1# pipe.m4 serial 2
2dnl Copyright (C) 2010-2022 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_FUNC_PIPE],
8[
9  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
10
11  AC_CHECK_FUNCS_ONCE([pipe])
12  if test $ac_cv_func_pipe != yes; then
13    HAVE_PIPE=0
14  fi
15])
16