diff -urN arpwatch-2.1a10.org/aclocal.m4 arpwatch-2.1a10/aclocal.m4
--- arpwatch-2.1a10.org/aclocal.m4	Sun Jan  7 13:45:01 2001
+++ arpwatch-2.1a10/aclocal.m4	Sun Jan  7 13:46:39 2001
@@ -47,7 +47,6 @@
     AC_BEFORE([$0], [AC_LBL_FIXINCLUDES])
     AC_BEFORE([$0], [AC_LBL_DEVEL])
     AC_ARG_WITH(gcc, [  --without-gcc           don't use gcc])
-    $1="-O"
     $2=""
     if test "${srcdir}" != "." ; then
 	    $2="-I\$(srcdir)"