path: root/mcon/U/d_getifaddrs.U
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+?RCS: $Id: d_getifaddrs.U 167 2013-05-08 17:58:00Z rmanfredi $
+?RCS: Copyright (c) 2006, Christian Biere
+?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.
+?MAKE:d_getifaddrs: Trylink cat i_netif
+?MAKE: -pick add $@ %<
+?S: This variable conditionally defines the HAS_GETIFADDRS symbol, which
+?S: indicates to the C program that getifaddrs() support is available.
+?C: This symbol is defined when getifaddrs() and freeifaddrs() can be used.
+?H:#$d_getifaddrs HAS_GETIFADDRS
+?LINT: set d_getifaddrs
+: can we use getifaddrs?
+$cat >try.c <<EOC
+#include <sys/types.h>
+#include <sys/socket.h>
+#$i_netif I_NET_IF
+#ifdef I_NET_IF
+#include <net/if.h>
+#include <ifaddrs.h>
+int main(void)
+ struct ifaddrs *ifa0, *ifa;
+ static int ret;
+ ret |= getifaddrs(&ifa0);
+ for (ifa = ifa0; ifa; ifa = ifa->ifa_next) {
+ (void) ifa->ifa_flags;
+ (void) ifa->ifa_addr;
+ (void) ifa->ifa_addr->sa_family;
+ (void) ifa->ifa_netmask;
+ if ((IFF_LOOPBACK | IFF_UP | IFF_RUNNING) & ifa->ifa_flags)
+ break;
+ }
+ freeifaddrs(ifa0);
+ return 0;
+set d_getifaddrs
+eval $trylink