diff --git a/configure/os/CONFIG_SITE.Common.darwin-ppc b/configure/os/CONFIG_SITE.Common.darwin-ppc
index 78e602059..3c72164fa 100644
--- a/configure/os/CONFIG_SITE.Common.darwin-ppc
+++ b/configure/os/CONFIG_SITE.Common.darwin-ppc
@@ -9,4 +9,5 @@
 #
 # Other local options
 #
+OP_SYS_CFLAGS += -g
 #COMMANDLINE_LIBRARY = READLINE
diff --git a/configure/os/CONFIG_SITE.Common.linux-x86 b/configure/os/CONFIG_SITE.Common.linux-x86
index 139d744f8..9bc519cb7 100644
--- a/configure/os/CONFIG_SITE.Common.linux-x86
+++ b/configure/os/CONFIG_SITE.Common.linux-x86
@@ -20,3 +20,4 @@
 # If readline is not installed comment the following line
 # to omit command-line editing and history support
 COMMANDLINE_LIBRARY = READLINE
+OP_SYS_CFLAGS += -g