--- a/coregrind/m_debuginfo/readstabs.c
+++ b/coregrind/m_debuginfo/readstabs.c
@@ -44,6 +44,7 @@
 #include "priv_readstabs.h"        /* self */
 
 /* --- !!! --- EXTERNAL HEADERS start --- !!! --- */
+#define CONFIG_ARCH_SUPPORTS_AOUT /* XXX */
 #include <a.out.h> /* stabs defns */
 /* --- !!! --- EXTERNAL HEADERS end --- !!! --- */