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btrfs-progs: build: only install udev rules for udev >= 190 

Prior to udev v190, there was no btrfs builtin helper.  Installing it on
systems with an older udev will cause problems.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Jeff Mahoney 2016-08-30 21:15:44 -04:00 committed by David Sterba
parent aa6baa178d
commit 752d8fda32
1 changed files with 7 additions and 1 deletions
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8
configure.ac
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@ -161,7 +161,13 @@ PKG_STATIC(UUID_LIBS_STATIC, [uuid])
PKG_CHECK_MODULES(ZLIB, [zlib])
PKG_STATIC(ZLIB_LIBS_STATIC, [zlib])
UDEVDIR="$(pkg-config udev --variable=udevdir)"
# udev v190 introduced the btrfs builtin and a udev rule to use it.
# Our udev rule gives us the friendly dm names but isn't required (or valid)
# on earlier releases.
UDEVDIR=
if pkg-config udev --atleast-version 190; then
UDEVDIR="$(pkg-config udev --variable=udevdir)"
fi
AC_SUBST(UDEVDIR)
dnl lzo library does not provide pkg-config, let use classic way