nios2--glibc--bleeding-edge-2017.05-toolchains-1-1 Toolchains are hosted here: http://toolchains.bootlin.com/ All the licenses can be found here: http://toolchains.bootlin.com/downloads/releases/licenses/ All the sources can be found here: http://toolchains.bootlin.com/downloads/releases/sources/ PACKAGE VERSION LICENSE buildroot 2017.05 GPL-2.0+ gcc-final 6.3.0 unknown gawk 4.1.4 GPL-3.0+ gcc-initial 6.3.0 unknown binutils 2.27 GPL-3.0+, libiberty LGPL-2.1+ gmp 6.1.2 LGPL-3.0+ or GPL-2.0+ m4 1.4.18 GPL-3.0+ mpc 1.0.3 LGPL-3.0+ mpfr 3.1.5 LGPL-3.0+ autoconf 2.69 GPL-3.0+ with exceptions libtool 2.4.6 GPL-2.0+ automake 1.15 GPL-2.0+ glibc 2.24 GPL-2.0+ (programs), LGPL-2.1+, BSD-3-Clause, MIT (library) linux-headers 4.9.30 GPL-2.0 dash 0.5.8 BSD-3-Clause, GPL-2.0+ (mksignames.c) For those who would like to reproduce the toolchain, you can just follow these steps: git clone https://github.com/free-electrons/buildroot-toolchains.git buildroot cd buildroot git checkout 2017.05-toolchains-1 curl http://toolchains.bootlin.com/downloads/releases/build_fragments/nios2--glibc--bleeding-edge-2017.05-toolchains-1-1.defconfig > .config make olddefconfig make This toolchain has been built, but the infrastructure does not contains enough informations about testing it. This doesn't mean that this toolchain doesn't work, just that it hasn't been fully tested. FLAG: CAN-NOT-TEST