Cleanup contrib/initramfs automake

The initramfs hook scripts depend on Makefile.  This way, if the
substitution code is changed, they should update.  This brings it in
line with etc/init.d (which was modified to match the example in the
automake docs).

The initramfs hook script cleaning now matches etc/init.d.

There was a mix of SUBDIRS recursion and custom install rules for files
in subdirectories.  This was duplicated for the "hooks" and "scripts"
subdirectories.  Now everything uses SUBDIRS.

I fixed the substitution of DEFAULT_INITCONF_DIR for hooks/zfs.

Reviewed-By: Andrey Prokopenko <job@terem.fr>
Reviewed-By: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-By: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Richard Laager <rlaager@wiktel.com>
Closes #10027

configure.ac

@@ -92,6 +92,8 @@ AC_CONFIG_FILES([
 	contrib/dracut/90zfs/Makefile
 	contrib/dracut/Makefile
 	contrib/initramfs/Makefile
+	contrib/initramfs/conf.d/Makefile
+	contrib/initramfs/conf-hooks.d/Makefile
 	contrib/initramfs/hooks/Makefile
 	contrib/initramfs/scripts/Makefile
 	contrib/initramfs/scripts/local-top/Makefile

contrib/initramfs/Makefile.am

@@ -1,23 +1,6 @@
 initrddir = /usr/share/initramfs-tools
 
-initrd_SCRIPTS = \
-	conf.d/zfs conf-hooks.d/zfs hooks/zfs scripts/zfs scripts/local-top/zfs
-
-SUBDIRS = hooks scripts
+SUBDIRS = conf.d conf-hooks.d hooks scripts
 
 EXTRA_DIST = \
-	$(top_srcdir)/contrib/initramfs/conf.d/zfs \
-	$(top_srcdir)/contrib/initramfs/conf-hooks.d/zfs \
 	$(top_srcdir)/contrib/initramfs/README.initramfs.markdown
-
-install-initrdSCRIPTS: $(EXTRA_DIST)
-	for d in conf.d conf-hooks.d scripts/local-top; do \
-		$(MKDIR_P) $(DESTDIR)$(initrddir)/$$d; \
-		cp $(top_srcdir)/contrib/initramfs/$$d/zfs \
-		    $(DESTDIR)$(initrddir)/$$d/; \
-	done
-	for d in hooks scripts; do \
-		$(MKDIR_P) $(DESTDIR)$(initrddir)/$$d; \
-		cp $(top_builddir)/contrib/initramfs/$$d/zfs \
-		    $(DESTDIR)$(initrddir)/$$d/; \
-	done

contrib/initramfs/conf-hooks.d/Makefile.am

@@ -0,0 +1,4 @@
+confhooksddir = /usr/share/initramfs-tools/conf-hooks.d
+
+dist_confhooksd_DATA = \
+	zfs

contrib/initramfs/conf.d/Makefile.am

@@ -0,0 +1,4 @@
+confddir = /usr/share/initramfs-tools/conf.d
+
+dist_confd_DATA = \
+	zfs

contrib/initramfs/hooks/Makefile.am

@@ -6,18 +6,13 @@ hooks_SCRIPTS = \
 EXTRA_DIST = \
 	$(top_srcdir)/contrib/initramfs/hooks/zfs.in
 
-$(hooks_SCRIPTS):%:%.in
+$(hooks_SCRIPTS):%:%.in Makefile
 	-$(SED) -e 's,@sbindir\@,$(sbindir),g' \
 		-e 's,@sysconfdir\@,$(sysconfdir),g' \
 		-e 's,@udevdir\@,$(udevdir),g' \
 		-e 's,@udevruledir\@,$(udevruledir),g' \
 		-e 's,@mounthelperdir\@,$(mounthelperdir),g' \
+		-e 's,@DEFAULT_INITCONF_DIR\@,$(DEFAULT_INITCONF_DIR),g' \
 		$< >'$@'
 
-# Double-colon rules are allowed; there are multiple independent definitions.
-clean-local::
-	-$(RM) $(hooks_SCRIPTS)
-
-# Double-colon rules are allowed; there are multiple independent definitions.
-distclean-local::
-	-$(RM) $(hooks_SCRIPTS)
+CLEANFILES = $(hooks_SCRIPTS)

contrib/initramfs/scripts/local-top/Makefile.am

@@ -1,3 +1,4 @@
 localtopdir = /usr/share/initramfs-tools/scripts/local-top
 
-EXTRA_DIST = zfs
+dist_localtop_SCRIPTS = \
+        zfs