libreplace: add test for HAVE_IPV6

Samba can later just check libreplace_cv_HAVE_IPV6 = yes.

metze
(cherry picked from commit e835e7eebcc064ce0813814796828f15ad112fbd)
(This used to be commit 1ca4508f3a996982a528942da1b12b94b91e94cd)

diff --git a/source3/lib/replace/libreplace_network.m4 b/source3/lib/replace/libreplace_network.m4
index f2d177b165417ed988a135482d389c7c4a4531f3..6cde6b9e0caf3e0b41e4d13839fad2c18a055266 100644 (file)
--- a/source3/lib/replace/libreplace_network.m4
+++ b/source3/lib/replace/libreplace_network.m4
@@ -339,6 +339,35 @@ if test x"$libreplace_cv_HAVE_IFACE_IFREQ" = x"yes"; then
 fi
 fi
 
+dnl test for ipv6
+AC_CACHE_CHECK([for ipv6 support],libreplace_cv_HAVE_IPV6,[
+       AC_TRY_COMPILE([
+#include <stdlib.h> /* for NULL */
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <netdb.h>
+               ],
+               [
+struct sockaddr_storage sa_store;
+struct addrinfo *ai = NULL;
+struct in6_addr in6addr;
+int idx = if_nametoindex("iface1");
+int s = socket(AF_INET6, SOCK_STREAM, 0);
+int ret = getaddrinfo(NULL, NULL, NULL, &ai);
+if (ret != 0) {
+       const char *es = gai_strerror(ret);
+}
+freeaddrinfo(ai);
+               ],[
+               libreplace_cv_HAVE_IPV6=yes
+               ],[
+               libreplace_cv_HAVE_IPV6=no
+               ])
+])
+if test x"$libreplace_cv_HAVE_IPV6" = x"yes"; then
+    AC_DEFINE(HAVE_IPV6,1,[Whether the system has IPv6 support])
+fi
+
 LIBS=$old_LIBS
 CPPFLAGS="$SAVE_CPPFLAGS"