OpenEmbedded "poky" with some sysmocom specific modifications. Mostly used only up to sysmocom release 201310, but the "pyro" branch is still used for 201705
This resolves an error message like "Can't locate bytes.pm in @INC (@INC contains: /etc/perl /usr/lib/perl/site_perl/5.14.3/ /usr/lib/perl/site_perl/5.14.3 /usr/lib/perl/vendor_perl/5.14.3/ /usr/lib/perl/vendor_perl/5.14.3 /usr/lib/perl/5.14.3/ /usr/lib/perl/5.14.3 /usr/local/lib/site_perl /usr/lib/perl/5.14.3 .) at /usr/lib/perl/vendor_perl/5.14.3//JSON/backportPP.pm line 668."