Hi,

This should fix the link error on linux
http://github.com/malcolmhumphreys/OpenColorIO/commit/7b016f274aefd8a4ce2deb7c72639351db8de0b4

I always forget how to create these diffs so I guess other people might as well.
$> diff -Naur yaml-cpp-0.2.5 YAML_CPP_LOCAL > mynew.patch

I just edited the YAML_CPP_LOCAL src dir while running make in ext/build till OpenImageIO linked, then running the above command on a freshly extracted yaml-cpp-0.2.5.tar.gz which gives me the patch.

I found when building on a drd box we don't have any boost versions installed locally, these fix this issue.
http://github.com/malcolmhumphreys/OpenColorIO/commit/42c400a00f83a0e02734d9d216b6a07e1b7a4898
http://github.com/malcolmhumphreys/OpenColorIO/commit/8ec728181314d78be3a5d5b91b70793bb5b767b7

I'm not sure if we want to just include the boost/shared_ptr.hpp files or depend on boost.

.malcolm