build: MacOSX needs BSD struct ip_mreq hack too
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
diff --git a/configure.ac b/configure.ac
index c51a0d3..b69c99d 100755
--- a/configure.ac
+++ b/configure.ac
@@ -978,7 +978,7 @@
AC_MSG_CHECKING([for BSD struct ip_mreq hack])
AC_TRY_COMPILE([#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
-#endif],[#if (defined(__FreeBSD__) && ((__FreeBSD_version >= 500022 && __FreeBSD_version < 700000) || (__FreeBSD_version < 500000 && __FreeBSD_version >= 440000))) || (defined(__NetBSD__) && defined(__NetBSD_Version__) && __NetBSD_Version__ >= 106010000) || defined(__OpenBSD__)
+#endif],[#if (defined(__FreeBSD__) && ((__FreeBSD_version >= 500022 && __FreeBSD_version < 700000) || (__FreeBSD_version < 500000 && __FreeBSD_version >= 440000))) || (defined(__NetBSD__) && defined(__NetBSD_Version__) && __NetBSD_Version__ >= 106010000) || defined(__OpenBSD__) || defined(__APPLE__)
return (0);
#else
#error No support for BSD struct ip_mreq hack detected