Robert Ramey wrote:

BOOST_STATIC_ASSERT(sizeof(class_id_type) == sizeof(int_least16_t)); BOOST_STATIC_ASSERT(sizeof(class_id_reference_type) == sizeof(int_least16_t));

These should  be investigated.  before commenting out.  It could be detecting something unexpected in a pre-requisite library. I'm afraid I haven't neither got the knowledge, nor the skills to investigate it myself :( In case you (or someone else) are willing to investigate it for me, here's a relatively simple way to trigger these errors: 1. Checkout the optware trunk:   $ svn co http://svn.nslu2-linux.org/svnroot/optware/trunk optware 2. Build the toolchain:   $ cd optware; make mbwe-bluering-target   $ cd mbwe-bluering; make directories toolchain ipkg-utils 3. Replace make/boost.mk from the svn with the one attached to this letter 4. Cross-compile:   $ make boost # while remaining in the mbwe-bluering directory Thanks in advance, Alex