Solve a problem when cross-compiling for PPC32 - in this case, OPAL_HAVE_ATOMIC_CMPSET_64 is not set, but the code requires that the ADD_64 and SUB_64 values at least be defined.

This commit was SVN r24528.

opal/include/opal/sys/atomic_impl.h

@@ -101,6 +101,16 @@ opal_atomic_sub_64(volatile int64_t *addr, int64_t delta)
 }
 #endif  /* OPAL_HAVE_ATOMIC_SUB_64 */
 
+#else
+
+#if !defined(OPAL_HAVE_ATOMIC_ADD_64)
+#define OPAL_HAVE_ATOMIC_ADD_64 0
+#endif
+
+#if !defined(OPAL_HAVE_ATOMIC_SUB_64)
+#define OPAL_HAVE_ATOMIC_SUB_64 0
+#endif
+
 #endif  /* OPAL_HAVE_ATOMIC_CMPSET_64 */