diff -aruN a/avahi-daemon/sd-daemon.c b/avahi-daemon/sd-daemon.c
--- a/avahi-daemon/sd-daemon.c	2010-07-12 17:45:20.000000000 -0700
+++ b/avahi-daemon/sd-daemon.c	2010-09-08 09:52:29.000000000 -0700
@@ -328,6 +328,11 @@
 #if defined(DISABLE_SYSTEMD) || !defined(__linux__)
         return 0;
 #else
+# if defined(SOCK_CLOEXEC)
+		int sock_cloexec = SOCK_CLOEXEC;
+# else
+#  define sock_cloexec 0
+# endif
         int fd = -1, r;
         struct msghdr msghdr;
         struct iovec iovec;
@@ -353,7 +358,7 @@
                 goto finish;
         }
 
-        if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0) {
+        if ((fd = socket(AF_UNIX, SOCK_DGRAM|sock_cloexec, 0)) < 0) {
                 r = -errno;
                 goto finish;
         }