[Ada] Keepalive control on Windows

gcc/ada/

	* s-oscons-tmplt.c (TCP_KEEPCNT TCP_KEEPIDLE, TCP_KEEPINTVL):
	Hardcode on Windows if undefined.

diff --git a/gcc/ada/s-oscons-tmplt.c b/gcc/ada/s-oscons-tmplt.c
index d42e663fdde54ea71414b4b7ad2d9f6919519dcc..044e203cdb690ce110bff6a1b346ac4c8dd9add0 100644 (file)
--- a/gcc/ada/s-oscons-tmplt.c
+++ b/gcc/ada/s-oscons-tmplt.c
@@ -1502,18 +1502,36 @@ CNS(MSG_Forced_Flags, "")
 CND(TCP_NODELAY, "Do not coalesce packets")
 
 #ifndef TCP_KEEPCNT
+#ifdef __MINGW32__
+/* Windows headers can be too old to have all available constants.
+ * We know this one. */
+# define TCP_KEEPCNT 16
+#else
 # define TCP_KEEPCNT -1
 #endif
+#endif
 CND(TCP_KEEPCNT, "Maximum number of keepalive probes")
 
 #ifndef TCP_KEEPIDLE
+#ifdef __MINGW32__
+/* Windows headers can be too old to have all available constants.
+ * We know this one. */
+# define TCP_KEEPIDLE 3
+#else
 # define TCP_KEEPIDLE -1
 #endif
+#endif
 CND(TCP_KEEPIDLE, "Idle time before TCP starts sending keepalive probes")
 
 #ifndef TCP_KEEPINTVL
+#ifdef __MINGW32__
+/* Windows headers can be too old to have all available constants.
+ * We know this one. */
+# define TCP_KEEPINTVL 17
+#else
 # define TCP_KEEPINTVL -1
 #endif
+#endif
 CND(TCP_KEEPINTVL, "Time between individual keepalive probes")
 
 #ifndef SO_REUSEADDR