component:  ports                        |    Version:  2.9.3
 Keywords:  tiger, leopard, snowleopard  |       Port:  opencv3
-----------------------------------------+---------------------
 The port unnecessarily forces 10.7 SDK on 10.6 and earlier, which
 obviously cannot work for PowerPC and apparently unjustified for x86. At
 least for the default variant: the port has numerous variants, so it is
 possible that some of those in fact require 10.7+ SDK, but then the
 requirement should be placed accordingly.

 This is the only fix needed on 10.6 (it was needed for much earlier
 versions already, hence the date):
 {{{
 --- modules/videoio/CMakeLists.txt      2015-12-18 23:02:16.000000000
 +0800
 +++ modules/videoio/CMakeLists.txt      2024-07-15 04:48:46.000000000
 +0800
 @@ -144,9 +144,6 @@
    if(UNIX AND BZIP2_LIBRARIES)
      list(APPEND VIDEOIO_LIBRARIES ${BZIP2_LIBRARIES})
    endif()
 -  if(APPLE)
 -    list(APPEND VIDEOIO_LIBRARIES "-framework VideoDecodeAcceleration"
 bz2)
 -  endif()
  endif(HAVE_FFMPEG)

  if(HAVE_PVAPI)
 }}}

 (On 10.6 ppc I had to build against `libdispatch-legacy`, which is not
 needed on x86, and likely not needed on 10.5, though I cannot test that at
 the moment.)

-- 
Ticket URL: <https://trac.macports.org/ticket/70383>
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