K 10
svn:author
V 6
rlibby
K 8
svn:date
V 27
2020-12-19T08:38:27.067277Z
K 7
svn:log
V 427
rtld-libc: fix incremental build

ar cr is an update of an archive, not a creation of a new one.  During
incremental builds (e.g. with meta mode) the archive was not getting
cleaned, and so could retain now-deleted objects from previous builds.
Now, delete the archive before creating/updating it.

Reviewed by:	arichardson, bdrewery, kib
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D27663

END