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# ==================================================================================
# https://www.gnu.org/software/autoconf-archive/ax_func_which_getservbyname_r.html
# ==================================================================================
#
# SYNOPSIS
#
# AX_FUNC_WHICH_GETSERVBYNAME_R
#
# DESCRIPTION
#
# Provides a test to determine the correct way to call getservbyname_r:
#
# - defines HAVE_FUNC_GETSERVBYNAME_R_6 if it needs 6 arguments (e.g linux)
# - defines HAVE_FUNC_GETSERVBYNAME_R_5 if it needs 5 arguments (e.g. solaris)
# - defines HAVE_FUNC_GETSERVBYNAME_R_4 if it needs 4 arguments (e.g. osf/1)
#
# An example use can be found at
# http://raf.org/autoconf/net_getservbyname.c
#
# Based on Caolan McNamara's gethostbyname_r macro. Based on David
# Arnold's autoconf suggestion in the threads faq.
#
# LICENSE
#
# Copyright (c) 2008 raf <raf@raf.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 3 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_RAF_FUNC_WHICH_GETSERVBYNAME_R], [AX_FUNC_WHICH_GETSERVBYNAME_R])
AC_DEFUN([AX_FUNC_WHICH_GETSERVBYNAME_R],
[AC_CACHE_CHECK(for getservbyname_r, ax_cv_func_which_getservbyname_r, [
AC_CHECK_FUNC(getservbyname_r, [
AC_TRY_COMPILE([
# include <netdb.h>
], [
char *name;
char *proto;
struct servent *se;
struct servent_data data;
(void) getservbyname_r(name, proto, se, &data);
],ax_cv_func_which_getservbyname_r=four,
[
AC_TRY_COMPILE([
# include <netdb.h>
], [
char *name;
char *proto;
struct servent *se, *res;
char buffer[2048];
int buflen = 2048;
(void) getservbyname_r(name, proto, se, buffer, buflen, &res)
],ax_cv_func_which_getservbyname_r=six,
[
AC_TRY_COMPILE([
# include <netdb.h>
], [
char *name;
char *proto;
struct servent *se;
char buffer[2048];
int buflen = 2048;
(void) getservbyname_r(name, proto, se, buffer, buflen)
],ax_cv_func_which_getservbyname_r=five,ax_cv_func_which_getservbyname_r=no)
]
)
]
)]
,ax_cv_func_which_getservbyname_r=no)])
if test $ax_cv_func_which_getservbyname_r = six; then
AC_DEFINE(HAVE_FUNC_GETSERVBYNAME_R_6)
elif test $ax_cv_func_which_getservbyname_r = five; then
AC_DEFINE(HAVE_FUNC_GETSERVBYNAME_R_5)
elif test $ax_cv_func_which_getservbyname_r = four; then
AC_DEFINE(HAVE_FUNC_GETSERVBYNAME_R_4)
fi
])
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