--- ./GNUnet.20020615/configure.in	Sun Jun  9 16:38:49 2002
+++ ./GNUnet/configure.in	Sat Jun 15 23:58:30 2002
@@ -91,6 +91,18 @@
      AM_GNUNET_PATH_GTK(1.2.0)]
 )
 
+AC_MSG_CHECKING(wether to link against dmalloc)
+AC_ARG_WITH(dmalloc,
+    [  --with-dmalloc	     Debug using dmalloc (default is no)],
+    [with_dmalloc=yes
+     AC_MSG_RESULT(yes)],
+    [with_dmalloc=no
+     AC_MSG_RESULT(no)]
+)
+if test "$with_dmalloc" = yes; then
+  AC_CHECK_LIB([dmalloc], [main],,AC_MSG_ERROR(cannot find libdmalloc))
+fi
+
 dnl Checks for header files.
 AC_HEADER_DIRENT
 AC_HEADER_STDC