Commit 5745ca03 authored by Guillem Jover's avatar Guillem Jover

err: Add err(), warn(), errx() and warnx() familiy of functions

Some systems such as Windows or musl-libc based ones do not have these
BSD extensions. In addition libbsd itself is making use of the warnx()
functions, so we better provide these interfaces in case they are
missing.
parent 9628798d
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