1#serial 5
2dnl Copyright (C) 2002, 2005, 2007 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_FUNC_DUP2],
8[
9  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
10  AC_CHECK_FUNCS_ONCE([dup2])
11  if test $ac_cv_func_dup2 = no; then
12    HAVE_DUP2=0
13    AC_LIBOBJ([dup2])
14  fi
15])
16