[MacPorts] #21014: OpenCV 1.0.0 does not build on snow leopard

[MacPorts]

#21014: OpenCV 1.0.0 does not build on snow leopard
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 Reporter:  grundmann.matthias@…          |       Owner:  stante@…        
     Type:  defect                        |      Status:  new             
 Priority:  Normal                        |   Milestone:                  
Component:  ports                         |     Version:  1.8.0           
 Keywords:  LP64                          |        Port:  opencv          
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Comment(by grundmann.matthias@…):

 Replying to [comment:3 njbutko@…]:
 > Replying to [comment:2 grundmann.matthias@…]:
 >
 > > Added some patched portfiles, that remove quicktime and carbon
 support. Compiles and Installs in 64bit on snowleopard.
 >
 > Does this break key features of OpenCV? As I understand it, Quicktime is
 necessary for accessing the webcam and for processing video. Carbon is
 probably used for graphical display. For my purposes, For me, a cross-
 platform mechanism for reading videos, accessing the webcam, and
 displaying images to screen are the reason OpenCV is indispensable, and
 all the other facilities are just convenient libraries.
 >
 > In this case, if a user (such as myself) types "port install opencv" the
 default behavior shouldn't be "build in 64 bit mode and break only those
 key features necessary to still compile," the default behavior should be
 "Build as many dependent ports as possible in universal 32- and 64- bit
 mode, build opencv in 32 bit mode, and warn the user in big flashy letters
 that 64-bit opencv is not currently supported, all linking programs will
 need to be compiled with the -arch i386 flag".

 Agreed, this should not be default behavior on snow leopard. Without
 wanting to argue about the different ways OpenCV is used by developers,
 there are users ( like me ;) ) that would sacrifice webcam support for 64
 bit compilation at this time. This should of course not be a permanent
 solution, but rather a workaround until somebody ports the OpenCV source
 to play nice with qtkit under mac instead of the current quicktime API
 that is used (qtkit runs the old 32bit quicktime in a separate process and
 allows 64bit applications to access it).

 Regarding the graphical UI, the posted version uses gtk instead of carbon
 which is fully 64bit capable. I only found it to be a little bit slower,
 i.e. I had to increase the delay in cvWaitKey from 1 to something like 20
 and create a delay of around 200ms after window creation (takes a little
 while until x11 is up and running).

 I attached a new patch for the portfile, that replaces the previous
 darwin10 behavior with the variant sl_64bit_21014 and is labeled clearly
 as a workaround solution that removes quicktime support.

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Ticket URL: <http://trac.macports.org/ticket/21014#comment:6>
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