https://github.com/ZakKemble/avr-gcc-build/releases/download/v12.1.0-1/avr-gcc-12.1.0-x64-linux.tar.bz2
https://maps.altusmetrum.org/qemu-m68k.tar.xz
https://maps.altusmetrum.org/m68k-unknown-elf.tar.xz
https://maps.altusmetrum.org/msp430-unknown-elf.tar.xz
https://maps.altusmetrum.org/sh-unknown-elf-1.tar.xz
https://maps.altusmetrum.org/qemu-arm.tar.xz
https://github.com/ARM-software/LLVM-embedded-toolchain-for-Arm/releases/download/release-18.1.3/LLVM-ET-Arm-18.1.3-Linux-x86_64.tar.xz