From 3e86987f5f5f36287fb061470b570744eb1f8d86 Mon Sep 17 00:00:00 2001
From: Dmitry Podgorny <pasis.ua@gmail.com>
Date: Wed, 11 May 2016 11:28:45 +0300
Subject: [PATCH] sock: fixed build on cygwin

Cygwin doesn't have TCP_KEEPIDLE nor TCP_KEEPALIVE. Therefore, don't
change any tcp keepalive parameter on this system.
---
 src/sock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sock.c b/src/sock.c
index 1663de5..78a3d1f 100644
--- a/src/sock.c
+++ b/src/sock.c
@@ -132,7 +132,7 @@ int sock_set_keepalive(const sock_t sock, int timeout, int interval)
     if (optval) {
 #ifdef TCP_KEEPIDLE
         ret = setsockopt(sock, IPPROTO_TCP, TCP_KEEPIDLE, &timeout, sizeof(timeout));
-#else
+#elif defined(TCP_KEEPALIVE)
         /* QNX receives `struct timeval' as argument, but it seems OSX does int */
         ret = setsockopt(sock, IPPROTO_TCP, TCP_KEEPALIVE, &timeout, sizeof(timeout));
 #endif /* TCP_KEEPIDLE */