Fix Win32 build with plain VC6 compiler

The Socket extension module currently doesn't compile on Win32 using the
VC6 compiler with its standard headers. It can be made to work by using
the 2003 Platform SDK, but it is preferable not to need to do that.

This patch is by Jan Dubois, taken from
http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2011-11/msg00557.html

The patch is modified slightly to take account of MinGW already providing
the missing struct definition, but may yet need some further tweaks since
it was not quite finished by Jan yet.

1 files changed, 101 insertions, 0 deletions

diff --git a/win32/include/sys/socket.h b/win32/include/sys/socket.h
index 3b92b13d54..26a92c78dd 100644
--- a/win32/include/sys/socket.h
+++ b/win32/include/sys/socket.h
@@ -30,11 +30,17 @@
 #    include <ws2tcpip.h>
 
 #    ifndef SIO_GET_INTERFACE_LIST_EX
+
+#      ifndef MSG_WAITALL
+#        define MSG_WAITALL     0x8
+#      endif
+
        /* The ws2tcpip.h header included in VC6 doesn't define the
         * sin6_scope_id member of sockaddr_in6.  We define our own
         * version and redefine sockaddr_in6 to point to this one
         * instead for compiling e.g. Socket.xs.
         */
+
        struct my_sockaddr_in6 {
            short   sin6_family;        /* AF_INET6 */
            u_short sin6_port;          /* Transport level port number */
@@ -71,11 +77,106 @@
 (x)->sin6_scope_id = 0; \
 }
 
+#      ifndef IPV6_HDRINCL
+#        define IPV6_HDRINCL            2
+#      endif
+#      ifndef IPV6_UNICAST_HOPS
+#        define IPV6_UNICAST_HOPS       4
+#      endif
+#      ifndef IPV6_MULTICAST_IF
+#        define IPV6_MULTICAST_IF       9
+#      endif
+#      ifndef IPV6_MULTICAST_HOPS
+#        define IPV6_MULTICAST_HOPS     10
+#      endif
+#      ifndef IPV6_MULTICAST_LOOP
+#        define IPV6_MULTICAST_LOOP     11
+#      endif
+#      ifndef IPV6_ADD_MEMBERSHIP
+#        define IPV6_ADD_MEMBERSHIP     12
+#      endif
+#      ifndef IPV6_DROP_MEMBERSHIP
+#        define IPV6_DROP_MEMBERSHIP    13
+#      endif
+#      ifndef IPV6_JOIN_GROUP
+#        define IPV6_JOIN_GROUP         IPV6_ADD_MEMBERSHIP
+#      endif
+#      ifndef IPV6_LEAVE_GROUP
+#        define IPV6_LEAVE_GROUP        IPV6_DROP_MEMBERSHIP
+#      endif
+#      ifndef IPV6_PKTINFO
+#        define IPV6_PKTINFO            19
+#      endif
+#      ifndef IPV6_HOPLIMIT
+#        define IPV6_HOPLIMIT           21
+#      endif
+#      ifndef IPV6_PROTECTION_LEVEL
+#        define IPV6_PROTECTION_LEVEL   23
+#      endif
+
+       /* The ws2tcpip.h header included in MinGW includes ipv6_mreq already */
+#      ifndef __GNUC__
+         typedef struct ipv6_mreq {
+             struct in_addr6 ipv6mr_multiaddr;
+             unsigned int    ipv6mr_interface;
+         } IPV6_MREQ;
+#      endif
+
+#      ifndef EAI_AGAIN
+#        define EAI_AGAIN       WSATRY_AGAIN
+#      endif
+#      ifndef EAI_BADFLAGS
+#        define EAI_BADFLAGS    WSAEINVAL
+#      endif
+#      ifndef EAI_FAIL
+#        define EAI_FAIL        WSANO_RECOVERY
+#      endif
+#      ifndef EAI_FAMILY
+#        define EAI_FAMILY      WSAEAFNOSUPPORT
+#      endif
+#      ifndef EAI_MEMORY
+#        define EAI_MEMORY      WSA_NOT_ENOUGH_MEMORY
+#      endif
+#      ifndef EAI_NODATA
+#        define EAI_NODATA      WSANO_DATA
+#      endif
+#      ifndef EAI_NONAME
+#        define EAI_NONAME      WSAHOST_NOT_FOUND
+#      endif
+#      ifndef EAI_SERVICE
+#        define EAI_SERVICE     WSATYPE_NOT_FOUND
+#      endif
+#      ifndef EAI_SOCKTYPE
+#        define EAI_SOCKTYPE    WSAESOCKTNOSUPPORT
+#      endif
+
+#      ifndef NI_NOFQDN
+#        define NI_NOFQDN       0x01
+#      endif
+#      ifndef NI_NUMERICHOST
+#        define NI_NUMERICHOST  0x02
+#      endif
+#      ifndef NI_NAMEREQD
+#        define NI_NAMEREQD     0x04
+#      endif
+#      ifndef NI_NUMERICSERV
+#        define NI_NUMERICSERV  0x08
+#      endif
+#      ifndef NI_DGRAM
+#        define NI_DGRAM        0x10
+#      endif
+
 #    endif
 
 #  endif
 #endif
 
+/* Early Platform SDKs have an incorrect definition of EAI_NODATA */
+#if (EAI_NODATA == EAI_NONAME)
+#  undef EAI_NODATA
+#  define EAI_NODATA WSANO_DATA
+#endif
+
 #include "win32.h"
 
 #ifdef __cplusplus