diff -u libev-3.43/debian/rules libev-3.43/debian/rules
--- libev-3.43/debian/rules
+++ libev-3.43/debian/rules
@@ -7,10 +7,8 @@
 build: patch build-stamp
 build-stamp:
 	dh build --before configure
-	libtoolize --force
-	aclocal
-	autoheader
-	autoconf
+	mkdir m4
+	autoreconf -f -i 
 	dh build --remaining
 	touch $@
only in patch2:
unchanged:
--- libev-3.43.orig/configure.ac
+++ libev-3.43/configure.ac
@@ -16,3 +16,4 @@
 
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT
+AC_CONFIG_MACRO_DIR([m4])
only in patch2:
unchanged:
--- libev-3.43.orig/Makefile.am
+++ libev-3.43/Makefile.am
@@ -1,4 +1,5 @@
 AUTOMAKE_OPTIONS = foreign no-dependencies
+ACLOCAL_AMFLAGS = -I m4
 
 VERSION_INFO = 3:0