query udev dir via pkg-config

Since udev is moving its internal dir around, query it via pkg-config
rather than hardcoding the old path.  This should work with new/old
versions.

Signed-off-by: Samuli Suominen <ssuominen@gentoo.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: NeilBrown <neilb@suse.de>

diff --git a/Makefile b/Makefile
index 72f609e65b441c17c0fea0a87652bdd56971be98..a3e4027c245d9ebb870222ae6f2b8b36c5e70a32 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -57,6 +57,8 @@ else
  DEFAULT_METADATA=1.2
 endif
 
+PKG_CONFIG ?= pkg-config
+
 SYSCONFDIR = /etc
 CONFFILE = $(SYSCONFDIR)/mdadm.conf
 CONFFILE2 = $(SYSCONFDIR)/mdadm/mdadm.conf
@@ -96,6 +98,11 @@ MAN4DIR = $(MANDIR)/man4
 MAN5DIR = $(MANDIR)/man5
 MAN8DIR = $(MANDIR)/man8
 
+UDEVDIR := $(shell $(PKG_CONFIG) --variable=udevdir udev 2>/dev/null)
+ifndef UDEVDIR
+ UDEVDIR = /lib/udev
+endif
+
 OBJS =  mdadm.o config.o policy.o mdstat.o  ReadMe.o util.o maps.o lib.o \
        Manage.o Assemble.o Build.o \
        Create.o Detail.o Examine.o Grow.o Monitor.o dlink.o Kill.o Query.o \
@@ -255,7 +262,7 @@ install-man: mdadm.8 md.4 mdadm.conf.5 mdmon.8
        $(INSTALL) -D -m 644 mdadm.conf.5 $(DESTDIR)$(MAN5DIR)/mdadm.conf.5
 
 install-udev: udev-md-raid.rules
-       $(INSTALL) -D -m 644 udev-md-raid.rules $(DESTDIR)/lib/udev/rules.d/64-md-raid.rules
+       $(INSTALL) -D -m 644 udev-md-raid.rules $(DESTDIR)$(UDEVDIR)/rules.d/64-md-raid.rules
 
 uninstall:
        rm -f $(DESTDIR)$(MAN8DIR)/mdadm.8 $(DESTDIR)$(MAN8DIR)/mdmon.8 $(DESTDIR)$(MAN4DIR)/md.4 $(DESTDIR)$(MAN5DIR)/mdadm.conf.5 $(DESTDIR)$(BINDIR)/mdadm