An ARM squashfs rootfs that runs m5 exit can be generated for example with: make ARCH=arm_A64 CROSS_COMPILE=aarch64-linux-gnu- squashfs The existing Makefile.x86 was not used as a basis because we would like to provide a setup that allows users to use their own compilers if they wish, without requiring dockcross. Change-Id: I19c54cf0575b405f191f45aaf1e4a05c3f2e69ae Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22223 Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com> Tested-by: kokoro <noreply+kokoro@google.com>