If you compile GNU Radio 3.3.0 from the tarball with GCC 4.5, it will fail in usrp2/host/lib with the error cannot convert ‘int*’ to ‘usrp2::usrp2*’ in initialization.

This has been fixed in the git master tree, but the workaround is in the following simple patch: http://lists.gnu.org/archive/html/discuss-gnuradio/2010-11/txtmYZKblx4HF.txt

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