Machines that matter to who? Maintainers of packages for OSes that support s390x (RHEL/Fedora, SUSE, Debian), Arduino AVR users, AIX users, embedded systems pe

Machines that matter to who? Maintainers of packages for OSes that support s390x (RHEL/Fedora, SUSE, Debian), Arduino AVR users, AIX users, embedded systems people with, say, Coldfire or some DSP? I don't know to what extent portable code is relevant to embedded systems, but I guess they care about cryptography libraries, for instance. (I know it's bi- in principle, but SPARC is still even in the Top500.)