Upgraded linux from version 4.0 to 4.2.3 Upgraded gcc from version 4.8.2 to 5.2.0 Upgraded glibc from version 2.21 to 2.22 Upgraded ncurses from version 5.9 to 6.0 Build ncurses for the toolchain in order to generate terminfo when installing the cross-compiled ncurses. Disable the use of isatty() in make 4.1 since the related code is buggy. Switched from obtaining root certificates ourselves to getting the certificate bundle included with firefox, provided by the curl team. Symlink /usr/lib/gcc/*-linux-gnu to a generic easy-to-find name.