btrfs-progs: configure: check if xmlto exists at configure time
authorMisono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Wed, 11 Apr 2018 08:29:00 +0000 (17:29 +0900)
committerDavid Sterba <dsterba@suse.com>
Tue, 24 Apr 2018 11:00:12 +0000 (13:00 +0200)
commit3491d6277886ddc55643a133d0ebf05a4e0053ed
tree1851edb2cb9bec2a7b3769e884ef3ea190db7b29
parent944974b4854e3f274e1beaa8165765eb385d8558
btrfs-progs: configure: check if xmlto exists at configure time

AC_PATH_PROG won't fail even if it fails to find command path.
xmlto is required for document build and we should report error
if it doesn't exist at configure time.

Signed-off-by: Tomohiro Misono <misono.tomohiro@jp.fujitsu.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
configure.ac