From 752d8fda32ac645d0cfba82b10e26e17796e626b Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Tue, 30 Aug 2016 21:15:44 -0400 Subject: [PATCH] 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 Signed-off-by: David Sterba --- configure.ac | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/configure.ac b/configure.ac index 97e89f23..8fd8f425 100644 --- a/configure.ac +++ b/configure.ac @@ -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 -- 2.11.4.GIT