+XIPH_ADD_CFLAGS([-Wextra])
+XIPH_ADD_CFLAGS([-Wdeclaration-after-statement])
+XIPH_ADD_CFLAGS([-D_FORTIFY_SOURCE=2])
+
+case "$host_os" in
+ mingw32msvc | mingw32 | freebsd* )
+ # Stack protector not working on these platforms 2013/03/09.
+ ;;
+ *)
+ XIPH_ADD_CFLAGS([-fstack-protector --param ssp-buffer-size=4])
+ ;;
+ esac
+