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source: trunk/aclocal.m4@ 136

Last change on this file since 136 was 129, checked in by rainer, 17 years ago
Detect whether the OS supports posix threads.
File size: 55.0 KB

Rev	Line
[1]	1	dnl aclocal.m4 generated automatically by aclocal 1.3
	2
	3	dnl Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
	4	dnl This Makefile.in is free software; the Free Software Foundation
	5	dnl gives unlimited permission to copy and/or distribute it,
	6	dnl with or without modifications, as long as this notice is preserved.
	7
	8	dnl This program is distributed in the hope that it will be useful,
	9	dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
	10	dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
	11	dnl PARTICULAR PURPOSE.
	12
	13	#
	14	# Check to make sure that the build environment is sane.
	15	#
	16	AC_DEFUN([AM_INIT_AUTOMAKE],
	17	[
[43]	18	AC_REQUIRE([AC_PROG_INSTALL])
[1]	19	PACKAGE=[$1]
	20	AC_SUBST(PACKAGE)
	21	VERSION=[$2]
	22	AC_SUBST(VERSION)
	23	dnl test to see if srcdir already configured
	24	if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
	25	AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
	26	fi
	27	ifelse([$3],,
	28	AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE")
	29	AC_DEFINE_UNQUOTED(VERSION, "$VERSION"))
	30	AC_REQUIRE([AC_PROG_MAKE_SET])])
	31
	32
	33	# Define a conditional.
	34
	35	AC_DEFUN([AM_CONDITIONAL],
	36	[AC_SUBST($1_TRUE)
	37	AC_SUBST($1_FALSE)
	38	if $2; then
	39	$1_TRUE=
	40	$1_FALSE='#'
	41	else
	42	$1_TRUE='#'
	43	$1_FALSE=
	44	fi])
	45
	46
	47	AC_DEFUN([sh_run_prog],
	48	[if test "$cross_compiling" = "yes"; then
	49	AC_MSG_ERROR([Can not probe non-portable values when cross compiling])
	50	fi
	51	cat > conftest.$ac_ext <<EOF
	52	[#]line __oline__ "configure"
	53	#include "confdefs.h"
	54	ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
	55	extern "C" void exit(int);
	56	#endif
	57	])
	58	[$1]
	59	EOF
	60	if AC_TRY_EVAL(ac_link) && test -s conftest && $2=`(./conftest 2>/dev/null)`
	61	then
	62	dnl Don't remove the temporary files here, so they can be examined.
	63	ifelse([$3], , :, [$3])
	64	else
	65	echo "configure: failed program was:" >&AC_FD_CC
	66	cat conftest.$ac_ext >&AC_FD_CC
	67	ifelse([$4], , , [ rm -fr conftest*
	68	$4
	69	])
	70	fi
	71	rm -fr conftest* ])
	72
	73	dnl fs type number of the proc filing system
	74	AC_DEFUN([sh_procfs_id],
	75	[AC_MSG_CHECKING([f_type of /proc])
	76	AC_CACHE_VAL([sh_cv_proc_fstype],
	77	[sh_run_prog(
	78	changequote(<<, >>)dnl
	79	<<#include <stdio.h>
	80	#ifdef HAVE_STDLIB_H
	81	#include <stdlib.h>
	82	#endif /* HAVE_STDLIB_H */
	83	#ifdef HAVE_UNISTD_H
	84	#include <unistd.h>
	85	#endif /* HAVE_UNISTD_H */
	86	#ifdef HAVE_SYS_VFS_H
	87	#include <sys/vfs.h>
	88	#endif
	89	#ifndef Q
	90	#define __Q(x) #x
	91	#define Q(x) __Q(x)
	92	#endif
	93	int main(void)
	94	{
	95	struct statfs fsbuf;
	96	long ft;
	97	if (statfs("/", &fsbuf)!=0)
	98	exit(1);
	99	ft=fsbuf.f_type;
	100	if (statfs("/proc/1", &fsbuf)!=0)
	101	exit(1);
	102	if (ft!=fsbuf.f_type)
	103	printf("0x%08lx", fsbuf.f_type);
	104	else
	105	puts("statfs useless");
	106	exit(0);
	107	} >>
	108	changequote([, ]), sh_cv_proc_fstype,, sh_cv_proc_fstype="a fatal error occured")])
	109	AC_MSG_RESULT($sh_cv_proc_fstype)
	110	if test "${sh_cv_proc_fstype}" = "a fatal error occured"; then
	111	$1=$2
	112	$4
	113	else if test "${sh_cv_proc_fstype}" = "statfs useless"; then
	114	$1=$2
	115	$4
	116	else
	117	$1=$sh_cv_proc_fstype
	118	$3
	119	fi; fi ])
	120
	121	# Check whether mlock is broken (hpux 10.20 raises a SIGBUS if mlock
	122	# is not called from uid 0 (not tested whether uid 0 works)
	123	dnl AC_CHECK_MLOCK
	124	dnl
	125	define([AC_CHECK_MLOCK],
	126	[ AC_CHECK_FUNCS(mlock)
	127	if test "$ac_cv_func_mlock" = "yes"; then
	128	AC_MSG_CHECKING(whether mlock is broken)
	129	AC_CACHE_VAL(ac_cv_have_broken_mlock,
	130	AC_TRY_RUN([
	131	#include <stdlib.h>
	132	#include <unistd.h>
	133	#include <errno.h>
	134	#include <sys/mman.h>
	135	#include <sys/types.h>
	136	#include <fcntl.h>
	137
	138	int main()
	139	{
	140	char *pool;
	141	int err;
	142	long int pgsize = getpagesize();
	143
	144	pool = malloc( 4096 + pgsize );
	145	if( !pool )
	146	return 2;
	147	pool += (pgsize - ((long int)pool % pgsize));
	148
	149	err = mlock( pool, 4096 );
	150	if( !err \|\| errno == EPERM )
	151	return 0; /* okay */
	152
	153	return 1; /* hmmm */
	154	}
	155
	156	],
	157	ac_cv_have_broken_mlock="no",
	158	ac_cv_have_broken_mlock="yes",
	159	ac_cv_have_broken_mlock="assume-no"
	160	)
	161	)
	162	if test "$ac_cv_have_broken_mlock" = "yes"; then
	163	AC_DEFINE(HAVE_BROKEN_MLOCK)
	164	AC_MSG_RESULT(yes)
	165	else
	166	if test "$ac_cv_have_broken_mlock" = "no"; then
	167	AC_MSG_RESULT(no)
	168	else
	169	AC_MSG_RESULT(assuming no)
	170	fi
	171	fi
	172	fi
	173	])
	174
	175	dnl @synopsis AC_FUNC_VSNPRINTF
	176	dnl
	177	dnl Check whether there is a reasonably sane vsnprintf() function installed.
	178	dnl "Reasonably sane" in this context means never clobbering memory beyond
	179	dnl the buffer supplied, and having a sensible return value. It is
	180	dnl explicitly allowed not to NUL-terminate the return value, however.
	181	dnl
	182	dnl @version $Id: ac_func_vsnprintf.m4,v 1.1 2001/07/26 02:00:21 guidod Exp $
	183	dnl @author Gaute Strokkenes <gs234@cam.ac.uk>
	184	dnl
	185	AC_DEFUN([SL_CHECK_VSNPRINTF],
	186	[AC_CACHE_CHECK(for working vsnprintf,
	187	ac_cv_func_vsnprintf,
	188	[AC_TRY_RUN(
	189	[#include <stdio.h>
	190	#include <stdarg.h>
	191
	192	int
	193	doit(char * s, ...)
	194	{
	195	char buffer[32];
	196	va_list args;
	197	int r;
	198
	199	buffer[5] = 'X';
	200
	201	va_start(args, s);
	202	r = vsnprintf(buffer, 5, s, args);
	203	va_end(args);
	204
	205	/* -1 is pre-C99, 7 is C99. R.W. 17.01.2003 disallow -1 */
	206
	207	if (r != 7)
	208	exit(1);
	209
	210	/* We deliberately do not care if the result is NUL-terminated or
	211	not, since this is easy to work around like this. */
	212
	213	buffer[4] = 0;
	214
	215	/* Simple sanity check. */
	216
	217	if (strcmp(buffer, "1234"))
	218	exit(1);
	219
	220	if (buffer[5] != 'X')
	221	exit(1);
	222
	223	exit(0);
	224	}
	225
	226	int
	227	main(void)
	228	{
	229	doit("1234567");
	230	exit(1);
	231	}], ac_cv_func_vsnprintf=yes, ac_cv_func_vsnprintf=no, ac_cv_func_vsnprintf=no)])
	232	dnl Note that the default is to be pessimistic in the case
	233	dnl of cross compilation.
	234	dnl If you know that the target has a sensible vsnprintf(),
	235	dnl you can get around this
	236	dnl by setting ac_func_vsnprintf to yes, as described in the Autoconf manual.
	237	if test $ac_cv_func_vsnprintf = yes; then
	238	:
	239	else
	240	AC_DEFINE(HAVE_BROKEN_VSNPRINTF, 1,
	241	[Define if you have a broken version of the `vsnprintf' function.])
	242	fi
	243	])# AC_FUNC_VSNPRINTF
	244
	245	dnl SH_CHECK_TYPEDEF(TYPE, HAVE_NAME)
	246	dnl Check whether a typedef exists and create a #define $2 if it exists
	247	dnl
	248	AC_DEFUN([SH_CHECK_TYPEDEF],
	249	[ AC_MSG_CHECKING(for $1 typedef)
	250	sh_cv_typedef_foo=`echo sh_cv_typedef_$1 \| sed -e 's% %_%g'`
	251	AC_CACHE_VAL( $sh_cv_typedef_foo,
	252	[AC_TRY_COMPILE([#include <stdlib.h>
	253	#include <sys/types.h>], [
	254	#undef $1
	255	int a = sizeof($1);
	256	], sh_cv_typedef=yes, sh_cv_typedef=no )])
	257	AC_MSG_RESULT($sh_cv_typedef)
	258	if test "$sh_cv_typedef" = yes; then
	259	AC_DEFINE($2)
	260	sh_$2=yes
	261	else
	262	sh_$2=no
	263	fi
	264	])
	265
	266
	267
	268	dnl **********************
	269	dnl * va_copy checks *
	270	dnl **********************
	271	AC_DEFUN([SL_CHECK_VA_COPY],
	272	[AC_MSG_CHECKING(for va_copy())
	273	AC_CACHE_VAL(sh_cv_va_copy,[
	274	AC_TRY_RUN([
	275	#include <stdarg.h>
	276	void f (int i, ...) {
	277	va_list args1, args2;
	278	va_start (args1, i);
	279	va_copy (args2, args1);
	280	if (va_arg (args2, int) != 42)
	281	exit (1);
	282	if (va_arg (args1, int) != 42)
	283	exit (1);
	284	va_end (args1); va_end (args2);
	285	}
	286	int main() {
	287	f (0, 42);
	288	return 0;
	289	}],
	290	sh_cv_va_copy=yes
	291	,
	292	sh_cv_va_copy=no
	293	,
	294	sh_cv_va_copy=no)
	295	])
	296	AC_MSG_RESULT($sh_cv_va_copy)
	297	AC_MSG_CHECKING(for __va_copy())
	298	AC_CACHE_VAL(sh_cv___va_copy,[
	299	AC_TRY_RUN([
	300	#include <stdarg.h>
	301	void f (int i, ...) {
	302	va_list args1, args2;
	303	va_start (args1, i);
	304	__va_copy (args2, args1);
	305	if (va_arg (args2, int) != 42)
	306	exit (1);
	307	if (va_arg (args1, int) != 42)
	308	exit (1);
	309	va_end (args1); va_end (args2);
	310	}
	311	int main() {
	312	f (0, 42);
	313	return 0;
	314	}],
	315	sh_cv___va_copy=yes
	316	,
	317	sh_cv___va_copy=no
	318	,
	319	sh_cv___va_copy=no)
	320	])
	321	AC_MSG_RESULT($sh_cv___va_copy)
	322	AC_MSG_CHECKING(whether va_lists can be copied by value)
	323	AC_CACHE_VAL(sh_cv_va_val_copy,[
	324	AC_TRY_RUN([
	325	#include <stdarg.h>
	326	void f (int i, ...) {
	327	va_list args1, args2;
	328	va_start (args1, i);
	329	args2 = args1;
	330	if (va_arg (args2, int) != 42)
	331	exit (1);
	332	if (va_arg (args1, int) != 42)
	333	exit (1);
	334	va_end (args1); va_end (args2);
	335	}
	336	int main() {
	337	f (0, 42);
	338	return 0;
	339	}],
	340	sh_cv_va_val_copy=yes
	341	,
	342	sh_cv_va_val_copy=no
	343	,
	344	sh_cv_va_val_copy=no)
	345	])
	346	if test "x$sh_cv_va_copy" = "xyes"; then
	347	AC_DEFINE(VA_COPY, va_copy)
	348	else if test "x$sh_cv___va_copy" = "xyes"; then
	349	AC_DEFINE(VA_COPY, __va_copy)
	350	fi
	351	fi
	352	if test "x$sh_cv_va_val_copy" = "xno"; then
	353	AC_DEFINE(VA_COPY_AS_ARRAY)
	354	fi
	355	AC_MSG_RESULT($sh_cv_va_val_copy)
	356	])
	357
	358
	359	dnl SH_INIT_PARSE_ARGS()
	360	m4_define([SH_INIT_PARSE_ARGS],
	361	[
	362	m4_divert_push([PARSE_ARGS])dnl
	363
	364	as_cr_letters='abcdefghijklmnopqrstuvwxyz'
	365	as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
	366	as_cr_Letters=$as_cr_letters$as_cr_LETTERS
	367	as_cr_digits='0123456789'
	368	as_cr_alnum=$as_cr_Letters$as_cr_digits
	369
	370	# Sed expression to map a string onto a valid CPP name.
	371	as_tr_cpp="sed y%*$as_cr_letters%P$as_cr_LETTERS%;s%[[^_$as_cr_alnum]]%_%g"
	372
	373	as_tr_sh="eval sed 'y%*+%pp%;s%[[^_$as_cr_alnum]]%_%g'"
	374	# IFS
	375	# We need space, tab and new line, in precisely that order.
	376	as_nl='
	377	'
	378	IFS=" $as_nl"
	379
	380	# CDPATH.
	381	$as_unset CDPATH \|\| test "${CDPATH+set}" != set \|\| { CDPATH=$PATH_SEPARATOR; export CDPATH; }
	382
	383
	384	# Initialize some variables set by options.
	385	ac_init_help=
	386	ac_init_version=false
	387	# The variables have the same names as the options, with
	388	# dashes changed to underlines.
	389	cache_file=/dev/null
	390	AC_SUBST(exec_prefix, NONE)dnl
	391	no_create=
	392	no_recursion=
	393	AC_SUBST(prefix, NONE)dnl
	394	program_prefix=NONE
	395	program_suffix=NONE
	396	AC_SUBST(program_transform_name, [s,x,x,])dnl
	397	silent=
	398	site=
	399	srcdir=
	400	verbose=
	401	x_includes=NONE
	402	x_libraries=NONE
	403	DESTDIR=
[68]	404	SH_ENABLE_OPTS="db-reload xml-log message-queue login-watch process-check port-check mounts-check userfiles debug ptrace static network udp nocl stealth micro-stealth install-name identity khide suidcheck base largefile mail external-scripts encrypt srp"
[1]	405	SH_WITH_OPTS="prelude libprelude-prefix database libwrap cflags libs console altconsole timeserver alttimeserver rnd egd-socket port logserver altlogserver kcheck gpg checksum fp recipient sender trusted tmp-dir config-file log-file pid-file state-dir data-file html-file"
	406
	407	# Installation directory options.
	408	# These are left unexpanded so users can "make install exec_prefix=/foo"
	409	# and all the variables that are supposed to be based on exec_prefix
	410	# by default will actually change.
	411	dnl Use braces instead of parens because sh, perl, etc. also accept them.
	412	sbindir='${exec_prefix}/sbin'
	413	sysconfdir='${prefix}/etc'
	414	localstatedir='${prefix}/var'
	415	mandir='${prefix}/share/man'
	416
	417	AC_SUBST([sbindir], ['${exec_prefix}/sbin'])dnl
	418	AC_SUBST([sysconfdir], ['${prefix}/etc'])dnl
	419	AC_SUBST([localstatedir], ['${prefix}/var'])dnl
	420	AC_SUBST([mandir], ['${prefix}/share/man'])dnl
	421
	422
	423	# Initialize some other variables.
	424	subdirs=
	425	MFLAGS= MAKEFLAGS=
	426	SHELL=${CONFIG_SHELL-/bin/sh}
	427	# Maximum number of lines to put in a shell here document.
	428	ac_max_here_lines=12
	429
	430	ac_prev=
	431	for ac_option
	432	do
	433
	434	# If the previous option needs an argument, assign it.
	435	if test -n "$ac_prev"; then
	436	eval "$ac_prev=\$ac_option"
	437	ac_prev=
	438	continue
	439	fi
	440
	441	case "$ac_option" in
	442	changequote(, )dnl
	443	=) ac_optarg=`echo "$ac_option" \| sed 's/[-_a-zA-Z0-9]*=//'` ;;
	444	changequote([, ])dnl
	445	*) ac_optarg= ;;
	446	esac
	447
	448	# Accept the important Cygnus configure options, so we can diagnose typos.
	449
	450	case "$ac_option" in
	451
	452	-build \| --build \| --buil \| --bui \| --bu)
	453	ac_prev=build_alias ;;
	454	-build=* \| --build=* \| --buil=* \| --bui=* \| --bu=*)
	455	build_alias="$ac_optarg" ;;
	456
	457	-cache-file \| --cache-file \| --cache-fil \| --cache-fi \
	458	\| --cache-f \| --cache- \| --cache \| --cach \| --cac \| --ca \| --c)
	459	ac_prev=cache_file ;;
	460	-cache-file=* \| --cache-file=* \| --cache-fil=* \| --cache-fi=* \
	461	\| --cache-f=* \| --cache-=* \| --cache=* \| --cach=* \| --cac=* \| --ca=* \| --c=*)
	462	cache_file="$ac_optarg" ;;
	463
	464	--config-cache \| -C)
	465	cache_file=config.cache ;;
	466
	467	-disable-* \| --disable-*)
	468	ac_feature=`expr "x$ac_option" : 'x-disable-\(.\)'`
	469	# Reject names that are not valid shell variable names.
	470	expr "x$ac_feature" : "[.*[^-_$as_cr_alnum]]" >/dev/null &&
	471	AC_MSG_ERROR([invalid feature name: $ac_feature])
	472	ac_feature=`echo $ac_feature \| sed 's/-/_/g'`
	473	ac_enable_check_opt=no
	474	for f in ${SH_ENABLE_OPTS}
	475	do
	476	f=`echo $f \| sed 's/-/_/g'`
	477	if test x${f} = x"${ac_feature}"
	478	then
	479	ac_enable_check_opt=yes
	480	fi
	481	done
	482	if test x${ac_enable_check_opt} = xno
	483	then
	484	AC_MSG_ERROR([unrecognized option: $ac_option
	485	Try `$[0] --help' for more information.])
	486	fi
	487	eval "enable_$ac_feature=no" ;;
	488
	489	-enable-* \| --enable-*)
	490	ac_feature=`expr "x$ac_option" : 'x-enable-\([[^=]]\)'`
	491	# Reject names that are not valid shell variable names.
	492	expr "x$ac_feature" : "[.*[^-_$as_cr_alnum]]" >/dev/null &&
	493	AC_MSG_ERROR([invalid feature name: $ac_feature])
	494	ac_feature=`echo $ac_feature \| sed 's/-/_/g'`
	495	case $ac_option in
	496	=) ac_optarg=`echo "$ac_optarg" \| sed "s/'/'\\\\\\\\''/g"`;;
	497	*) ac_optarg=yes ;;
	498	esac
	499	ac_enable_check_opt=no
	500	for f in ${SH_ENABLE_OPTS}
	501	do
	502	f=`echo $f \| sed 's/-/_/g'`
	503	if test x${f} = x"${ac_feature}"
	504	then
	505	ac_enable_check_opt=yes
	506	fi
	507	done
	508	if test x${ac_enable_check_opt} = xno
	509	then
	510	AC_MSG_ERROR([unrecognized option: $ac_option
	511	Try `$[0] --help' for more information.])
	512	fi
	513	eval "enable_$ac_feature='$ac_optarg'" ;;
	514
	515	-exec-prefix \| --exec_prefix \| --exec-prefix \| --exec-prefi \
	516	\| --exec-pref \| --exec-pre \| --exec-pr \| --exec-p \| --exec- \
	517	\| --exec \| --exe \| --ex)
	518	ac_prev=exec_prefix
	519	ac_exec_prefix_set="yes"
	520	;;
	521	-exec-prefix=* \| --exec_prefix=* \| --exec-prefix=* \| --exec-prefi=* \
	522	\| --exec-pref=* \| --exec-pre=* \| --exec-pr=* \| --exec-p=* \| --exec-=* \
	523	\| --exec=* \| --exe=* \| --ex=*)
	524	exec_prefix="$ac_optarg"
	525	ac_exec_prefix_set="yes"
	526	;;
	527
	528	-gas \| --gas \| --ga \| --g)
	529	# Obsolete; use --with-gas.
	530	with_gas=yes ;;
	531
	532	-help \| --help \| --hel \| --he \| -h)
	533	ac_init_help=long ;;
	534	-help=r* \| --help=r* \| --hel=r* \| --he=r* \| -hr*)
	535	ac_init_help=recursive ;;
	536	-help=s* \| --help=s* \| --hel=s* \| --he=s* \| -hs*)
	537	ac_init_help=short ;;
	538
	539	-host \| --host \| --hos \| --ho)
	540	ac_prev=host_alias ;;
	541	-host=* \| --host=* \| --hos=* \| --ho=*)
	542	host_alias="$ac_optarg" ;;
	543
	544	-localstatedir \| --localstatedir \| --localstatedi \| --localstated \
	545	\| --localstate \| --localstat \| --localsta \| --localst \
	546	\| --locals \| --local \| --loca \| --loc \| --lo)
	547	ac_prev=localstatedir
	548	ac_localstatedir_set="yes"
	549	;;
	550	-localstatedir=* \| --localstatedir=* \| --localstatedi=* \| --localstated=* \
	551	\| --localstate=* \| --localstat=* \| --localsta=* \| --localst=* \
	552	\| --locals=* \| --local=* \| --loca=* \| --loc=* \| --lo=*)
	553	localstatedir="$ac_optarg"
	554	ac_localstatedir_set="yes"
	555	;;
	556
	557	-mandir \| --mandir \| --mandi \| --mand \| --man \| --ma \| --m)
	558	ac_prev=mandir
	559	ac_mandir_set="yes"
	560	;;
	561	-mandir=* \| --mandir=* \| --mandi=* \| --mand=* \| --man=* \| --ma=* \| --m=*)
	562	mandir="$ac_optarg"
	563	ac_mandir_set="yes"
	564	;;
	565
	566	-nfp \| --nfp \| --nf)
	567	# Obsolete; use --without-fp.
	568	with_fp=no ;;
	569
	570	-no-create \| --no-create \| --no-creat \| --no-crea \| --no-cre \
	571	\| --no-cr \| --no-c \| -n)
	572	no_create=yes ;;
	573
	574	-no-recursion \| --no-recursion \| --no-recursio \| --no-recursi \
	575	\| --no-recurs \| --no-recur \| --no-recu \| --no-rec \| --no-re \| --no-r)
	576	no_recursion=yes ;;
	577
	578	-prefix \| --prefix \| --prefi \| --pref \| --pre \| --pr \| --p)
	579	ac_prev=prefix
	580	ac_prefix_set="yes"
	581	;;
	582	-prefix=* \| --prefix=* \| --prefi=* \| --pref=* \| --pre=* \| --pr=* \| --p=*)
	583	prefix="$ac_optarg"
	584	ac_prefix_set="yes"
	585	;;
	586
	587	-q \| -quiet \| --quiet \| --quie \| --qui \| --qu \| --q \
	588	\| -silent \| --silent \| --silen \| --sile \| --sil)
	589	silent=yes ;;
	590
	591	-sbindir \| --sbindir \| --sbindi \| --sbind \| --sbin \| --sbi \| --sb)
	592	ac_prev=sbindir
	593	ac_sbindir_set="yes"
	594	;;
	595	-sbindir=* \| --sbindir=* \| --sbindi=* \| --sbind=* \| --sbin=* \
	596	\| --sbi=* \| --sb=*)
	597	sbindir="$ac_optarg"
	598	ac_sbindir_set="yes"
	599	;;
	600
	601	-bindir \| --bindir \| --bindi \| --bind \| --bin \| --bi \| --b)
	602	echo "WARNING: bindir will be ignored, use sbindir"
	603	;;
	604	-bindir=* \| --bindir=* \| --bindi=* \| --bind=* \| --bin=* \
	605	\| --bi=* \| --b=*)
	606	echo "WARNING: bindir will be ignored, use sbindir"
	607	;;
	608
	609	-datadir \| --datadir)
	610	echo "WARNING: datadir will be ignored"
	611	;;
	612	-datadir=* \| --datadir=*)
	613	echo "WARNING: datadir will be ignored"
	614	;;
	615
	616	-includedir \| --includedir)
	617	echo "WARNING: includedir will be ignored"
	618	;;
	619	-includedir=* \| --includedir=*)
	620	echo "WARNING: includedir will be ignored"
	621	;;
	622
	623	-infodir \| --infodir)
	624	echo "WARNING: infodir will be ignored"
	625	;;
	626	-infodir=* \| --infodir=*)
	627	echo "WARNING: infodir will be ignored"
	628	;;
	629
	630	-libdir \| --libdir)
	631	echo "WARNING: libdir will be ignored"
	632	;;
	633	-libdir=* \| --libdir=*)
	634	echo "WARNING: libdir will be ignored"
	635	;;
	636
	637	-libexecdir \| --libexecdir)
	638	echo "WARNING: libexecdir will be ignored"
	639	;;
	640	-libexecdir=* \| --libexecdir=*)
	641	echo "WARNING: libexecdir will be ignored"
	642	;;
	643
	644	-sharedstatedir \| --sharedstatedir)
	645	echo "WARNING: sharedstatedir will be ignored"
	646	;;
	647	-sharedstatedir=* \| --sharedstatedir=*)
	648	echo "WARNING: sharedstatedir will be ignored"
	649	;;
	650
	651	-site \| --site \| --sit)
	652	ac_prev=site ;;
	653	-site=* \| --site=* \| --sit=*)
	654	site="$ac_optarg" ;;
	655
	656	-srcdir \| --srcdir \| --srcdi \| --srcd \| --src \| --sr)
	657	ac_prev=srcdir ;;
	658	-srcdir=* \| --srcdir=* \| --srcdi=* \| --srcd=* \| --src=* \| --sr=*)
	659	srcdir="$ac_optarg" ;;
	660
	661	-sysconfdir \| --sysconfdir \| --sysconfdi \| --sysconfd \| --sysconf \
	662	\| --syscon \| --sysco \| --sysc \| --sys \| --sy)
	663	ac_prev=sysconfdir
	664	ac_sysconfdir_set="yes"
	665	;;
	666	-sysconfdir=* \| --sysconfdir=* \| --sysconfdi=* \| --sysconfd=* \| --sysconf=* \
	667	\| --syscon=* \| --sysco=* \| --sysc=* \| --sys=* \| --sy=*)
	668	sysconfdir="$ac_optarg"
	669	ac_sysconfdir_set="yes"
	670	;;
	671
	672	-target \| --target \| --targe \| --targ \| --tar \| --ta \| --t)
	673	ac_prev=target_alias ;;
	674	-target=* \| --target=* \| --targe=* \| --targ=* \| --tar=* \| --ta=* \| --t=*)
	675	target_alias="$ac_optarg" ;;
	676
	677	-v \| -verbose \| --verbose \| --verbos \| --verbo \| --verb)
	678	verbose=yes ;;
	679
	680	-version \| --version \| --versio \| --versi \| --vers)
	681	ac_init_version=: ;;
	682
	683
	684	-with-* \| --with-*)
	685	ac_package=`expr "x$ac_option" : 'x-with-\([[^=]]\)'`
	686	# Reject names that are not valid shell variable names.
	687	expr "x$ac_package" : "[.*[^-_$as_cr_alnum]]" >/dev/null &&
	688	AC_MSG_ERROR([invalid package name: $ac_package])
	689	ac_package=`echo $ac_package\| sed 's/-/_/g'`
	690	case $ac_option in
	691	=) ac_optarg=`echo "$ac_optarg" \| sed "s/'/'\\\\\\\\''/g"`;;
	692	*) ac_optarg=yes ;;
	693	esac
	694	ac_with_check_opt=no
	695	for f in ${SH_WITH_OPTS}
	696	do
	697	f=`echo $f \| sed 's/-/_/g'`
	698	if test x${f} = x"${ac_package}"
	699	then
	700	ac_with_check_opt=yes
	701	fi
	702	done
	703	if test x${ac_with_check_opt} = xno
	704	then
	705	AC_MSG_ERROR([unrecognized option: $ac_option
	706	Try `$[0] --help' for more information.])
	707	fi
	708	eval "with_$ac_package='$ac_optarg'" ;;
	709
	710	-without-* \| --without-*)
	711	ac_package=`expr "x$ac_option" : 'x-without-\(.\)'`
	712	# Reject names that are not valid shell variable names.
	713	expr "x$ac_package" : "[.*[^-_$as_cr_alnum]]" >/dev/null &&
	714	AC_MSG_ERROR([invalid package name: $ac_package])
	715	ac_package=`echo $ac_package \| sed 's/-/_/g'`
	716	ac_with_check_opt=no
	717	for f in ${SH_WITH_OPTS}
	718	do
	719	f=`echo $f \| sed 's/-/_/g'`
	720	if test x${f} = x"${ac_package}"
	721	then
	722	ac_with_check_opt=yes
	723	fi
	724	done
	725	if test x${ac_with_check_opt} = xno
	726	then
	727	AC_MSG_ERROR([unrecognized option: $ac_option
	728	Try `$[0] --help' for more information.])
	729	fi
	730	eval "with_$ac_package=no" ;;
	731
	732
	733	-*) AC_MSG_ERROR([unrecognized option: $ac_option
	734	Try `$[0] --help' for more information.])
	735	;;
	736
	737	=)
	738	ac_envvar=`expr "x$ac_option" : 'x\([[^=]]*\)='`
	739	# Reject names that are not valid shell variable names.
	740	expr "x$ac_envvar" : "[.*[^_$as_cr_alnum]]" >/dev/null &&
	741	AC_MSG_ERROR([invalid variable name: $ac_envvar])
	742	ac_optarg=`echo "$ac_optarg" \| sed "s/'/'\\\\\\\\''/g"`
	743	eval "$ac_envvar='$ac_optarg'"
	744	export $ac_envvar ;;
	745
	746	*)
	747	# FIXME: should be removed in autoconf 3.0.
	748	AC_MSG_WARN([you should use --build, --host, --target])
	749	expr "x$ac_option" : "[.*[^-._$as_cr_alnum]]" >/dev/null &&
	750	AC_MSG_WARN([invalid host type: $ac_option])
	751	: ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
	752	;;
	753
	754
	755	esac
	756	done
	757
	758	if test -n "$ac_prev"; then
	759	AC_MSG_ERROR(missing argument to --`echo $ac_prev \| sed 's/_/-/g'`)
	760	fi
	761
	762	# Be sure to have absolute paths.
	763	for ac_var in prefix exec_prefix
	764	do
	765	eval ac_val=$`echo $ac_var`
	766	case $ac_val in
	767	[[\\/$]]* \| ?:[[\\/]]* \| NONE \| '' \| OPT \| USR ) ;;
	768	*) AC_MSG_ERROR([expected an absolute directory name for --$ac_var: $ac_val]);;
	769	esac
	770	done
	771
	772	# Be sure to have absolute paths.
	773	for ac_var in sbindir sysconfdir localstatedir mandir
	774	do
	775	eval ac_val=$`echo $ac_var`
	776	case $ac_val in
	777	[[\\/$]]* \| ?:[[\\/]]* ) ;;
	778	*) AC_MSG_ERROR([expected an absolute directory name for --$ac_var: $ac_val]);;
	779	esac
	780	done
	781
	782	# There might be people who depend on the old broken behavior: `$host'
	783	# used to hold the argument of --host etc.
	784	# FIXME: To remove some day.
	785	build=$build_alias
	786	host=$host_alias
	787	target=$target_alias
	788
	789	# FIXME: To remove some day.
	790	if test "x$host_alias" != x; then
	791	if test "x$build_alias" = x; then
	792	cross_compiling=maybe
	793	AC_MSG_WARN([If you wanted to set the --build type, don't use --host.
	794	If a cross compiler is detected then cross compile mode will be used.])
	795	elif test "x$build_alias" != "x$host_alias"; then
	796	cross_compiling=yes
	797	fi
	798	fi
	799
	800	ac_tool_prefix=
	801	test -n "$host_alias" && ac_tool_prefix=$host_alias-
	802
	803	test "$silent" = yes && exec AS_MESSAGE_FD>/dev/null
	804
	805	m4_divert_pop([PARSE_ARGS])dnl
	806	])# SH_INIT_PARSE_ARGS
	807
	808	m4_define([SH_INIT_HELP],
	809	[m4_divert_push([HELP_BEGIN])dnl
	810
	811	#
	812	# Report the --help message.
	813	#
	814	if test "$ac_init_help" = "long"; then
	815	# Omit some internal or obsolete options to make the list less imposing.
	816	# This message is too long to be a string in the A/UX 3.1 sh.
	817	cat <<_ACEOF
	818	\`configure' configures m4_ifset([AC_PACKAGE_STRING],
	819	[AC_PACKAGE_STRING],
	820	[this package]) to adapt to many kinds of systems.
	821
	822	Usage: $[0] [[OPTION]]... [[VAR=VALUE]]...
	823
	824	[To assign environment variables (e.g., CC, CFLAGS...), specify them as
	825	VAR=VALUE. See below for descriptions of some of the useful variables.
	826
	827	Defaults for the options are specified in brackets.
	828
	829	Configuration:
	830	-h, --help display this help and exit
	831	--help=short display options specific to this package
	832	--help=recursive display the short help of all the included packages
	833	-V, --version display version information and exit
	834	-q, --quiet, --silent do not print \`checking...' messages
	835	--cache-file=FILE cache test results in FILE [disabled]
	836	-C, --config-cache alias for \`--cache-file=config.cache'
	837	-n, --no-create do not create output files
	838	--srcdir=DIR find the sources in DIR [configure dir or \`..']
	839
	840	_ACEOF
	841
	842	cat <<_ACEOF
	843	Installation directories:
	844	--prefix=PREFIX install architecture-independent files in PREFIX
	845	[$ac_default_prefix]
	846	--exec-prefix=EPREFIX install architecture-dependent files in EPREFIX
	847	[PREFIX]
	848
	849	By default, \`make install' will install binaries in \`/usr/local/sbin',
	850	the config file in \`/etc', manpage in \`/usr/local/share/man', and state
	851	data in \`/var/lib/INSTALL_NAME' (FSH layout). You can specify other
	852	FSH compliant layouts with \`--prefix=OPT' or \`--prefix=USR', or you
	853	can specify a directory with \`--prefix=DIR' to install in \`DIR/sbin',
	854	\`DIR/etc', etc.
	855
	856	For better control, use the options below.
	857
	858	Fine tuning of the installation directories:
	859	--sbindir=DIR system admin executables [EPREFIX/sbin]
	860	--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
	861	--localstatedir=DIR modifiable single-machine data [PREFIX/var]
	862	--mandir=DIR man documentation [PREFIX/man]
	863
	864	For even finer tuning, paths can be specified for individual files (see below)
	865
	866	_ACEOF
	867
	868	cat <<\_ACEOF]
	869	m4_divert_pop([HELP_BEGIN])dnl
	870	dnl The order of the diversions here is
	871	dnl - HELP_BEGIN
	872	dnl which may be prolongated by extra generic options such as with X or
	873	dnl AC_ARG_PROGRAM. Displayed only in long --help.
	874	dnl
	875	dnl - HELP_CANON
	876	dnl Support for cross compilation (--build, --host and --target).
	877	dnl Display only in long --help.
	878	dnl
	879	dnl - HELP_ENABLE
	880	dnl which starts with the trailer of the HELP_BEGIN, HELP_CANON section,
	881	dnl then implements the header of the non generic options.
	882	dnl
	883	dnl - HELP_WITH
	884	dnl
	885	dnl - HELP_VAR
	886	dnl
	887	dnl - HELP_VAR_END
	888	dnl
	889	dnl - HELP_END
	890	dnl initialized below, in which we dump the trailer (handling of the
	891	dnl recursion for instance).
	892	m4_divert_push([HELP_ENABLE])dnl
	893	_ACEOF
	894	fi
	895
	896	if test -n "$ac_init_help"; then
	897	m4_ifset([AC_PACKAGE_STRING],
	898	[ case $ac_init_help in
	899	short \| recursive ) echo "Configuration of AC_PACKAGE_STRING:";;
	900	esac])
	901	cat <<\_ACEOF
	902	m4_divert_pop([HELP_ENABLE])dnl
	903	m4_divert_push([HELP_END])dnl
	904	m4_ifset([AC_PACKAGE_BUGREPORT], [
	905	Report bugs to <AC_PACKAGE_BUGREPORT>.])
	906	_ACEOF
	907	fi
	908
	909	if test "$ac_init_help" = "recursive"; then
	910	# If there are subdirs, report their specific --help.
	911	ac_popdir=`pwd`
	912	for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
	913	test -d $ac_dir \|\| continue
	914	_AC_SRCPATHS(["$ac_dir"])
	915	cd $ac_dir
	916	# Check for guested configure; otherwise get Cygnus style configure.
	917	if test -f $ac_srcdir/configure.gnu; then
	918	echo
	919	$SHELL $ac_srcdir/configure.gnu --help=recursive
	920	elif test -f $ac_srcdir/configure; then
	921	echo
	922	$SHELL $ac_srcdir/configure --help=recursive
	923	elif test -f $ac_srcdir/configure.ac \|\|
	924	test -f $ac_srcdir/configure.in; then
	925	echo
	926	$ac_configure --help
	927	else
	928	AC_MSG_WARN([no configuration information is in $ac_dir])
	929	fi
	930	cd $ac_popdir
	931	done
	932	fi
	933
	934	test -n "$ac_init_help" && exit 0
	935	m4_divert_pop([HELP_END])dnl
	936	])# SH_INIT_HELP
	937
	938
	939
	940
	941
	942
	943
	944
	945	# Check whether sa_sigaction works.
	946	# Rainer Wichmann <support@la-samhna.de>, 2003.
	947	#
	948	# This file can be copied and used freely without restrictions. It can
	949	# be used in projects which are not available under the GNU Public License.
	950
	951	# serial 1
	952
	953	AC_DEFUN([AM_SA_SIGACTION_WORKS],
	954	[
	955	am_cv_val_SA_SIGACTION=no
	956	AC_CHECK_HEADER(signal.h,
	957	[
	958	AM_SI_USER
	959	AM_SA_SIGINFO
	960	if test $am_cv_val_SI_USER = yes && test $am_cv_val_SA_SIGINFO = yes
	961	then
	962	AC_TRY_RUN([
	963	#include <signal.h>
	964	#include <setjmp.h>
	965	#include <stdio.h>
	966	#include <stdlib.h>
	967
	968	volatile int xnum = 0;
	969	volatile int xcode = 0;
	970	jmp_buf Buf;
	971	int xsig = SIGSEGV;
	972
	973	void sighandler (int xsignam, siginfo_t * xsiginfo, void * xsigadd)
	974	{
	975	static sigset_t x;
	976
	977	if (xsiginfo == NULL)
	978	exit(__LINE__);
	979	if (xsiginfo->si_signo != xsignam)
	980	exit(__LINE__);
	981	++xnum;
	982	xcode = xsiginfo->si_code;
	983	sigemptyset (&x);
	984	sigprocmask(SIG_SETMASK, &x, NULL);
	985	longjmp ( Buf, 1);
	986	}
	987
	988	int main ()
	989	{
	990	struct sigaction newact;
	991
	992	newact.sa_sigaction = sighandler;
	993	sigemptyset (&newact.sa_mask);
	994	newact.sa_flags = SA_SIGINFO;
	995	if (0 != sigaction (xsig, &newact, NULL))
	996	exit (__LINE__);
	997	if(setjmp ( Buf)) {
	998	if (xnum > 1)
	999	goto Third;
	1000	goto Second;
	1001	}
	1002	memcpy((void *) 0x0, "test", 5);
	1003	Second:
	1004	if (xcode == SI_USER)
	1005	exit (__LINE__);
	1006	raise(xsig);
	1007	Third:
	1008	if (xcode != SI_USER)
	1009	exit (__LINE__);
	1010	if (xnum != 2)
	1011	exit (__LINE__);
	1012	return (0);
	1013	}], am_cv_val_SA_SIGACTION=yes, am_cv_val_SA_SIGACTION=no, am_cv_val_SA_SIGACTION=no)
	1014	fi
	1015	])
	1016	AC_MSG_CHECKING([whether sa_sigaction is supported])
	1017	if test $am_cv_val_SA_SIGACTION = yes
	1018	then
	1019	AC_MSG_RESULT(yes)
	1020	AC_DEFINE([SA_SIGACTION_WORKS], 1, [Define if sa_sigaction works])
	1021	else
	1022	AC_MSG_RESULT(no)
	1023	fi
	1024	])
	1025
	1026	# Check whether SI_USER is available in <signal.h>.
	1027	# Rainer Wichmann <support@la-samhna.de>, 2003.
	1028	#
	1029	# This file can be copied and used freely without restrictions. It can
	1030	# be used in projects which are not available under the GNU Public License.
	1031
	1032	# serial 1
	1033
	1034
	1035	AC_DEFUN([AM_SI_USER],
	1036	[if test $ac_cv_header_signal_h = yes; then
	1037	AC_CACHE_CHECK([for SI_USER in signal.h], am_cv_val_SI_USER,
	1038	[AC_TRY_LINK([#include <signal.h>], [return SI_USER],
	1039	am_cv_val_SI_USER=yes, am_cv_val_SI_USER=no)])
	1040	if test $am_cv_val_SI_USER = yes; then
	1041	AC_DEFINE([HAVE_SI_USER], 1, [Define if you have SI_USER])
	1042	fi
	1043	fi])
	1044
	1045	# Check whether SA_SIGINFO is available in <signal.h>.
	1046	# Rainer Wichmann <support@la-samhna.de>, 2003.
	1047	#
	1048	# This file can be copied and used freely without restrictions. It can
	1049	# be used in projects which are not available under the GNU Public License.
	1050
	1051	# serial 1
	1052
	1053
	1054	AC_DEFUN([AM_SA_SIGINFO],
	1055	[if test $ac_cv_header_signal_h = yes; then
	1056	AC_CACHE_CHECK([for SA_SIGINFO in signal.h], am_cv_val_SA_SIGINFO,
	1057	[AC_TRY_LINK([#include <signal.h>], [return SA_SIGINFO],
	1058	am_cv_val_SA_SIGINFO=yes, am_cv_val_SA_SIGINFO=no)])
	1059	if test $am_cv_val_SA_SIGINFO = yes; then
	1060	AC_DEFINE([HAVE_SA_SIGINFO], 1, [Define if you have SA_SIGINFO])
	1061	fi
	1062	fi])
	1063
	1064	dnl
	1065	dnl Useful macros for autoconf to check for ssp-patched gcc
	1066	dnl 1.0 - September 2003 - Tiago Sousa <mirage@kaotik.org>
[120]	1067	dnl 1.1 - August 2006 - Ted Percival <ted@midg3t.net>
	1068	dnl * Stricter language checking (C or C++)
	1069	dnl * Adds GCC_STACK_PROTECT_LIB to add -lssp to LDFLAGS as necessary
	1070	dnl * Caches all results
	1071	dnl * Uses macros to ensure correct ouput in quiet/silent mode
	1072	dnl 1.2 - April 2007 - Ted Percival <ted@midg3t.net>
	1073	dnl * Added GCC_STACK_PROTECTOR macro for simpler (one-line) invocation
	1074	dnl * GCC_STACK_PROTECT_LIB now adds -lssp to LIBS rather than LDFLAGS
[1]	1075	dnl
	1076	dnl About ssp:
	1077	dnl GCC extension for protecting applications from stack-smashing attacks
	1078	dnl http://www.research.ibm.com/trl/projects/security/ssp/
	1079	dnl
	1080	dnl Usage:
[120]	1081	dnl Most people will simply call GCC_STACK_PROTECTOR.
	1082	dnl If you only use one of C or C++, you can save time by only calling the
	1083	dnl macro appropriate for that language. In that case you should also call
	1084	dnl GCC_STACK_PROTECT_LIB first.
[1]	1085	dnl
[120]	1086	dnl GCC_STACK_PROTECTOR
	1087	dnl Tries to turn on stack protection for C and C++ by calling the following
	1088	dnl three macros with the right languages.
	1089	dnl
[1]	1090	dnl GCC_STACK_PROTECT_CC
	1091	dnl checks -fstack-protector with the C compiler, if it exists then updates
	1092	dnl CFLAGS and defines ENABLE_SSP_CC
	1093	dnl
[120]	1094	dnl GCC_STACK_PROTECT_CXX
	1095	dnl checks -fstack-protector with the C++ compiler, if it exists then updates
	1096	dnl CXXFLAGS and defines ENABLE_SSP_CXX
	1097	dnl
	1098	dnl GCC_STACK_PROTECT_LIB
	1099	dnl adds -lssp to LIBS if it is available
	1100	dnl ssp is usually provided as part of libc, but was previously a separate lib
	1101	dnl It does not hurt to add -lssp even if libc provides SSP - in that case
	1102	dnl libssp will simply be ignored.
	1103	dnl
	1104
	1105	AC_DEFUN([GCC_STACK_PROTECT_LIB],[
	1106	AC_CACHE_CHECK([whether libssp exists], ssp_cv_lib,
	1107	[ssp_old_libs="$LIBS"
	1108	LIBS="$LIBS -lssp"
	1109	AC_TRY_LINK(,, ssp_cv_lib=yes, ssp_cv_lib=no)
	1110	LIBS="$ssp_old_libs"
	1111	])
	1112	if test $ssp_cv_lib = yes; then
	1113	LIBS="$LIBS -lssp"
	1114	fi
	1115	])
	1116
[1]	1117	AC_DEFUN([GCC_STACK_PROTECT_CC],[
[120]	1118	AC_LANG_ASSERT(C)
	1119	if test "X$CC" != "X"; then
	1120	AC_CACHE_CHECK([whether ${CC} accepts -fstack-protector],
	1121	ssp_cv_cc,
	1122	[ssp_old_cflags="$CFLAGS"
	1123	CFLAGS="$CFLAGS -fstack-protector"
	1124	AC_TRY_COMPILE(,, ssp_cv_cc=yes, ssp_cv_cc=no)
	1125	CFLAGS="$ssp_old_cflags"
	1126	])
	1127	if test $ssp_cv_cc = yes; then
	1128	CFLAGS="$CFLAGS -fstack-protector"
[1]	1129	AC_DEFINE([ENABLE_SSP_CC], 1, [Define if SSP C support is enabled.])
	1130	fi
	1131	fi
	1132	])
	1133
[120]	1134	AC_DEFUN([GCC_STACK_PROTECT_CXX],[
	1135	AC_LANG_ASSERT(C++)
	1136	if test "X$CXX" != "X"; then
	1137	AC_CACHE_CHECK([whether ${CXX} accepts -fstack-protector],
	1138	ssp_cv_cxx,
	1139	[ssp_old_cxxflags="$CXXFLAGS"
	1140	CXXFLAGS="$CXXFLAGS -fstack-protector"
	1141	AC_TRY_COMPILE(,, ssp_cv_cxx=yes, ssp_cv_cxx=no)
	1142	CXXFLAGS="$ssp_old_cxxflags"
	1143	])
	1144	if test $ssp_cv_cxx = yes; then
	1145	CXXFLAGS="$CXXFLAGS -fstack-protector"
	1146	AC_DEFINE([ENABLE_SSP_CXX], 1, [Define if SSP C++ support is enabled.])
	1147	fi
	1148	fi
	1149	])
	1150
	1151	AC_DEFUN([GCC_STACK_PROTECTOR],[
	1152	GCC_STACK_PROTECT_LIB
	1153
	1154	AC_LANG_PUSH([C])
	1155	GCC_STACK_PROTECT_CC
	1156	AC_LANG_POP([C])
	1157
	1158	AC_LANG_PUSH([C++])
	1159	GCC_STACK_PROTECT_CXX
	1160	AC_LANG_POP([C++])
	1161	])
	1162
	1163
	1164
[1]	1165	AC_DEFUN([SAMHAIN_POSIX],[
	1166	AC_MSG_CHECKING([whether _POSIX_SOURCE is necessary])
	1167	AC_TRY_COMPILE([#include <stdio.h>
	1168	void fileno(int);int fdopen(int, char *); ],,
	1169	[
	1170	AC_MSG_RESULT(yes)
	1171	AC_DEFINE([_POSIX_SOURCE],1,[Define if POSIX functions are required])
	1172	],
	1173	[AC_MSG_RESULT(no)])
	1174	])dnl
	1175
[18]	1176	dnl checks for a known 64 bit programming environment
	1177	dnl AC_RUN_IFELSE(PROGRAM,
	1178	dnl [ACTION-IF-TRUE], [ACTION-IF-FALSE],
	1179	dnl [ACTION-IF-CROSS-COMPILING = RUNTIME-ERROR])
	1180	dnl
	1181	AC_DEFUN([SAMHAIN_PRG_ENV],[
	1182	AC_MSG_CHECKING([for a known 64 bit programming environment])
	1183	# Compile and run a program that determines the programming environment
	1184	AC_RUN_IFELSE([
	1185	AC_LANG_SOURCE([[
	1186	#include <stdio.h>
	1187	int main(int argc,char **argv)
	1188	{
	1189	if (argc > 1) {
	1190	#if defined(__arch64__)
	1191	printf("__arch64__\n");
	1192	#elif defined(__ia64__)
	1193	printf("__ia64__\n");
	1194	#elif defined(__x86_64__)
	1195	printf("__x86_64__\n");
	1196	#elif defined(__LP64__)
	1197	printf("__LP64__\n");
	1198	#elif defined(__64BIT__)
	1199	printf("__64BIT__\n");
	1200	#elif defined(_LP64)
	1201	printf("_LP64\n");
	1202	#elif defined(_M_IA64)
	1203	printf("_M_IA64\n");
	1204	#elif defined(_MIPS_SZLONG) && (_MIPS_SZLONG == 64)
	1205	printf("_MIPS_64\n");
	1206	#else
	1207	choke me
	1208	#endif
	1209	}
	1210	return 0;
	1211	}
	1212	]])
	1213	],[
	1214	# Program compiled and ran, so get version by adding argument.
	1215	samhain_prg_ENV=`./conftest$ac_exeext x`
	1216	samhain_64=yes
	1217	AC_MSG_RESULT([$samhain_prg_ENV])
	1218	],[
	1219	AC_MSG_RESULT([none])
	1220	],[
	1221	AC_MSG_RESULT([none])
	1222	])
	1223	])dnl
	1224
	1225	AC_DEFUN([SAMHAIN_X86_64],[
	1226	AC_MSG_CHECKING([for x86_64])
	1227	AC_TRY_RUN([
	1228	int main() {
	1229	__asm__ volatile (
	1230	"movq %rax, %rax"
	1231	);
	1232	return 0;
	1233	}
	1234	],
	1235	[
	1236	AC_MSG_RESULT(yes)
	1237	samhain_64=yes
	1238	tiger_src=sh_tiger1_64.c
	1239	AC_DEFINE([TIGER_OPT_ASM],1,[Define to use tiger x86_64 optimized assembly])
	1240	],
	1241	[
	1242	AC_MSG_RESULT([no])
	1243	],[
	1244	AC_MSG_RESULT([no])
	1245	])
	1246	])dnl
	1247
	1248
	1249	AC_DEFUN([SAMHAIN_64],[
	1250	samhain_64=no
	1251	tiger_src=sh_tiger1.c
	1252	#
	1253	# if sizeof(unsigned long) = 4, try compiler macros for 64bit
	1254	#
	1255	if test "x$ac_cv_sizeof_unsigned_long" = x4; then
	1256	if test "x$ac_cv_sizeof_unsigned_long_long" = x8; then
	1257	SAMHAIN_PRG_ENV
	1258	if test "x$samhain_64" = xyes; then
	1259	tiger_src=sh_tiger1_64.c
	1260	fi
	1261	#
	1262	# if GCC and __i386__, use precompiled assembler
	1263	#
	1264	if test "x$GCC" = xyes; then
[61]	1265	AC_MSG_CHECKING([for non-apple non-cygwin i386])
[18]	1266	samhain_i386=no
[47]	1267	$CC -E -dM - < /dev/null \| egrep '__i386__' >/dev/null 2>&1
	1268	if test $? = 0; then
	1269	# apples gcc does not understand the assembly we provide
[64]	1270	$CC -E -dM - < /dev/null \| egrep '(__sun__\|__APPLE__\|__CYGWIN__)' >/dev/null 2>&1 \|\| samhain_i386=yes
[47]	1271	fi
[18]	1272	if test "x$samhain_i386" = xyes; then
	1273	tiger_src=sh_tiger1.s
	1274	AC_DEFINE([TIGER_32_BIT_S],1,[Define to use tiger 32 bit i386 assembler])
	1275	fi
	1276	AC_MSG_RESULT([$samhain_i386])
	1277	fi
	1278	#
	1279	#
	1280	#
	1281	else
	1282	samhain_64=no
	1283	tiger_src=sh_tiger1.c
	1284	fi
	1285	else
	1286	#
	1287	# sizeof(unsigned long) = 8
	1288	#
	1289	tiger_src=sh_tiger1_64.c
	1290	samhain_64=yes
	1291	#
	1292	# check for x86_64 (enables assembly optimizations)
	1293	#
	1294	if test "x$GCC" = xyes; then
	1295	SAMHAIN_X86_64
	1296	fi
	1297	fi
	1298	if test "x$samhain_64" = xyes; then
	1299	AC_DEFINE([TIGER_64_BIT],1,[Define to use tiger 64 bit implementation])
	1300	fi
	1301	AC_MSG_CHECKING([for 64 bit environment])
	1302	AC_MSG_RESULT([$samhain_64])
	1303	AC_MSG_CHECKING([for tiger source to use])
	1304	AC_MSG_RESULT([$tiger_src])
	1305	AC_SUBST(tiger_src)
	1306	])dnl
	1307
[68]	1308	AC_DEFUN([sh_CHECK_POSIX_ACL],
	1309	[
	1310	AC_CHECK_HEADERS(sys/acl.h)
	1311	if test $ac_cv_header_sys_acl_h = yes; then
[18]	1312
[68]	1313	AC_CHECK_LIB([acl], [acl_get_file], sh_lacl=yes, sh_lacl=no)
	1314	if test x"$sh_lacl" = xyes; then
	1315	LIBACL=-lacl
	1316	else
	1317	LIBACL=
	1318	fi
	1319
	1320	OLDLIBS="$LIBS"
	1321	LIBS="$LIBS $LIBACL"
	1322	AC_CHECK_FUNCS([acl_free acl_get_file acl_get_fd],
	1323	[sh_facl=yes],[sh_facl=no])
	1324	LIBS="$OLDLIBS"
	1325
	1326	if test x"$sh_facl" = xyes; then
	1327	AC_DEFINE(USE_ACL, 1, [Define if you want ACL support.])
	1328	LIBS="$LIBS $LIBACL"
	1329	fi
	1330	fi
	1331	])
	1332
	1333	AC_DEFUN([sh_CHECK_XATTR],
	1334	[
	1335	AC_CHECK_HEADERS(attr/xattr.h)
	1336	if test $ac_cv_header_attr_xattr_h = yes; then
	1337
	1338	AC_CHECK_LIB([attr], [getxattr], sh_lattr=yes, sh_lattr=no)
	1339	if test x"$sh_lattr" = xyes; then
	1340	LIBATTR=-lattr
	1341	else
	1342	LIBATTR=
	1343	fi
	1344
	1345	OLDLIBS="$LIBS"
	1346	LIBS="$LIBS $LIBATTR"
	1347	AC_CHECK_FUNCS([getxattr lgetxattr fgetxattr],
	1348	[sh_fattr=yes],[sh_fattr=no])
	1349	LIBS="$OLDLIBS"
	1350
	1351	if test x"$sh_fattr" = xyes; then
	1352	AC_DEFINE(USE_XATTR, 1, [Define if you want extended attributes support.])
	1353	LIBS="$LIBS $LIBATTR"
	1354	fi
	1355	fi
	1356	])
	1357
[1]	1358	dnl Autoconf macros for libprelude
	1359	dnl $id$
	1360
	1361	# Modified for LIBPRELUDE -- Yoann Vandoorselaere
	1362	# Modified for LIBGNUTLS -- nmav
	1363	# Configure paths for LIBGCRYPT
	1364	# Shamelessly stolen from the one of XDELTA by Owen Taylor
	1365	# Werner Koch 99-12-09
	1366
	1367	dnl AM_PATH_LIBPRELUDE([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
	1368	dnl Test for libprelude, and define LIBPRELUDE_PREFIX, LIBPRELUDE_CFLAGS, LIBPRELUDE_PTHREAD_CFLAGS,
	1369	dnl LIBPRELUDE_LDFLAGS, and LIBPRELUDE_LIBS
	1370	dnl
	1371	AC_DEFUN([AM_PATH_LIBPRELUDE],
	1372	[dnl
	1373	dnl Get the cflags and libraries from the libprelude-config script
	1374	dnl
	1375	dnl AC_ARG_WITH(libprelude-prefix,
	1376	dnl [ --with-libprelude-prefix=PFX Prefix where libprelude is installed (optional)],
	1377	dnl libprelude_config_prefix="$withval", libprelude_config_prefix="")
	1378	dnl
	1379	dnl if test x$libprelude_config_prefix != x ; then
	1380	dnl if test x${LIBPRELUDE_CONFIG+set} != xset ; then
	1381	dnl LIBPRELUDE_CONFIG=$libprelude_config_prefix/bin/libprelude-config
	1382	dnl fi
	1383	dnl fi
	1384	dnl
	1385	dnl AC_PATH_PROG(LIBPRELUDE_CONFIG, libprelude-config, no)
	1386	min_libprelude_version=ifelse([$1], ,0.1.0,$1)
	1387	AC_MSG_CHECKING(for libprelude - version >= $min_libprelude_version)
	1388	no_libprelude=""
	1389	if test "$LIBPRELUDE_CONFIG" = "no" ; then
	1390	no_libprelude=yes
	1391	else
	1392	LIBPRELUDE_CFLAGS=`$LIBPRELUDE_CONFIG $libprelude_config_args --cflags`
	1393	LIBPRELUDE_PTHREAD_CFLAGS=`$LIBPRELUDE_CONFIG $libprelude_config_args --pthread-cflags`
	1394	LIBPRELUDE_LDFLAGS=`$LIBPRELUDE_CONFIG $libprelude_config_args --ldflags`
	1395	LIBPRELUDE_LIBS=`$LIBPRELUDE_CONFIG $libprelude_config_args --libs`
	1396	LIBPRELUDE_PREFIX=`$LIBPRELUDE_CONFIG $libprelude_config_args --prefix`
	1397	LIBPRELUDE_CONFIG_PREFIX=`$LIBPRELUDE_CONFIG $libprelude_config_args --config-prefix`
	1398	libprelude_config_version=`$LIBPRELUDE_CONFIG $libprelude_config_args --version`
	1399
	1400
	1401	ac_save_CFLAGS="$CFLAGS"
	1402	ac_save_LDFLAGS="$LDFLAGS"
	1403	ac_save_LIBS="$LIBS"
	1404	CFLAGS="$CFLAGS $LIBPRELUDE_CFLAGS"
	1405	LDFLAGS="$LDFLAGS $LIBPRELUDE_LDFLAGS"
	1406	LIBS="$LIBS $LIBPRELUDE_LIBS"
	1407	dnl
	1408	dnl Now check if the installed libprelude is sufficiently new. Also sanity
	1409	dnl checks the results of libprelude-config to some extent
	1410	dnl
	1411	rm -f conf.libpreludetest
	1412	AC_TRY_RUN([
	1413	#include <stdio.h>
	1414	#include <stdlib.h>
	1415	#include <string.h>
	1416	#include <libprelude/prelude.h>
	1417
	1418	int
	1419	main ()
	1420	{
	1421	system ("touch conf.libpreludetest");
	1422
	1423	if( strcmp( prelude_check_version(NULL), "$libprelude_config_version" ) )
	1424	{
	1425	printf("\n*** 'libprelude-config --version' returned %s, but LIBPRELUDE (%s)\n",
	1426	"$libprelude_config_version", prelude_check_version(NULL) );
	1427	printf("*** was found! If libprelude-config was correct, then it is best\n");
	1428	printf("*** to remove the old version of LIBPRELUDE. You may also be able to fix the error\n");
	1429	printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
	1430	printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
	1431	printf("*** required on your system.\n");
	1432	printf("*** If libprelude-config was wrong, set the environment variable LIBPRELUDE_CONFIG\n");
	1433	printf("*** to point to the correct copy of libprelude-config, and remove the file config.cache\n");
	1434	printf("*** before re-running configure\n");
	1435	}
	1436	else if ( strcmp(prelude_check_version(NULL), LIBPRELUDE_VERSION ) )
	1437	{
	1438	printf("\n*** LIBPRELUDE header file (version %s) does not match\n", LIBPRELUDE_VERSION);
	1439	printf("*** library (version %s)\n", prelude_check_version(NULL) );
	1440	}
	1441	else
	1442	{
	1443	if ( prelude_check_version( "$min_libprelude_version" ) )
	1444	{
	1445	return 0;
	1446	}
	1447	else
	1448	{
	1449	printf("no\n*** An old version of LIBPRELUDE (%s) was found.\n",
	1450	prelude_check_version(NULL) );
	1451	printf("*** You need a version of LIBPRELUDE newer than %s. The latest version of\n",
	1452	"$min_libprelude_version" );
	1453	printf("*** LIBPRELUDE is always available from http://www.prelude-ids.org/download/releases.\n");
	1454	printf("*** \n");
	1455	printf("*** If you have already installed a sufficiently new version, this error\n");
	1456	printf("*** probably means that the wrong copy of the libprelude-config shell script is\n");
	1457	printf("*** being found. The easiest way to fix this is to remove the old version\n");
	1458	printf("*** of LIBPRELUDE, but you can also set the LIBPRELUDE_CONFIG environment to point to the\n");
	1459	printf("*** correct copy of libprelude-config. (In this case, you will have to\n");
	1460	printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
	1461	printf("*** so that the correct libraries are found at run-time))\n");
	1462	}
	1463	}
	1464	return 1;
	1465	}
	1466	],, no_libprelude=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
	1467	CFLAGS="$ac_save_CFLAGS"
	1468	LIBS="$ac_save_LIBS"
	1469	LDFLAGS="$ac_save_LDFLAGS"
	1470	fi
	1471
	1472	if test "x$no_libprelude" = x ; then
	1473	AC_MSG_RESULT(yes)
	1474	ifelse([$2], , :, [$2])
	1475	else
	1476	if test -f conf.libpreludetest ; then
	1477	:
	1478	else
	1479	AC_MSG_RESULT(no)
	1480	fi
	1481	if test "$LIBPRELUDE_CONFIG" = "no" ; then
	1482	echo "*** The libprelude-config script installed by LIBPRELUDE could not be found"
	1483	echo "*** If LIBPRELUDE was installed in PREFIX, make sure PREFIX/bin is in"
	1484	echo "*** your path, or set the LIBPRELUDE_CONFIG environment variable to the"
	1485	echo "*** full path to libprelude-config."
	1486	else
	1487	if test -f conf.libpreludetest ; then
	1488	:
	1489	else
	1490	echo "*** Could not run libprelude test program, checking why..."
	1491	CFLAGS="$CFLAGS $LIBPRELUDE_CFLAGS"
	1492	LDFLAGS="$LDFLAGS $LIBPRELUDE_LDFLAGS"
	1493	LIBS="$LIBS $LIBPRELUDE_LIBS"
	1494	AC_TRY_LINK([
	1495	#include <stdio.h>
	1496	#include <stdlib.h>
	1497	#include <string.h>
	1498	#include <libprelude/prelude.h>
	1499	], [ return !!prelude_check_version(NULL); ],
	1500	[ echo "*** The test program compiled, but did not run. This usually means"
	1501	echo "*** that the run-time linker is not finding LIBPRELUDE or finding the wrong"
	1502	echo "*** version of LIBPRELUDE. If it is not finding LIBPRELUDE, you'll need to set your"
	1503	echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
	1504	echo "*** to the installed location Also, make sure you have run ldconfig if that"
	1505	echo "*** is required on your system"
	1506	echo "***"
	1507	echo "*** If you have an old version installed, it is best to remove it, although"
	1508	echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
	1509	echo "***" ],
	1510	[ echo "*** The test program failed to compile or link. See the file config.log for the"
	1511	echo "*** exact error that occured. This usually means LIBPRELUDE was incorrectly installed"
	1512	echo "*** or that you have moved LIBPRELUDE since it was installed. In the latter case, you"
	1513	echo "*** may want to edit the libprelude-config script: $LIBPRELUDE_CONFIG" ])
	1514	CFLAGS="$ac_save_CFLAGS"
	1515	LDFLAGS="$ac_save_LDFLAGS"
	1516	LIBS="$ac_save_LIBS"
	1517	fi
	1518	fi
	1519	LIBPRELUDE_CFLAGS=""
	1520	LIBPRELUDE_LDFLAGS=""
	1521	LIBPRELUDE_LIBS=""
	1522	ifelse([$3], , :, [$3])
	1523	fi
	1524	rm -f conf.libpreludetest
	1525	AC_SUBST(LIBPRELUDE_CFLAGS)
	1526	AC_SUBST(LIBPRELUDE_PTHREAD_CFLAGS)
	1527	AC_SUBST(LIBPRELUDE_LDFLAGS)
	1528	AC_SUBST(LIBPRELUDE_LIBS)
	1529	AC_SUBST(LIBPRELUDE_PREFIX)
	1530	AC_SUBST(LIBPRELUDE_CONFIG_PREFIX)
	1531	])
	1532
[129]	1533
	1534	##### http://autoconf-archive.cryp.to/acx_pthread.html
	1535	#
	1536	# SYNOPSIS
	1537	#
	1538	# ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
	1539	#
	1540	# DESCRIPTION
	1541	#
	1542	# This macro figures out how to build C programs using POSIX threads.
	1543	# It sets the PTHREAD_LIBS output variable to the threads library and
	1544	# linker flags, and the PTHREAD_CFLAGS output variable to any special
	1545	# C compiler flags that are needed. (The user can also force certain
	1546	# compiler flags/libs to be tested by setting these environment
	1547	# variables.)
	1548	#
	1549	# Also sets PTHREAD_CC to any special C compiler that is needed for
	1550	# multi-threaded programs (defaults to the value of CC otherwise).
	1551	# (This is necessary on AIX to use the special cc_r compiler alias.)
	1552	#
	1553	# NOTE: You are assumed to not only compile your program with these
	1554	# flags, but also link it with them as well. e.g. you should link
	1555	# with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
	1556	# $LIBS
	1557	#
	1558	# If you are only building threads programs, you may wish to use
	1559	# these variables in your default LIBS, CFLAGS, and CC:
	1560	#
	1561	# LIBS="$PTHREAD_LIBS $LIBS"
	1562	# CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
	1563	# CC="$PTHREAD_CC"
	1564	#
	1565	# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
	1566	# constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
	1567	# that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
	1568	#
	1569	# ACTION-IF-FOUND is a list of shell commands to run if a threads
	1570	# library is found, and ACTION-IF-NOT-FOUND is a list of commands to
	1571	# run it if it is not found. If ACTION-IF-FOUND is not specified, the
	1572	# default action will define HAVE_PTHREAD.
	1573	#
	1574	# Please let the authors know if this macro fails on any platform, or
	1575	# if you have any other suggestions or comments. This macro was based
	1576	# on work by SGJ on autoconf scripts for FFTW (http://www.fftw.org/)
	1577	# (with help from M. Frigo), as well as ac_pthread and hb_pthread
	1578	# macros posted by Alejandro Forero Cuervo to the autoconf macro
	1579	# repository. We are also grateful for the helpful feedback of
	1580	# numerous users.
	1581	#
	1582	# LAST MODIFICATION
	1583	#
	1584	# 2007-07-29
	1585	#
	1586	# COPYLEFT
	1587	#
	1588	# Copyright (c) 2007 Steven G. Johnson <stevenj@alum.mit.edu>
	1589	#
	1590	# This program is free software: you can redistribute it and/or
	1591	# modify it under the terms of the GNU General Public License as
	1592	# published by the Free Software Foundation, either version 3 of the
	1593	# License, or (at your option) any later version.
	1594	#
	1595	# This program is distributed in the hope that it will be useful, but
	1596	# WITHOUT ANY WARRANTY; without even the implied warranty of
	1597	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	1598	# General Public License for more details.
	1599	#
	1600	# You should have received a copy of the GNU General Public License
	1601	# along with this program. If not, see
	1602	# <http://www.gnu.org/licenses/>.
	1603	#
	1604	# As a special exception, the respective Autoconf Macro's copyright
	1605	# owner gives unlimited permission to copy, distribute and modify the
	1606	# configure scripts that are the output of Autoconf when processing
	1607	# the Macro. You need not follow the terms of the GNU General Public
	1608	# License when using or distributing such scripts, even though
	1609	# portions of the text of the Macro appear in them. The GNU General
	1610	# Public License (GPL) does govern all other use of the material that
	1611	# constitutes the Autoconf Macro.
	1612	#
	1613	# This special exception to the GPL applies to versions of the
	1614	# Autoconf Macro released by the Autoconf Macro Archive. When you
	1615	# make and distribute a modified version of the Autoconf Macro, you
	1616	# may extend this special exception to the GPL to apply to your
	1617	# modified version as well.
	1618
	1619	AC_DEFUN([ACX_PTHREAD], [
	1620	AC_REQUIRE([AC_CANONICAL_HOST])
	1621	AC_LANG_SAVE
	1622	AC_LANG_C
	1623	acx_pthread_ok=no
	1624
	1625	# We used to check for pthread.h first, but this fails if pthread.h
	1626	# requires special compiler flags (e.g. on True64 or Sequent).
	1627	# It gets checked for in the link test anyway.
	1628
	1629	# First of all, check if the user has set any of the PTHREAD_LIBS,
	1630	# etcetera environment variables, and if threads linking works using
	1631	# them:
	1632	if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
	1633	save_CFLAGS="$CFLAGS"
	1634	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
	1635	save_LIBS="$LIBS"
	1636	LIBS="$PTHREAD_LIBS $LIBS"
	1637	AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
	1638	AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
	1639	AC_MSG_RESULT($acx_pthread_ok)
	1640	if test x"$acx_pthread_ok" = xno; then
	1641	PTHREAD_LIBS=""
	1642	PTHREAD_CFLAGS=""
	1643	fi
	1644	LIBS="$save_LIBS"
	1645	CFLAGS="$save_CFLAGS"
	1646	fi
	1647
	1648	# We must check for the threads library under a number of different
	1649	# names; the ordering is very important because some systems
	1650	# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
	1651	# libraries is broken (non-POSIX).
	1652
	1653	# Create a list of thread flags to try. Items starting with a "-" are
	1654	# C compiler flags, and other items are library names, except for "none"
	1655	# which indicates that we try without any flags at all, and "pthread-config"
	1656	# which is a program returning the flags for the Pth emulation library.
	1657
	1658	acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
	1659
	1660	# The ordering is (sometimes) important. Some notes on the
	1661	# individual items follow:
	1662
	1663	# pthreads: AIX (must check this before -lpthread)
	1664	# none: in case threads are in libc; should be tried before -Kthread and
	1665	# other compiler flags to prevent continual compiler warnings
	1666	# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
	1667	# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
	1668	# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
	1669	# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
	1670	# -pthreads: Solaris/gcc
	1671	# -mthreads: Mingw32/gcc, Lynx/gcc
	1672	# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
	1673	# doesn't hurt to check since this sometimes defines pthreads too;
	1674	# also defines -D_REENTRANT)
	1675	# ... -mt is also the pthreads flag for HP/aCC
	1676	# pthread: Linux, etcetera
	1677	# --thread-safe: KAI C++
	1678	# pthread-config: use pthread-config program (for GNU Pth library)
	1679
	1680	case "${host_cpu}-${host_os}" in
	1681	solaris)
	1682
	1683	# On Solaris (at least, for some versions), libc contains stubbed
	1684	# (non-functional) versions of the pthreads routines, so link-based
	1685	# tests will erroneously succeed. (We need to link with -pthreads/-mt/
	1686	# -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
	1687	# a function called by this macro, so we could check for that, but
	1688	# who knows whether they'll stub that too in a future libc.) So,
	1689	# we'll just look for -pthreads and -lpthread first:
	1690
	1691	acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
	1692	;;
	1693	esac
	1694
	1695	if test x"$acx_pthread_ok" = xno; then
	1696	for flag in $acx_pthread_flags; do
	1697
	1698	case $flag in
	1699	none)
	1700	AC_MSG_CHECKING([whether pthreads work without any flags])
	1701	;;
	1702
	1703	-*)
	1704	AC_MSG_CHECKING([whether pthreads work with $flag])
	1705	PTHREAD_CFLAGS="$flag"
	1706	;;
	1707
	1708	pthread-config)
	1709	AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
	1710	if test x"$acx_pthread_config" = xno; then continue; fi
	1711	PTHREAD_CFLAGS="`pthread-config --cflags`"
	1712	PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
	1713	;;
	1714
	1715	*)
	1716	AC_MSG_CHECKING([for the pthreads library -l$flag])
	1717	PTHREAD_LIBS="-l$flag"
	1718	;;
	1719	esac
	1720
	1721	save_LIBS="$LIBS"
	1722	save_CFLAGS="$CFLAGS"
	1723	LIBS="$PTHREAD_LIBS $LIBS"
	1724	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
	1725
	1726	# Check for various functions. We must include pthread.h,
	1727	# since some functions may be macros. (On the Sequent, we
	1728	# need a special flag -Kthread to make this header compile.)
	1729	# We check for pthread_join because it is in -lpthread on IRIX
	1730	# while pthread_create is in libc. We check for pthread_attr_init
	1731	# due to DEC craziness with -lpthreads. We check for
	1732	# pthread_cleanup_push because it is one of the few pthread
	1733	# functions on Solaris that doesn't have a non-functional libc stub.
	1734	# We try pthread_create on general principles.
	1735	AC_TRY_LINK([#include <pthread.h>],
	1736	[pthread_t th; pthread_join(th, 0);
	1737	pthread_attr_init(0); pthread_cleanup_push(0, 0);
	1738	pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
	1739	[acx_pthread_ok=yes])
	1740
	1741	LIBS="$save_LIBS"
	1742	CFLAGS="$save_CFLAGS"
	1743
	1744	AC_MSG_RESULT($acx_pthread_ok)
	1745	if test "x$acx_pthread_ok" = xyes; then
	1746	break;
	1747	fi
	1748
	1749	PTHREAD_LIBS=""
	1750	PTHREAD_CFLAGS=""
	1751	done
	1752	fi
	1753
	1754	# Various other checks:
	1755	if test "x$acx_pthread_ok" = xyes; then
	1756	save_LIBS="$LIBS"
	1757	LIBS="$PTHREAD_LIBS $LIBS"
	1758	save_CFLAGS="$CFLAGS"
	1759	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
	1760
	1761	# Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
	1762	AC_MSG_CHECKING([for joinable pthread attribute])
	1763	attr_name=unknown
	1764	for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
	1765	AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
	1766	[attr_name=$attr; break])
	1767	done
	1768	AC_MSG_RESULT($attr_name)
	1769	if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
	1770	AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
	1771	[Define to necessary symbol if this constant
	1772	uses a non-standard name on your system.])
	1773	fi
	1774
	1775	AC_MSG_CHECKING([if more special flags are required for pthreads])
	1776	flag=no
	1777	case "${host_cpu}-${host_os}" in
	1778	-aix \| -freebsd \| -darwin) flag="-D_THREAD_SAFE";;
	1779	solaris \| -osf \| -hpux) flag="-D_REENTRANT";;
	1780	esac
	1781	AC_MSG_RESULT(${flag})
	1782	if test "x$flag" != xno; then
	1783	PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
	1784	fi
	1785
	1786	LIBS="$save_LIBS"
	1787	CFLAGS="$save_CFLAGS"
	1788
	1789	# More AIX lossage: must compile with xlc_r or cc_r
	1790	if test x"$GCC" != xyes; then
	1791	AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
	1792	else
	1793	PTHREAD_CC=$CC
	1794	fi
	1795	else
	1796	PTHREAD_CC="$CC"
	1797	fi
	1798
	1799	AC_SUBST(PTHREAD_LIBS)
	1800	AC_SUBST(PTHREAD_CFLAGS)
	1801	AC_SUBST(PTHREAD_CC)
	1802
	1803	# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
	1804	if test x"$acx_pthread_ok" = xyes; then
	1805	ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
	1806	:
	1807	else
	1808	acx_pthread_ok=no
	1809	$2
	1810	fi
	1811	AC_LANG_RESTORE
	1812	])dnl ACX_PTHREAD
	1813
[1]	1814	dnl -wedit:notab- Please keep this as the last line.
	1815

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