--- configure
+++ configure
@@ -1657,8 +1657,8 @@
 fi
 
   if test "$with_debug" = "no"; then
-    CXXFLAGS="`echo $CXXFLAGS | sed s/-g//`"
-    CFLAGS="`echo $CFLAGS | sed s/-g//`"
+    CXXFLAGS="`echo $CXXFLAGS | sed s/\ -g\ //`"
+    CFLAGS="`echo $CFLAGS | sed s/\ -g\ //`"
   fi