diff -u configure.ac.v0 configure.ac
--- configure.ac.v0	2006-09-04 07:11:33.000000000 +0200
+++ configure.ac	2006-09-04 07:11:45.000000000 +0200
@@ -49,7 +49,7 @@
 fi
 # - libmagic
 AC_CHECK_HEADERS([magic.h], [], [AC_MSG_ERROR([libmagic magic.h header file not found])])
-AC_CHECK_LIB([magic], [magic_open], [AC_SUBST([LIBMAGIC], [-lmagic])], [AC_MSG_ERROR([libmagic library or magic_open function not found])])
+AC_CHECK_LIB([magic], [magic_open], [AC_SUBST([LIBMAGIC], [-lmagic])], [AC_MSG_ERROR([libmagic library or magic_open function not found])], [-lz])
 
 # - ID3Lib
 AC_LIB_ID3
diff -u m4/ac_lib_upnp.m4.v0 m4/ac_lib_upnp.m4
--- m4/ac_lib_upnp.m4.v0	2006-04-08 17:12:02.000000000 +0200
+++ m4/ac_lib_upnp.m4	2006-09-04 16:07:40.000000000 +0200
@@ -73,7 +73,7 @@
 	  AC_DEFINE([HAVE_LIBUPNP])
 	  foundupnp=1
           $1
-        ])
+        ], [-lpthread])
         LIBS="$saved_LIBS"
       ])
       CPPFLAGS="$saved_CPPFLAGS"