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-rw-r--r--ares/ares.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/ares/ares.h b/ares/ares.h
index c3959e0b4..09efa133f 100644
--- a/ares/ares.h
+++ b/ares/ares.h
@@ -20,7 +20,10 @@
#include <sys/types.h>
-#ifdef HAVE_SYS_SELECT_H
+#ifdef _AIX
+/* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish
+ libc5-based Linux systems. Only include it on system that are known to
+ require it! */
#include <sys/select.h>
#endif