The top-level Makefile calls itself for prereq and for the build, and
every call runs getver.sh and get_source_date_epoch.sh again, although
the values are already exported by the first call.
Take them from the environment in recursive calls. The first call still
computes them, so a value in the environment of the user is ignored as
before.
Signed-off-by: John Crispin <john@phrozen.org>
John Crispin
177325ba1a
