As of late December 2011 or so, it seems that openCV can no longer be compiled with VS 2008 due to the use of @std::tr1@ std::tr1 in NCVPyramid.hpp:

<pre>
d:\src\svn\opencv\modules\gpu\src\nvidia\core\NCVPyramid.hpp(69): error: namespace "std::tr1" has no member "shared_ptr"
d:\src\svn\opencv\modules\gpu\src\nvidia\core\NCVPyramid.hpp(69): error: expected a ">"
</pre>

Is the use of tr1 critical? It's currently only in a couple files. I'm not sure it's fair to assume that most people out there have access to VS2010.