Allow to specify UDPv4/6 multicast interface

[paraslash.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index afb993af265065e7082adcf9ebbececa99f11b57..13ec59baddd6788c17a6b8e3e0ae415fc4f2bb0e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -267,6 +267,20 @@ fi
 CPPFLAGS="$OLD_CPPFLAGS"
 LDFLAGS="$OLD_LDFLAGS"
 LIBS="$OLD_LIBS"
+
+########################################################################### ip_mreqn
+AC_MSG_CHECKING(for struct ip_mreqn (UDPv4 multicast))
+AC_TRY_LINK([
+       #include <netdb.h>
+       #include <net/if.h>
+],[
+       struct ip_mreqn mn;
+       mn.imr_ifindex = 0;
+],[have_ip_mreqn=yes],[have_ip_mreqn=no])
+AC_MSG_RESULT($have_ip_mreqn)
+if test ${have_ip_mreqn} = yes; then
+       AC_DEFINE(HAVE_IP_MREQN, 1, define to 1 you have struct ip_mreqn)
+fi
 ########################################################################### osx
 
 AC_MSG_CHECKING(for CoreAudio (MacOs))