I also have dowloaded  this by svn is the same thing :

svn co https://opencvlibrary.svn.sourceforge.net/svnroot/opencvlibrary opencvlibrary 

and found this inside: 

opencvlibrary/trunk/opencv (with a make_frameworks.sh so it seems related to os X)


but also this opencvlibrary/brabches/MACOSX_DEVELOPMENT which seems to not be the same thing.

(apparentely I tried yesterday to install all the stuff I found so that's why ther was such a bazar in my usr/local/lib and  usr/local/include ...

can someone please tell me the one and only one stuff I need to install.

thanks

loic