> OpenBSD doesn't have to care about compatibility as much FreeBSD did it in 2012 (for the 2014 release of 10.0?): * https://github.com/freebsd/freebsd-src/co

> OpenBSD doesn't have to care about compatibility as much FreeBSD did it in 2012 (for the 2014 release of 10.0?): * https://github.com/freebsd/freebsd-src/commit/8f77be2b4ce5e3a3408218495d572d3681d9f5c3 https://github.com/freebsd/freebsd-src/commit/8f77be2b4ce5e3... And has compat layers going back many releases: * https://www.freshports.org/misc/compat4x/ https://www.freshports.org/misc/compat4x/ * https://wiki.freebsd.org/BinaryCompatibility https://wiki.freebsd.org/BinaryCompatibility So newly (re-)compiled programs can take advantage of newer features, but old binaries continue to work.