--- nxproxy/configure.in.orig	2008-12-18 15:57:48.000000000 +0100
+++ nxproxy/configure.in	2008-12-18 15:57:55.000000000 +0100
@@ -5,11 +5,6 @@
 AC_INIT(Main.c)
 AC_PREREQ(2.13)
 
-dnl Reset default compilation flags.
-
-CXXFLAGS="-O3"
-CPPFLAGS="-O3"
-
 dnl Prefer headers and libraries from nx-X11 if present.
 
 if test -d "../nx-X11/exports/include" ; then