OpenEmbedded "poky" with some sysmocom specific modifications. Mostly used only up to sysmocom release 201310, but the "pyro" branch is still used for 201705
pkg.m4 has been packaged in the main package for a long
while. We certainly don't need this in master anymore.
ERROR: No recipes available for:
/ws/meta-sysmocom-bsp/yocto-master/pkgconfig_0.28.bbappend