Add --with-dracutdir configure option

The standard dracut directory has moved from /usr/share/dracut to
/usr/lib/dracut.  To ensure the dracut modules get installed in
the correct location provide a --with-dracutdir configure option
to set the path.

The default install location has been updated to /usr/lib/dracut
which is used by more current versions of Fedora.  However, this
default is overriden by the RPM packaging for consistency.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

config/user-dracut.m4

@@ -0,0 +1,8 @@
+AC_DEFUN([ZFS_AC_CONFIG_USER_DRACUT], [
+	AC_ARG_WITH(dracutdir,
+		AC_HELP_STRING([--with-dracutdir=DIR],
+		[install dracut helpers [[EPREFIX/lib/dracut]]]),
+		dracutdir=$withval, dracutdir='${exec_prefix}/lib/dracut')
+
+	AC_SUBST(dracutdir)
+])

config/user.m4

@@ -3,6 +3,7 @@ dnl # Default ZFS user configuration
 dnl #
 AC_DEFUN([ZFS_AC_CONFIG_USER], [
 	ZFS_AC_CONFIG_USER_UDEV
+	ZFS_AC_CONFIG_USER_DRACUT
 	ZFS_AC_CONFIG_USER_ARCH
 	ZFS_AC_CONFIG_USER_IOCTL
 	ZFS_AC_CONFIG_USER_ZLIB

dracut/90zfs/Makefile.am

@@ -1,4 +1,4 @@
-pkgdracutdir = $(datadir)/dracut/modules.d/90zfs
+pkgdracutdir = $(dracutdir)/modules.d/90zfs
 pkgdracut_SCRIPTS = \
 	$(top_srcdir)/dracut/90zfs/module-setup.sh \
 	$(top_srcdir)/dracut/90zfs/mount-zfs.sh \

zfs.spec.in

@@ -5,6 +5,7 @@
 %define _sbindir         /sbin
 %define _libdir          /%{_lib}
 %define _udevdir         /lib/udev
+%define _dracutdir       %{_datadir}/dracut
 
 Summary:         ZFS Library and Utils
 Group:           Utilities/System
@@ -60,7 +61,10 @@ which are ZFS aware.
 %prep
 %setup
 %build
-%configure --with-config=user --without-blkid --with-udevdir=%{_udevdir}
+%configure --with-config=user \
+           --without-blkid \
+           --with-udevdir=%{_udevdir} \
+           --with-dracutdir=%{_dracutdir}
 make
 
 %install
@@ -94,7 +98,7 @@ rm -rf $RPM_BUILD_ROOT
 
 %files dracut
 %defattr(-,root,root)
-%{_datadir}/dracut/*
+%{_dracutdir}/*
 
 %post
 [ -x /sbin/chkconfig ] && /sbin/chkconfig --add zfs