--- libexplain-0.45.D001.orig/configure.ac
+++ libexplain-0.45.D001/configure.ac
@@ -26,6 +26,10 @@
 AC_PROG_RANLIB
 AC_PROG_YACC
 
+LT_INIT
+top_builddir=`pwd`
+AC_SUBST(top_builddir)
+
 case "$YACC" in
 *bison*)
   ;;
--- libexplain-0.45.D001.orig/Makefile.in
+++ libexplain-0.45.D001/Makefile.in
@@ -35,6 +35,7 @@
 #
 # directory containing the source
 #
+top_builddir = @top_builddir@
 srcdir = @srcdir@
 VPATH = @srcdir@