Download or otherwise obtain the following packages:
Home page: http://www.gnu.org/software/binutils/
Download: http://ftp.gnu.org/gnu/binutils/binutils-2.27.tar.bz2
MD5 sum: 2869c9bf3e60ee97c74ac2a6bf4e9d68
Home page: http://www.busybox.net
Download: http://busybox.net/downloads/busybox-1.24.2.tar.bz2
MD5 sum: 2eaae519cac1143bcf583636a745381f
Home page: https://github.com/cross-lfs/bootscripts-embedded
Download: https://github.com/cross-lfs/bootscripts-embedded/archive/master.tar.gz
MD5 sum: N/A
Home page: http://gcc.gnu.org
Download: http://gcc.gnu.org/pub/gcc/releases/gcc-6.2.0/gcc-6.2.0.tar.bz2
MD5 sum: 9768625159663b300ae4de2f4745fcc4
Home page: http://gmplib.org/
Download: http://ftp.gnu.org/gnu/gmp/gmp-6.1.1.tar.bz2
MD5 sum: 4c175f86e11eb32d8bf9872ca3a8e11d
Home page: http://sethwklein.net/iana-etc
Download: http://sethwklein.net/iana-etc-2.30.tar.bz2
MD5 sum: 3ba3afb1d1b261383d247f46cb135ee8
Home page: http://www.kernel.org
Download: http://www.kernel.org/pub/linux/kernel/v4.x/linux-4.9.22.tar.xz
MD5 sum: b6390b3abc02ef4986644fb7051b4568
Home page: http://www.multiprecision.org/
Download: http://ftp.gnu.org/gnu/mpc/mpc-1.0.3.tar.gz
MD5 sum: d6a1d5f8ddea3abd2cc3e98f58352d26
Home page: http://www.mpfr.org/
Download: http://ftp.gnu.org/gnu/mpfr/mpfr-3.1.4.tar.bz2
MD5 sum: b8a2f6b0e68bef46e53da2ac439e1cf4
Home page: http://musl-libc.org/
Download: http://www.musl-libc.org/releases/musl-1.1.16.tar.gz
MD5 sum: ac52ccaec6b06ab0f289d37e8436859b
Total size of these packages: about 216 MB