--- /dev/null
+#!/bin/sh
+
+if test x"$srcdir" != x""; then
+ builddir="." # running from make check, but it does not define that
+else
+ srcdir=`echo "$0" | sed s,[^/]*$,,`
+ test "$srcdir" = "$0" && srcdir=.
+ test -z "$srcdir" && srcdir=.
+ builddir="$srcdir" # running manually, have to assume
+fi
+
+srcdir=`cd $srcdir;pwd`
+builddir=`cd $builddir;pwd`
+
+bad_globals=`nm -g --defined-only $builddir/../liba52/*.o|\
+ awk '{if ($3) print $3}'|grep -v '^_\?a52_'`
+
+if test x"$bad_globals" != x""; then
+ echo BAD GLOBAL SYMBOLS:
+ for s in $bad_globals; do echo $s; done
+ exit 1
+fi
+
+exit 0