https://ftp.gnu.org/gnu/binutils/binutils-2.37.tar.xz
https://ftp.gnu.org/gnu/gcc/gcc-11.2.0/gcc-11.2.0.tar.xz
https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.199.tar.xz
ftp://sourceware.org/pub/newlib/newlib-4.2.0.20211231.tar.gz