mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-14 06:12:01 +01:00
5afab0e5e5
Merge commit 'cf3e3d5bd0a1fae39c74c7db5a4e8b10732d0766' Reviewed by: emaste Differential Revision: https://reviews.freebsd.org/D40226
73 lines
2.2 KiB
Plaintext
73 lines
2.2 KiB
Plaintext
# ===========================================================================
|
|
# https://www.gnu.org/software/autoconf-archive/ax_have_poll.html
|
|
# ===========================================================================
|
|
#
|
|
# SYNOPSIS
|
|
#
|
|
# AX_HAVE_POLL([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
|
|
# AX_HAVE_PPOLL([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
|
|
#
|
|
# DESCRIPTION
|
|
#
|
|
# This macro determines whether the system supports the poll I/O event
|
|
# interface. A neat usage example would be:
|
|
#
|
|
# AX_HAVE_POLL(
|
|
# [AX_CONFIG_FEATURE_ENABLE(poll)],
|
|
# [AX_CONFIG_FEATURE_DISABLE(poll)])
|
|
# AX_CONFIG_FEATURE(
|
|
# [poll], [This platform supports poll(7)],
|
|
# [HAVE_POLL], [This platform supports poll(7).])
|
|
#
|
|
# Some systems -- most notably Linux kernel 2.6.16 and later -- also have
|
|
# the variant ppoll(). The availability of that function can be tested
|
|
# with the second macro. Generally speaking, it is safe to assume that
|
|
# AX_HAVE_POLL would succeed if AX_HAVE_PPOLL has, but not the other way
|
|
# round.
|
|
#
|
|
# LICENSE
|
|
#
|
|
# Copyright (c) 2009 Peter Simons <simons@cryp.to>
|
|
#
|
|
# Copying and distribution of this file, with or without modification, are
|
|
# permitted in any medium without royalty provided the copyright notice
|
|
# and this notice are preserved. This file is offered as-is, without any
|
|
# warranty.
|
|
|
|
#serial 8
|
|
|
|
AC_DEFUN([AX_HAVE_POLL], [dnl
|
|
AC_MSG_CHECKING([for poll(2)])
|
|
AC_CACHE_VAL([ax_cv_have_poll], [dnl
|
|
AC_LINK_IFELSE([dnl
|
|
AC_LANG_PROGRAM(
|
|
[#include <poll.h>],
|
|
[int rc; rc = poll((struct pollfd *)(0), 0, 0);])],
|
|
[ax_cv_have_poll=yes],
|
|
[ax_cv_have_poll=no])])
|
|
AS_IF([test "${ax_cv_have_poll}" = "yes"],
|
|
[AC_MSG_RESULT([yes])
|
|
$1],[AC_MSG_RESULT([no])
|
|
$2])
|
|
])dnl
|
|
|
|
AC_DEFUN([AX_HAVE_PPOLL], [dnl
|
|
AC_MSG_CHECKING([for ppoll(2)])
|
|
AC_CACHE_VAL([ax_cv_have_ppoll], [dnl
|
|
AC_LINK_IFELSE([dnl
|
|
AC_LANG_PROGRAM(
|
|
[dnl
|
|
#include <poll.h>
|
|
#include <signal.h>],
|
|
[dnl
|
|
int rc;
|
|
rc = poll((struct pollfd *)(0), 0, 0);
|
|
rc = ppoll((struct pollfd *)(0), 0, (struct timespec const *)(0), (sigset_t const *)(0));])],
|
|
[ax_cv_have_ppoll=yes],
|
|
[ax_cv_have_ppoll=no])])
|
|
AS_IF([test "${ax_cv_have_ppoll}" = "yes"],
|
|
[AC_MSG_RESULT([yes])
|
|
$1],[AC_MSG_RESULT([no])
|
|
$2])
|
|
])
|