2 files changed, 6 insertions, 0 deletions

diff --git a/src/config.in b/src/config.in
index 174f6bac195..7b19feef5a9 100644
--- a/src/config.in
+++ b/src/config.in
@@ -117,6 +117,8 @@ and this notice must be preserved on all copies.  */
 
 #undef HAVE_BCOPY
 
+#undef HAVE_AIX_SMT_EXP
+
 /* If using GNU, then support inline function declarations. */
 #ifdef __GNUC__
 #define INLINE __inline__
diff --git a/src/m/ibmrs6000.h b/src/m/ibmrs6000.h
index d2e612f1b4d..4988ca7f681 100644
--- a/src/m/ibmrs6000.h
+++ b/src/m/ibmrs6000.h
@@ -132,7 +132,11 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 #define ORDINARY_LINK
 /* sfreed@unm.edu says add -bI:/usr/lpp/X11/bin/smt.exp for AIX 3.2.4.  */
+#ifdef HAVE_AIX_SMT_EXP
 #define LD_SWITCH_MACHINE -Wl,-bnso,-bnodelcsect,-bI:/lib/syscalls.exp,-bI:/usr/lpp/X11/bin/smt.exp
+#else
+#define LD_SWITCH_MACHINE -Wl,-bnso,-bnodelcsect,-bI:/lib/syscalls.exp
+#endif
 
 /* AIX supposedly doesn't use this interface, but on thr RS/6000
    it apparently does.  */