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