diff --git a/configure b/configure
index 09acfea60ae..17705e03f8c 100755
--- a/configure
+++ b/configure
@@ -8746,7 +8746,74 @@ cat >>confdefs.h <<\_ACEOF
 #define HAVE_NAS 1
 _ACEOF
 
-                        NASLIBS="-laudio -lXt $X_LIBS -lXext -lX11 $X_EXTRA_LIBS"
+                        { echo "$as_me:$LINENO: checking for XauGetBestAuthByAddr in -lXau" >&5
+echo $ECHO_N "checking for XauGetBestAuthByAddr in -lXau... $ECHO_C" >&6; }
+if test "${ac_cv_lib_Xau_XauGetBestAuthByAddr+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lXau $X_LIBS $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char XauGetBestAuthByAddr ();
+int
+main ()
+{
+return XauGetBestAuthByAddr ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_link") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext &&
+       $as_test_x conftest$ac_exeext; then
+  ac_cv_lib_Xau_XauGetBestAuthByAddr=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_cv_lib_Xau_XauGetBestAuthByAddr=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_lib_Xau_XauGetBestAuthByAddr" >&5
+echo "${ECHO_T}$ac_cv_lib_Xau_XauGetBestAuthByAddr" >&6; }
+if test $ac_cv_lib_Xau_XauGetBestAuthByAddr = yes; then
+  NASLIBS="-lXau -laudio -lXt $X_LIBS -lXext -lX11 $X_EXTRA_LIBS"
+else
+  NASLIBS="-laudio -lXt $X_LIBS -lXext -lX11 $X_EXTRA_LIBS"
+fi
+
+
 fi
 
 fi
diff --git a/configure.ac b/configure.ac
index d38e84eb53e..5d8cb526419 100644
--- a/configure.ac
+++ b/configure.ac
@@ -457,7 +457,11 @@ then
          [AC_CHECK_HEADERS(audio/soundlib.h,,,[#include <audio/audiolib.h>])
           AC_CHECK_LIB(audio,AuCreateFlow,
                        [AC_DEFINE(HAVE_NAS,1,[Define if you have NAS including devel headers])
-                        NASLIBS="-laudio -lXt $X_LIBS -lXext -lX11 $X_EXTRA_LIBS"],,
+                        AC_CHECK_LIB(Xau,XauGetBestAuthByAddr,
+                          [NASLIBS="-lXau -laudio -lXt $X_LIBS -lXext -lX11 $X_EXTRA_LIBS"],
+                          [NASLIBS="-laudio -lXt $X_LIBS -lXext -lX11 $X_EXTRA_LIBS"],
+                          [$X_LIBS])
+                       ],,
                        [-lXt $X_LIBS -lXext -lX11 $X_EXTRA_LIBS])])
 
     CPPFLAGS="$ac_save_CPPFLAGS"