3 dnl Copyright (C) 2011-2024 Free Software Foundation, Inc.
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
8 AC_DEFUN([gl_FUNC_READ],
10 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
11 m4_ifdef([gl_MSVC_INVAL], [
12 AC_REQUIRE([gl_MSVC_INVAL])
13 if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
17 dnl This ifdef is just an optimization, to avoid performing a configure
18 dnl check whose result is not used. It does not make the test of
19 dnl GNULIB_UNISTD_H_NONBLOCKING or GNULIB_NONBLOCKING redundant.
20 m4_ifdef([gl_NONBLOCKING_IO], [
22 if test $gl_cv_have_nonblocking != yes; then
28 # Prerequisites of lib/read.c.
29 AC_DEFUN([gl_PREREQ_READ], [:])