On 2/4/13 2:25 PM, "Jose Lopez Lujan" <jm.lopez at utoronto.ca> wrote: > > >env CC="cc -m64" \ > CXX="CC -m64" \ > CFLAGS="-xO2 -m64 " \ > CXXFLAGS="-xO2 -m64 " \ Check the documentation again and you will see that's not a suported set of flags since it doesn't override the standard library to stlport4. -- Scott