1#serial 9 2dnl Copyright (C) 2002, 2005-2006, 2009-2022 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_UNISTD_SAFER], 8[ 9 AC_CHECK_FUNCS_ONCE([pipe]) 10]) 11