%general-entities; ]> CFLAGS and CXXFLAGS must not be set during the building of cross-tools. To disable CFLAGS and CXXFLAGS use the following commands: unset CFLAGS unset CXXFLAGS Now add these to ~/.bashrc, just in case you have to exit and restart building later: echo unset CFLAGS >> ~/.bashrc echo unset CXXFLAGS >> ~/.bashrc