Does anyone know how to suppress warning messages made by HP-UX aCC compiler. In particular: "/scratch/ma/ma0/hpia64/boost/boost_1_39_0/boost/filesystem/operations.hpp", line 579: warning #2236-D: controlling expression is constant && "boost::filesystem::complete() precondition not met" ); I get so many of these, its difficult to see the wood from the trees. Any help appreciated. Best regards, Ta, Avi