[MacPorts] #32528: opencv @2.3.1a fixes and improvements: eigen, ffmpeg, docs, opengl, python, shared+static, tbb

[MacPorts]

#32528: opencv @2.3.1a fixes and improvements: eigen, ffmpeg, docs, opengl, python,
shared+static, tbb
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 Reporter:  marin.saric@…          |       Owner:  macports-tickets@…                   
     Type:  enhancement            |      Status:  new                                  
 Priority:  Normal                 |   Milestone:                                       
Component:  ports                  |     Version:  2.0.3                                
 Keywords:  haspatch               |        Port:  opencv                               
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 I probably left something out, but here's a list of fixes I can come up
 with right now:

 Fixes:
  - Fix FFmpeg dependencies: (a hidden dependency on orc)
  - Fix FFmpeg dependencies: rely on ffmpeg port to find the dependent
 ports
  - Fix the search for Thread Building Blocks: rely on proper CMake prefix
 instead of hardcoding the TBB path
  - Python: Python is run during CMake, make sure the correct version of
 Python is run
  - Python: Interfaces never built if the right version of numpy was not
 present. Fixed.
  - Remove hardcoding the MacPorts Python path through reinplace, use the
 already available cache variables instead
  - The C/C++ sample code was built: sample code executable only install on
 Win32
  - The C/C++ sample code never made it into destroot
  - Fix uppercase/lowercase differences in path componets (breaks on non-
 HFS volumes): ${prefix}/opencv and ${prefix}/OpenCV both used for path.
 Use OpenCV (per CMake guidelines)
  - Find the right version of Sphinx based on the version of python
 installed (build-sphinx-python.ver)
  - The Python code never made it into destroot
  - The build_all.sh script to run/compile example code did not recognize
 cpp files if listed as a paramter
  - The build_all.sh script worked incorrectly if a directory contained
 zero c files or zero cpp files
  - The build_all.sh script wasn't present in the cpp directory
  - The sample code permissions were wronged (read-only for user,
 build_all.sh not executable)
  - The documentation was never installed
  - Remove hardcoding linker flags such as "-lbz2", etc. Rely on CMake to
 do the right thing
  - Remove JPEG2000 during static build (due to a collision with OpenJPEG
 used by FFmpeg)

 Enhancements:
  - Link against Eigen2/Eigen3
  - Build both the dynamic and static versions of OpenCV
  - Allow the user to strip down OpenCV by removing dependencies on ffmpeg,
 tbb, eigen, etc. etc. through more variants
  - Enable OpenGL extensions if QT4 is on.

 Tested with and without QT4, with and without full docs, with and without
 tbb in static and dynamic builds, c, c++ and python sample code run,
 tested building full docs.

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Ticket URL: <https://trac.macports.org/ticket/32528>
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