diff -r 7c4ba7daaf5f -r 2b6bffe0e7e8 configure.ac
--- a/configure.ac	Tue Dec 20 17:44:38 2011 +0100
+++ b/configure.ac	Tue Dec 20 18:15:14 2011 +0100
@@ -41,6 +41,7 @@
 AC_PROG_LIBTOOL
 
 AC_CHECK_PROG([doxygen_found],[doxygen],[yes],[no])
+AC_CHECK_PROG([python_found],[python],[yes],[no])
 AC_CHECK_PROG([gs_found],[gs],[yes],[no])
 
 dnl Detect Intel compiler.
@@ -82,6 +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 +144,7 @@
 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 '  '