Description: Only install sysvinit script and ebtables-config when INITDIR or SYSCONFIGDIR are defined

--- ./Makefile.orig	2011-02-07 18:18:23.994696283 +0100
+++ ./Makefile	2011-02-07 18:52:16.226697310 +0100
@@ -157,9 +157,15 @@
 	cat ebtables-save | sed 's/__EXEC_PATH__/$(tmp1)/g' > ebtables-save_
 	install -m 0755 -o root -g root ebtables-save_ $(DESTDIR)$(BINDIR)/ebtables-save
 	cat ebtables.sysv | sed 's/__EXEC_PATH__/$(tmp1)/g' | sed 's/__SYSCONFIG__/$(tmp2)/g' > ebtables.sysv_
+ifdef $(INITDIR)
+	install -d -m 0755 -o root -g root $(DESTDIR)$(INITDIR)
 	install -m 0755 -o root -g root ebtables.sysv_ $(DESTDIR)$(INITDIR)/ebtables
+endif
+ifdef $(SYSCONFIGDIR)
 	cat ebtables-config | sed 's/__SYSCONFIG__/$(tmp2)/g' > ebtables-config_
+	install -d -m 0600 -o root -g root $(DESTDIR)$(SYSCONFIGDIR)
 	install -m 0600 -o root -g root ebtables-config_ $(DESTDIR)$(SYSCONFIGDIR)/ebtables-config
+endif
 	rm -f ebtables-save_ ebtables.sysv_ ebtables-config_
 
 $(MANDIR)/man8/ebtables.8: ebtables.8