diff --git a/configure/CONFIG_COMMON b/configure/CONFIG_COMMON
index 39faec0ed..b77fcf13e 100644
--- a/configure/CONFIG_COMMON
+++ b/configure/CONFIG_COMMON
@@ -97,7 +97,7 @@ GCC_CONFORM_CFLAGS_STRICT = -ansi -pedantic
 GCC_CONFORM_CFLAGS_TRAD = -traditional
 GCC_WARN_YES = -Wall
 GCC_WARN_NO = -w
-GCC_OPT_YES = -O3
+GCC_OPT_YES = -g -O3
 GCC_OPT_NO = -g
 GCC_STATIC_CFLAGS_YES = -static
 GCC_STATIC_CFLAGS_NO =
@@ -113,7 +113,7 @@ G++_CONFORM_CFLAGS_NORMAL = -ansi -pedantic
 G++_CONFORM_CFLAGS_STRICT = -ansi -pedantic
 G++_WARN_YES = -Wall 
 G++_WARN_NO = -w
-G++_OPT_YES = -O3
+G++_OPT_YES = -g -O3
 G++_OPT_NO = -g
 G++_STATIC_CFLAGS_YES = -static
 G++_STATIC_CFLAGS_NO =