-# dup3.m4 serial 2
+# dup3.m4 serial 3
dnl Copyright (C) 2009-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
if test $ac_cv_func_dup3 != yes; then
HAVE_DUP3=0
fi
+
+dnl Not needed yet, because dup3 is unconditionally replaced.
+dnl dnl Replace dup3() for supporting the gnulib-defined fchdir() function,
+dnl dnl to keep fchdir's bookkeeping up-to-date.
+dnl m4_ifdef([gl_FUNC_FCHDIR], [
+dnl gl_TEST_FCHDIR
+dnl if test $HAVE_FCHDIR = 0; then
+dnl REPLACE_DUP3=1
+dnl fi
+dnl ])
])