jsled@phoenix [~/stuff/proj/gnucash/src-trunk]$ svn diff configure.in
Index: configure.in
===================================================================
--- configure.in	(revision 15400)
+++ configure.in	(working copy)
@@ -546,6 +546,13 @@
   [  --enable-debug               compile with debugging flags set],
        CFLAGS="${CFLAGS} -g"
        LDFLAGS="${LDFLAGS} -g"
+       GNC_FILTER_CFLAGS="${CFLAGS}"
+       CFLAGS=""
+       for flag in $GNC_FILTER_CFLAGS; do
+         if test "$flag" != "-O2"; then
+           CFLAGS="${CFLAGS} $flag"
+         fi
+       done
        AC_DEFINE(DEBUG_MEMORY,1,Enable debug memory),
        AC_DEFINE(DEBUG_MEMORY,0,Enable debug memory) )