--- configure.in.orig	2007-11-13 23:01:28.000000000 +0100
+++ configure.in	2008-02-24 09:28:41.000000000 +0100
@@ -445,10 +445,15 @@
          if [[ $have_alsa = "yes" ]] ; then
             LIBS="$LIBS -lasound"
          fi
-         PKG_CHECK_MODULES(JACK, jack, have_jack=yes, have_jack=no)
-         if [[ $have_jack = "yes" ]] ; then
-            LIBS="$LIBS $JACK_LIBS"
-         fi
+	 AC_ARG_WITH([jack], AS_HELP_STRING([--without-jack], [Build without jack library (default: test)]))
+	 if test "x$with_jack" != "xno"; then
+            PKG_CHECK_MODULES(JACK, [jack >=0.103], have_jack=yes, have_jack=no)
+	    if [[ $have_jack = "yes" ]] ; then
+        	LIBS="$LIBS $JACK_LIBS"
+	    else
+		AC_MSG_ERROR([Support for jack library requested but no suitable version available])
+            fi
+	 fi	
          AC_CHECK_LIB(hpi, HPI_SubSysCreate, have_asihpi=yes, have_asihpi=no, -lm)
          if [[ $have_asihpi = "yes" ]] ; then
             LIBS="$LIBS -lhpi"