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-rw-r--r--ace/config-aix-4.1.x.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/ace/config-aix-4.1.x.h b/ace/config-aix-4.1.x.h
index 2b6b36b7972..556079daded 100644
--- a/ace/config-aix-4.1.x.h
+++ b/ace/config-aix-4.1.x.h
@@ -22,6 +22,9 @@
#define ACE_HAS_2_PARAM_ASCTIME_R_AND_CTIME_R
#define ACE_HAS_UNION_WAIT
#define ACE_HAS_TID_T
+// Optimize ACE_Handle_Set for select().
+#define ACE_HAS_HANDLE_SET_OPTIMIZED_FOR_SELECT
+
#define ACE_HAS_SIGWAIT
#define ACE_HAS_H_ERRNO
#define ACE_LACKS_SETSCHED