diff -up cups-1.5.2/config.h.in.avahi-1-config cups-1.5.2/config.h.in

--- cups-1.5.2/config.h.in.avahi-1-config	2011-06-16 21:12:16.000000000 +0100

+++ cups-1.5.2/config.h.in	2012-03-14 15:04:51.365347165 +0000

@@ -390,6 +390,13 @@

 /*

+ * Do we have Avahi for DNS Service Discovery?

+ */

+

+#undef HAVE_AVAHI

+

+

+/*

  * Do we have <sys/ioctl.h>?

  */

diff -up cups-1.5.2/config-scripts/cups-dnssd.m4.avahi-1-config cups-1.5.2/config-scripts/cups-dnssd.m4

--- cups-1.5.2/config-scripts/cups-dnssd.m4.avahi-1-config	2011-05-12 06:21:56.000000000 +0100

+++ cups-1.5.2/config-scripts/cups-dnssd.m4	2012-03-14 15:04:51.365347165 +0000

@@ -23,6 +23,21 @@ AC_ARG_WITH(dnssd-includes, [  --with-dn

 DNSSDLIBS=""

 DNSSD_BACKEND=""

+AC_ARG_ENABLE(avahi, [  --enable-avahi          turn on DNS Service Discovery support, default=no],

+	      [if test x$enable_avahi = xyes; then

+		       AC_MSG_CHECKING(for Avahi)

+		       if $PKGCONFIG --exists avahi-client; then

+			       AC_MSG_RESULT(yes)

+			       CFLAGS="$CFLAGS `$PKGCONFIG --cflags avahi-client`"

+			       DNSSDLIBS="`$PKGCONFIG --libs avahi-client`"

+			       DNSSD_BACKEND="dnssd"

+			       AC_DEFINE(HAVE_AVAHI)

+			       enable_dnssd=no

+		       else

+			       AC_MSG_RESULT(no)

+		       fi

+	       fi])

+

 if test x$enable_dnssd != xno; then

 	AC_CHECK_HEADER(dns_sd.h, [

 		case "$uname" in