diff --git a/configure.ac b/configure.ac
index 48a49b6d..965d60b3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -143,6 +143,13 @@ AC_ARG_WITH(safecode,
   ])
 ])
 
+AC_ARG_WITH(ctgrind,
+[AS_HELP_STRING(--with-ctgrind,For maintainers only - please do not use)],
+[AS_IF([test "x$withval" = "xyes"], [
+    AC_CHECK_LIB(ctgrind, ct_poison, [LIBS="$LIBS -lctgrind"])
+  ])
+])
+
 ENABLE_CWFLAGS=no
 AC_ARG_ENABLE(debug,
 [AS_HELP_STRING(--enable-debug,For maintainers only - please do not use)],