diff -Naur ktorrent-2.2.5/configure.in.in ktorrent-2.2.5.new/configure.in.in
--- ktorrent-2.2.5/configure.in.in	2008-01-27 13:06:11.000000000 +0100
+++ ktorrent-2.2.5.new/configure.in.in	2008-01-29 02:05:00.766380548 +0100
@@ -179,26 +179,31 @@
 m4_pattern_allow(PKG_CONFIG_MIN_VERSION)
 PKG_PROG_PKG_CONFIG
 
-PKG_CHECK_MODULES( AVAHI,  avahi-client >= 0.6.10, 
-[ 
-	AC_SUBST(AVAHI_CFLAGS)
-	AC_SUBST(AVAHI_LIBS)
-	avahi=true
-],
-[
-	missing_avahi_warning=yes
-	avahi=false
-])
+AC_ARG_WITH([avahi], AS_HELP_STRING([--without-avahi], [Build without avahi/ZeroConf support (default: test)]))
 
-PKG_CHECK_MODULES( AVAHI_QT3,  avahi-qt3 >= 0.6.10, 
-[ 
-	AC_SUBST(AVAHI_QT3_CFLAGS)
-	AC_SUBST(AVAHI_QT3_LIBS)
-	avahi=true
-],
-[
-	missing_avahi_warning=yes
-	avahi=false
-])
+avahi=false
+if test "x$with_avahi" != "xno"; then
+	PKG_CHECK_MODULES( AVAHI,  avahi-client >= 0.6.10, 
+	[ 
+		AC_SUBST(AVAHI_CFLAGS)
+		AC_SUBST(AVAHI_LIBS)
+		avahi=true
+	],
+	[
+		missing_avahi_warning=yes
+		avahi=false
+	])
+
+	PKG_CHECK_MODULES( AVAHI_QT3,  avahi-qt3 >= 0.6.10, 
+	[ 
+		AC_SUBST(AVAHI_QT3_CFLAGS)
+		AC_SUBST(AVAHI_QT3_LIBS)
+		avahi=true
+	],
+	[
+		missing_avahi_warning=yes
+		avahi=false
+	])
+fi
 
 AM_CONDITIONAL(COMPILE_ZEROCONF, test x$avahi = xtrue)