gnumake default Makefile is not portable, in line 7 insted of $(shell arch), would be better $(shell uname -m)

[antonto]

From https://www.gnu.org/software/coreutils/manual/html_node/arch-invocation.html :"arch is not installed by default, so portable scripts should not rely on its existence."

"uname -m" is more portable

[silent]

Thanks, we will update Makefile :)