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# ============================================================================
# https://www.gnu.org/software/autoconf-archive/ax_func_accept_argtypes.html
# ============================================================================
#
# SYNOPSIS
#
# AX_FUNC_ACCEPT_ARGTYPES
#
# DESCRIPTION
#
# Checks the data types of the three arguments to accept(). Results are
# placed into the symbols ACCEPT_TYPE_ARG[123], consistent with the
# following example:
#
# #define ACCEPT_TYPE_ARG1 int
# #define ACCEPT_TYPE_ARG2 struct sockaddr *
# #define ACCEPT_TYPE_ARG3 socklen_t *
#
# This macro requires AC_CHECK_HEADERS to have already verified the
# presence or absence of sys/types.h and sys/socket.h.
#
# NOTE: This is just a modified version of the AC_FUNC_SELECT_ARGTYPES
# macro. Credit for that one goes to David MacKenzie et. al.
#
# LICENSE
#
# Copyright (c) 2008 Daniel Richard G. <skunk@iskunk.org>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <https://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
# scripts that are the output of Autoconf when processing the Macro. You
# need not follow the terms of the GNU General Public License when using
# or distributing such scripts, even though portions of the text of the
# Macro appear in them. The GNU General Public License (GPL) does govern
# all other use of the material that constitutes the Autoconf Macro.
#
# This special exception to the GPL applies to versions of the Autoconf
# Macro released by the Autoconf Archive. When you make and distribute a
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
#serial 6
AU_ALIAS([AC_FUNC_ACCEPT_ARGTYPES], [AX_FUNC_ACCEPT_ARGTYPES])
AC_DEFUN([AX_FUNC_ACCEPT_ARGTYPES],
[AC_MSG_CHECKING([types of arguments for accept()])
AC_CACHE_VAL(ac_cv_func_accept_arg1,dnl
[AC_CACHE_VAL(ac_cv_func_accept_arg2,dnl
[AC_CACHE_VAL(ac_cv_func_accept_arg3,dnl
[for ac_cv_func_accept_arg1 in 'int' 'unsigned int'; do
for ac_cv_func_accept_arg2 in 'struct sockaddr *' 'void *'; do
for ac_cv_func_accept_arg3 in 'socklen_t *' 'size_t *' 'unsigned int *' 'int *'; do
AC_TRY_COMPILE(dnl
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
extern accept ($ac_cv_func_accept_arg1, $ac_cv_func_accept_arg2, $ac_cv_func_accept_arg3);],,dnl
[ac_not_found=no ; break 3], ac_not_found=yes)
done
done
done
])dnl AC_CACHE_VAL
])dnl AC_CACHE_VAL
])dnl AC_CACHE_VAL
if test "$ac_not_found" = yes; then
ac_cv_func_accept_arg1=int
ac_cv_func_accept_arg2='struct sockaddr *'
ac_cv_func_accept_arg3='socklen_t *'
fi
AC_MSG_RESULT([$ac_cv_func_accept_arg1, $ac_cv_func_accept_arg2, $ac_cv_func_accept_arg3])
AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG1,$ac_cv_func_accept_arg1)
AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG2,$ac_cv_func_accept_arg2)
AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG3,$ac_cv_func_accept_arg3)
])
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