diff -up pfstools-1.7.0/configure.ac~ pfstools-1.7.0/configure.ac
--- pfstools-1.7.0/configure.ac~	2008-10-15 01:38:00.000000000 +0300
+++ pfstools-1.7.0/configure.ac	2009-05-08 22:55:28.000000000 +0300
@@ -29,8 +29,6 @@ AC_ARG_ENABLE(debug,
 		     AC_DEFINE([DEBUG])
 		  fi],
                   [enable_debug="no"
-                     temp_CXXFLAGS=`echo $CXXFLAGS | sed "s/-O./ /; s/-g//"`
-   	             CXXFLAGS="-O3 $temp_CXXFLAGS"
                      AC_DEFINE(NDEBUG, 1, [Disable assertion checks])
                   ])