1# read.m4 serial 5
2dnl Copyright (C) 2011-2020 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_READ],
8[
9  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
10  m4_ifdef([gl_MSVC_INVAL], [
11    AC_REQUIRE([gl_MSVC_INVAL])
12    if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
13      REPLACE_READ=1
14    fi
15  ])
16  dnl This ifdef is just an optimization, to avoid performing a configure
17  dnl check whose result is not used. It does not make the test of
18  dnl GNULIB_UNISTD_H_NONBLOCKING or GNULIB_NONBLOCKING redundant.
19  m4_ifdef([gl_NONBLOCKING_IO], [
20    gl_NONBLOCKING_IO
21    if test $gl_cv_have_nonblocking != yes; then
22      REPLACE_READ=1
23    fi
24  ])
25])
26
27# Prerequisites of lib/read.c.
28AC_DEFUN([gl_PREREQ_READ], [:])
29