diff -r a2d5fd4c309a -r 7c0ad6bd6a63 configure.ac
--- a/configure.ac	Wed Nov 18 14:38:38 2009 +0100
+++ b/configure.ac	Wed Nov 18 18:37:21 2009 +0000
@@ -83,6 +83,21 @@
 fi
 AM_CONDITIONAL([WANT_TOOLS], [test x"$enable_tools" != x"no"])
 
+dnl Support for running test cases using valgrind.
+use_valgrind=no
+AC_ARG_ENABLE([valgrind],
+AS_HELP_STRING([--enable-valgrind], [use valgrind when running tests]),
+              [use_valgrind=yes])
+
+if [[ "$use_valgrind" = "yes" ]]; then
+  AC_CHECK_PROG(HAVE_VALGRIND, valgrind, yes, no)
+
+  if [[ "$HAVE_VALGRIND" = "no" ]]; then
+    AC_MSG_ERROR([Valgrind not found in PATH.])
+  fi
+fi
+AM_CONDITIONAL(USE_VALGRIND, [test "$use_valgrind" = "yes"])
+
 dnl Checks for header files.
 AC_CHECK_HEADERS(limits.h sys/time.h sys/times.h unistd.h)
 
@@ -128,6 +143,7 @@
 echo CBC support................... : $lx_cbc_found
 echo
 echo Build additional tools........ : $enable_tools
+echo Use valgrind for tests........ : $use_valgrind
 echo
 echo The packace will be installed in
 echo -n '  '