--- dar-2.0.0/configure.ac.orig	2003-11-03 15:21:02.000000000 +0100
+++ dar-2.0.0/configure.ac	2003-11-10 02:47:04.252495048 +0100
@@ -145,13 +145,11 @@
 AC_ARG_ENABLE( [debug],
                 AC_HELP_STRING(--enable-debug, [build targets with debugging option and no optimization]),
                 [
-                        CXXFLAGS="-g -Wall"
-                        CFLAGS="-g -Wall"
+                        CXXFLAGS="$CXXFLAGS -Wall"
+                        CFLAGS="$CFLAGS -Wall"
                         debug_static="yes"
                 ],
                 [
-                        CXXFLAGS=-O
-                        CFLAGS=-O
                         debug_static="no"
                 ])