ax_prototype_setsockopt.m4

# ============================================================================
#  https://www.gnu.org/software/autoconf-archive/ax_prototype_setsockopt.html
# ============================================================================
#
# SYNOPSIS
#
#   AX_PROTOTYPE_SETSOCKOPT
#
# DESCRIPTION
#
#   Requires the AX_PROTOTYPE macro. FIXME: Put this in the code!
#
#   Find the type of argument three of setsockopt. User must include the
#   following in acconfig.h:
#
#    /* Type of third argument of setsockopt */
#    #undef SETSOCKOPT_ARG3
#
# LICENSE
#
#   Copyright (c) 2008 Loic Dachary <loic@senga.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.
#
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#   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.
#
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#   with this program. If not, see <https://www.gnu.org/licenses/>.
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#serial 6

AU_ALIAS([AC_PROTOTYPE_SETSOCKOPT], [AX_PROTOTYPE_SETSOCKOPT])
AC_DEFUN([AX_PROTOTYPE_SETSOCKOPT],[
AX_PROTOTYPE(setsockopt,
 [
  #include <sys/types.h>
  #include <sys/socket.h>
 ],
 [
  int a = 0;
  ARG3 b = 0;
  setsockopt(a, SOL_SOCKET, SO_REUSEADDR, b, sizeof(a));
 ],
 ARG3, [const void*, const char*, void*, char*])
])