1 files changed, 70 insertions, 0 deletions
diff --git a/mcon/U/d_recvmsg.U b/mcon/U/d_recvmsg.U
new file mode 100644
index 0000000..4e3d488
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+++ b/mcon/U/d_recvmsg.U
@@ -0,0 +1,70 @@
+?RCS: $Id: d_msg_flags.U 59 2010-12-12 10:14:03Z rmanfredi $
+?RCS:
+?RCS: Copyright (c) 2006, Christian Biere
+?RCS:
+?RCS: You may redistribute only under the terms of the Artistic License,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic License; a copy of which may be found at the root
+?RCS: of the source tree for dist 4.0.
+?RCS:
+?MAKE:d_recvmsg: Trylink cat i_systypes i_sysselct i_syssock \
+	i_winsock2 i_mswsock d_windows
+?MAKE:	-pick add $@ %<
+?S:d_recvmsg:
+?S:	This variable conditionally defines the HAS_RECVMSG symbol,
+?S:	which indicates to the C program that the recvmsg() function is
+?S:	available.
+?S:.
+?C:HAS_RECVMSG:
+?C:	This symbol, if defined, indicates that the recvmsg() function
+?C:	is available.
+?C:.
+?H:#$d_recvmsg HAS_RECVMSG		/**/
+?H:.
+?LINT:set d_recvmsg
+: check for recvmsg function
+$cat >try.c <<EOC
+#$i_systypes I_SYS_TYPES
+#$i_sysselct I_SYS_SELECT
+#$i_syssock I_SYS_SOCKET
+#$i_winsock2 I_WINSOCK2
+#$i_mswsock I_MSWSOCK
+#$d_windows WINDOWS_SYSTEM
+#ifdef WINDOWS_SYSTEM
+#define WINVER 0x0501
+#endif
+#ifdef I_SYS_TYPES
+#include <sys/types.h>
+#endif
+#ifdef I_SYS_SOCKET
+#include <sys/socket.h>
+#endif
+#ifdef I_WINSOCK2
+#include <Winsock2.h>
+#endif
+#ifdef I_MSWSOCK
+#include <Mswsock.h>
+#endif
+int main(void)
+{
+	static struct msghdr msg;
+	int ret, fd, flags;
+
+	fd = 1;
+	flags = 1;
+	msg.msg_name = (void *) 0;
+	msg.msg_namelen |= 1;
+	msg.msg_iov = (void *) 0;
+	msg.msg_iovlen |= 1;
+	/* msg.msg_flags is intentionally excluded, see other unit */
+	msg.msg_control = (void *) 0;
+	msg.msg_controllen |= 1;
+	ret = recvmsg(fd, &msg, flags);
+	return ret ? 0 : 1;
+}
+EOC
+cyn='recvmsg'
+set d_recvmsg
+eval $trylink
+