# =====================================================================
# === Patches specific to qtnetwork                                 ===
# =====================================================================
--- a/src/network/kernel/qdnslookup_unix.cpp	2018-01-18 11:58:42.360052900 +0100
+++ b/src/network/kernel/qdnslookup_unix.cpp	2018-01-18 11:58:42.578839500 +0100
@@ -56,6 +56,8 @@
 
 #if defined(__GNU_LIBRARY__) && !defined(__UCLIBC__)
 #  include <gnu/lib-names.h>
+#elif defined(Q_OS_CYGWIN)
+#  define LIBRESOLV_SO "cygwin1.dll"
 #endif
 
 QT_BEGIN_NAMESPACE
--- a/src/network/kernel/qhostinfo_unix.cpp	2018-01-18 11:58:42.406929200 +0100
+++ b/src/network/kernel/qhostinfo_unix.cpp	2018-01-18 11:58:42.594452600 +0100
@@ -64,6 +64,8 @@
 
 #if defined(__GNU_LIBRARY__) && !defined(__UCLIBC__)
 #  include <gnu/lib-names.h>
+#elif defined(Q_OS_CYGWIN)
+#  define LIBRESOLV_SO "cygwin1.dll"
 #endif
 
 #if defined (QT_NO_GETADDRINFO)
--- a/src/network/socket/qnativesocketengine_unix.cpp	2018-01-19 08:21:39.537806700 +0100
+++ b/src/network/socket/qnativesocketengine_unix.cpp	2018-01-19 08:21:39.600143800 +0100
@@ -203,7 +203,9 @@
     case QNativeSocketEngine::ReceivePacketInformation:
         if (socketProtocol == QAbstractSocket::IPv6Protocol || socketProtocol == QAbstractSocket::AnyIPProtocol) {
             level = IPPROTO_IPV6;
+#ifdef IPV6_RECVPKTINFO
             n = IPV6_RECVPKTINFO;
+#endif
         } else if (socketProtocol == QAbstractSocket::IPv4Protocol) {
             level = IPPROTO_IP;
 #ifdef IP_PKTINFO
@@ -218,7 +220,9 @@
     case QNativeSocketEngine::ReceiveHopLimit:
         if (socketProtocol == QAbstractSocket::IPv6Protocol || socketProtocol == QAbstractSocket::AnyIPProtocol) {
             level = IPPROTO_IPV6;
+#ifdef IPV6_RECVHOPLIMIT
             n = IPV6_RECVHOPLIMIT;
+#endif
         } else if (socketProtocol == QAbstractSocket::IPv4Protocol) {
 #ifdef IP_RECVTTL               // IP_RECVTTL is a non-standard extension supported on some OS
             level = IPPROTO_IP;
@@ -942,6 +946,9 @@
         Q_ASSERT(header);
         qt_socket_getPortAndAddress(&aa, &header->senderPort, &header->senderAddress);
         header->destinationPort = localPort;
+#ifndef MSG_EOR
+#define MSG_EOR 0
+#endif
         header->endOfRecord = (msg.msg_flags & MSG_EOR) != 0;
 
         // parse the ancillary data