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Last change on this file since 5d18f3 was 6dde30, checked in by Frederik Heber <frederik.heber@…>, 22 months ago
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1	# boost.m4: Locate Boost headers and libraries for autoconf-based projects.
2	# Copyright (C) 2007-2011, 2014 Benoit Sigoure <tsuna@lrde.epita.fr>
3	#
4	# This program is free software: you can redistribute it and/or modify
5	# it under the terms of the GNU General Public License as published by
6	# the Free Software Foundation, either version 3 of the License, or
7	# (at your option) any later version.
8	#
9	# Additional permission under section 7 of the GNU General Public
10	# License, version 3 ("GPLv3"):
11	#
12	# If you convey this file as part of a work that contains a
13	# configuration script generated by Autoconf, you may do so under
14	# terms of your choice.
15	#
16	# This program is distributed in the hope that it will be useful,
17	# but WITHOUT ANY WARRANTY; without even the implied warranty of
18	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19	# GNU General Public License for more details.
20	#
21	# You should have received a copy of the GNU General Public License
22	# along with this program. If not, see <http://www.gnu.org/licenses/>.
23
24	m4_define([_BOOST_SERIAL], [m4_translit([
25	# serial 36
26	], [#
27	], [])])
28
29	# Original sources can be found at http://github.com/tsuna/boost.m4
30	# You can fetch the latest version of the script by doing:
31	# wget http://github.com/tsuna/boost.m4/raw/master/build-aux/boost.m4
32
33	# ------ #
34	# README #
35	# ------ #
36
37	# This file provides several macros to use the various Boost libraries.
38	# The first macro is BOOST_REQUIRE. It will simply check if it's possible to
39	# find the Boost headers of a given (optional) minimum version and it will
40	# define BOOST_CPPFLAGS accordingly. It will add an option --with-boost to
41	# your configure so that users can specify non standard locations.
42	# If the user's environment contains BOOST_ROOT and --with-boost was not
43	# specified, --with-boost=$BOOST_ROOT is implicitly used.
44	# For more README and documentation, go to http://github.com/tsuna/boost.m4
45	# Note: THESE MACROS ASSUME THAT YOU USE LIBTOOL. If you don't, don't worry,
46	# simply read the README, it will show you what to do step by step.
47
48	m4_pattern_forbid([^_?(BOOST\|Boost)_])
49
50
51	# _BOOST_SED_CPP(SED-PROGRAM, PROGRAM,
52	# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
53	# --------------------------------------------------------
54	# Same as AC_EGREP_CPP, but leave the result in conftest.i.
55	#
56	# SED-PROGRAM is not overquoted, as in AC_EGREP_CPP. It is expanded
57	# in double-quotes, so escape your double quotes.
58	#
59	# It could be useful to turn this into a macro which extracts the
60	# value of any macro.
61	m4_define([_BOOST_SED_CPP],
62	[AC_LANG_PUSH([C++])dnl
63	AC_LANG_PREPROC_REQUIRE()dnl
64	AC_REQUIRE([AC_PROG_SED])dnl
65	AC_LANG_CONFTEST([AC_LANG_SOURCE([[$2]])])
66	AS_IF([dnl eval is necessary to expand ac_cpp.
67	dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
68	dnl Beware of Windows end-of-lines, for instance if we are running
69	dnl some Windows programs under Wine. In that case, boost/version.hpp
70	dnl is certainly using "\r\n", but the regular Unix shell will only
71	dnl strip `\n' with backquotes, not the `\r'. This results in
72	dnl boost_cv_lib_version='1_37\r' for instance, which breaks
73	dnl everything else.
74	dnl Cannot use 'dnl' after [$4] because a trailing dnl may break AC_CACHE_CHECK
75	dnl
76	dnl Beware that GCC 5, when expanding macros, may embed # line directives
77	dnl a within single line:
78	dnl
79	dnl # 1 "conftest.cc"
80	dnl # 1 "<built-in>"
81	dnl # 1 "<command-line>"
82	dnl # 1 "conftest.cc"
83	dnl # 1 "/opt/local/include/boost/version.hpp" 1 3
84	dnl # 2 "conftest.cc" 2
85	dnl boost-lib-version =
86	dnl # 2 "conftest.cc" 3
87	dnl "1_56"
88	dnl
89	dnl So get rid of the # and empty lines, and glue the remaining ones together.
90	(eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD \|
91	grep -v '#' \|
92	grep -v '^[[[:space:]]]*$' \|
93	tr -d '\r' \|
94	tr -s '\n' ' ' \|
95	$SED -n -e "$1" >conftest.i 2>&1],
96	[$3],
97	[$4])
98	rm -rf conftest*
99	AC_LANG_POP([C++])dnl
100	])# _BOOST_SED_CPP
101
102
103
104	# BOOST_REQUIRE([VERSION], [ACTION-IF-NOT-FOUND])
105	# -----------------------------------------------
106	# Look for Boost. If version is given, it must either be a literal of the form
107	# "X.Y.Z" where X, Y and Z are integers (the ".Z" part being optional) or a
108	# variable "$var".
109	# Defines the value BOOST_CPPFLAGS. This macro only checks for headers with
110	# the required version, it does not check for any of the Boost libraries.
111	# On # success, defines HAVE_BOOST. On failure, calls the optional
112	# ACTION-IF-NOT-FOUND action if one was supplied.
113	# Otherwise aborts with an error message.
114	AC_DEFUN_ONCE([BOOST_REQUIRE],
115	[AC_REQUIRE([AC_PROG_CXX])dnl
116	AC_REQUIRE([AC_PROG_GREP])dnl
117	echo "$as_me: this is boost.m4[]_BOOST_SERIAL" >&AS_MESSAGE_LOG_FD
118	boost_save_IFS=$IFS
119	boost_version_req=$1
120	IFS=.
121	set x $boost_version_req 0 0 0
122	IFS=$boost_save_IFS
123	shift
124	boost_version_req=`expr "$[1]" '' 100000 + "$[2]" '' 100 + "$[3]"`
125	boost_version_req_string=$[1].$[2].$[3]
126	AC_ARG_WITH([boost],
127	[AS_HELP_STRING([--with-boost=DIR],
128	[prefix of Boost $1 @<:@guess@:>@])])dnl
129	AC_ARG_VAR([BOOST_ROOT],[Location of Boost installation])dnl
130	# If BOOST_ROOT is set and the user has not provided a value to
131	# --with-boost, then treat BOOST_ROOT as if it the user supplied it.
132	if test x"$BOOST_ROOT" != x; then
133	if test x"$with_boost" = x; then
134	AC_MSG_NOTICE([Detected BOOST_ROOT; continuing with --with-boost=$BOOST_ROOT])
135	with_boost=$BOOST_ROOT
136	else
137	AC_MSG_NOTICE([Detected BOOST_ROOT=$BOOST_ROOT, but overridden by --with-boost=$with_boost])
138	fi
139	fi
140	AC_SUBST([DISTCHECK_CONFIGURE_FLAGS],
141	["$DISTCHECK_CONFIGURE_FLAGS '--with-boost=$with_boost'"])dnl
142	boost_save_CPPFLAGS=$CPPFLAGS
143	AC_CACHE_CHECK([for Boost headers version >= $boost_version_req_string],
144	[boost_cv_inc_path],
145	[boost_cv_inc_path=no
146	AC_LANG_PUSH([C++])dnl
147	m4_pattern_allow([^BOOST_VERSION$])dnl
148	AC_LANG_CONFTEST([AC_LANG_PROGRAM([[#include <boost/version.hpp>
149	#if !defined BOOST_VERSION
150	# error BOOST_VERSION is not defined
151	#elif BOOST_VERSION < $boost_version_req
152	# error Boost headers version < $boost_version_req
153	#endif
154	]])])
155	# If the user provided a value to --with-boost, use it and only it.
156	case $with_boost in #(
157	''\|yes) set x '' /opt/local/include /usr/local/include /opt/include \
158	/usr/include C:/Boost/include;; #(
159	*) set x "$with_boost/include" "$with_boost";;
160	esac
161	shift
162	for boost_dir
163	do
164	# Without --layout=system, Boost (or at least some versions) installs
165	# itself in <prefix>/include/boost-<version>. This inner loop helps to
166	# find headers in such directories.
167	#
168	# Any ${boost_dir}/boost-x_xx directories are searched in reverse version
169	# order followed by ${boost_dir}. The final '.' is a sentinel for
170	# searching $boost_dir" itself. Entries are whitespace separated.
171	#
172	# I didn't indent this loop on purpose (to avoid over-indented code)
173	boost_layout_system_search_list=`cd "$boost_dir" 2>/dev/null \
174	&& ls -1 \| "${GREP}" '^boost-' \| sort -rn -t- -k2 \
175	&& echo .`
176	for boost_inc in $boost_layout_system_search_list
177	do
178	if test x"$boost_inc" != x.; then
179	boost_inc="$boost_dir/$boost_inc"
180	else
181	boost_inc="$boost_dir" # Uses sentinel in boost_layout_system_search_list
182	fi
183	if test x"$boost_inc" != x; then
184	# We are going to check whether the version of Boost installed
185	# in $boost_inc is usable by running a compilation that
186	# #includes it. But if we pass a -I/some/path in which Boost
187	# is not installed, the compiler will just skip this -I and
188	# use other locations (either from CPPFLAGS, or from its list
189	# of system include directories). As a result we would use
190	# header installed on the machine instead of the /some/path
191	# specified by the user. So in that precise case (trying
192	# $boost_inc), make sure the version.hpp exists.
193	#
194	# Use test -e as there can be symlinks.
195	test -e "$boost_inc/boost/version.hpp" \|\| continue
196	CPPFLAGS="$CPPFLAGS -I$boost_inc"
197	fi
198	AC_COMPILE_IFELSE([], [boost_cv_inc_path=yes], [boost_cv_version=no])
199	if test x"$boost_cv_inc_path" = xyes; then
200	if test x"$boost_inc" != x; then
201	boost_cv_inc_path=$boost_inc
202	fi
203	break 2
204	fi
205	done
206	done
207	AC_LANG_POP([C++])dnl
208	])
209	case $boost_cv_inc_path in #(
210	no)
211	boost_errmsg="cannot find Boost headers version >= $boost_version_req_string"
212	m4_if([$2], [], [AC_MSG_ERROR([$boost_errmsg])],
213	[AC_MSG_NOTICE([$boost_errmsg])])
214	$2
215	;;#(
216	yes)
217	BOOST_CPPFLAGS=
218	;;#(
219	*)
220	AC_SUBST([BOOST_CPPFLAGS], ["-I$boost_cv_inc_path"])dnl
221	;;
222	esac
223	if test x"$boost_cv_inc_path" != xno; then
224	AC_DEFINE([HAVE_BOOST], [1],
225	[Defined if the requested minimum BOOST version is satisfied])
226	AC_CACHE_CHECK([for Boost's header version],
227	[boost_cv_lib_version],
228	[m4_pattern_allow([^BOOST_LIB_VERSION$])dnl
229	_BOOST_SED_CPP([[/^boost-lib-version = /{s///;s/[\" ]//g;p;q;}]],
230	[#include <boost/version.hpp>
231	boost-lib-version = BOOST_LIB_VERSION],
232	[boost_cv_lib_version=`cat conftest.i`])])
233	# e.g. "134" for 1_34_1 or "135" for 1_35
234	boost_major_version=`echo "$boost_cv_lib_version" \| sed 's/_//;s/_.*//'`
235	case $boost_major_version in #(
236	'' \| [[!0-9]])
237	AC_MSG_ERROR([invalid value: boost_major_version='$boost_major_version'])
238	;;
239	esac
240	fi
241	CPPFLAGS=$boost_save_CPPFLAGS
242	])# BOOST_REQUIRE
243
244
245	# BOOST_STATIC()
246	# --------------
247	# Add the "--enable-static-boost" configure argument. If this argument is given
248	# on the command line, static versions of the libraries will be looked up.
249	AC_DEFUN([BOOST_STATIC],
250	[AC_ARG_ENABLE([static-boost],
251	[AS_HELP_STRING([--enable-static-boost],
252	[Prefer the static boost libraries over the shared ones [no]])],
253	[enable_static_boost=yes],
254	[enable_static_boost=no])])# BOOST_STATIC
255
256
257	# BOOST_FIND_HEADER([HEADER-NAME], [ACTION-IF-NOT-FOUND], [ACTION-IF-FOUND])
258	# --------------------------------------------------------------------------
259	# Wrapper around AC_CHECK_HEADER for Boost headers. Useful to check for
260	# some parts of the Boost library which are only made of headers and don't
261	# require linking (such as Boost.Foreach).
262	#
263	# Default ACTION-IF-NOT-FOUND: Fail with a fatal error unless Boost couldn't be
264	# found in the first place, in which case by default a notice is issued to the
265	# user. Presumably if we haven't died already it's because it's OK to not have
266	# Boost, which is why only a notice is issued instead of a hard error.
267	#
268	# Default ACTION-IF-FOUND: define the preprocessor symbol HAVE_<HEADER-NAME> in
269	# case of success # (where HEADER-NAME is written LIKE_THIS, e.g.,
270	# HAVE_BOOST_FOREACH_HPP).
271	AC_DEFUN([BOOST_FIND_HEADER],
272	[AC_REQUIRE([BOOST_REQUIRE])dnl
273	if test x"$boost_cv_inc_path" = xno; then
274	m4_default([$2], [AC_MSG_NOTICE([Boost not available, not searching for $1])])
275	else
276	AC_LANG_PUSH([C++])dnl
277	boost_save_CPPFLAGS=$CPPFLAGS
278	CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
279	AC_CHECK_HEADER([$1],
280	[m4_default([$3], [AC_DEFINE(AS_TR_CPP([HAVE_$1]), [1],
281	[Define to 1 if you have <$1>])])],
282	[m4_default([$2], [AC_MSG_ERROR([cannot find $1])])])
283	CPPFLAGS=$boost_save_CPPFLAGS
284	AC_LANG_POP([C++])dnl
285	fi
286	])# BOOST_FIND_HEADER
287
288
289	# BOOST_FIND_LIBS([COMPONENT-NAME], [CANDIDATE-LIB-NAMES],
290	# [PREFERRED-RT-OPT], [HEADER-NAME], [CXX-TEST],
291	# [CXX-PROLOGUE], [CXX-POST-INCLUDE-PROLOGUE],
292	# [ERROR_ON_UNUSABLE])
293	# --------------------------------------------------------------
294	# Look for the Boost library COMPONENT-NAME (e.g., `thread', for
295	# libboost_thread) under the possible CANDIDATE-LIB-NAMES (e.g.,
296	# "thread_win32 thread"). Check that HEADER-NAME works and check that
297	# libboost_LIB-NAME can link with the code CXX-TEST. The optional
298	# argument CXX-PROLOGUE can be used to include some C++ code before
299	# the `main' function. The CXX-POST-INCLUDE-PROLOGUE can be used to
300	# include some code before the `main' function, but after the
301	# `#include <HEADER-NAME>'.
302	#
303	# Invokes BOOST_FIND_HEADER([HEADER-NAME]) (see above).
304	#
305	# Boost libraries typically come compiled with several flavors (with different
306	# runtime options) so PREFERRED-RT-OPT is the preferred suffix. A suffix is one
307	# or more of the following letters: sgdpn (in that order). s = static
308	# runtime, d = debug build, g = debug/diagnostic runtime, p = STLPort build,
309	# n = (unsure) STLPort build without iostreams from STLPort (it looks like `n'
310	# must always be used along with `p'). Additionally, PREFERRED-RT-OPT can
311	# start with `mt-' to indicate that there is a preference for multi-thread
312	# builds. Some sample values for PREFERRED-RT-OPT: (nothing), mt, d, mt-d, gdp
313	# ... If you want to make sure you have a specific version of Boost
314	# (eg, >= 1.33) you must invoke BOOST_REQUIRE before this macro.
315	#
316	# ERROR_ON_UNUSABLE can be set to "no" if the caller does not want their
317	# configure to fail
318	AC_DEFUN([BOOST_FIND_LIBS],
319	[AC_REQUIRE([BOOST_REQUIRE])dnl
320	AC_REQUIRE([_BOOST_FIND_COMPILER_TAG])dnl
321	AC_REQUIRE([BOOST_STATIC])dnl
322	AC_REQUIRE([_BOOST_GUESS_WHETHER_TO_USE_MT])dnl
323	if test x"$boost_cv_inc_path" = xno; then
324	AC_MSG_NOTICE([Boost not available, not searching for the Boost $1 library])
325	else
326	dnl The else branch is huge and wasn't indented on purpose.
327	AC_LANG_PUSH([C++])dnl
328	AS_VAR_PUSHDEF([Boost_lib], [boost_cv_lib_$1])dnl
329	AS_VAR_PUSHDEF([Boost_lib_LDFLAGS], [boost_cv_lib_$1_LDFLAGS])dnl
330	AS_VAR_PUSHDEF([Boost_lib_LDPATH], [boost_cv_lib_$1_LDPATH])dnl
331	AS_VAR_PUSHDEF([Boost_lib_LIBS], [boost_cv_lib_$1_LIBS])dnl
332	AS_IF([test x"$8" = "xno"], [not_found_header='true'])
333	BOOST_FIND_HEADER([$4], [$not_found_header])
334	boost_save_CPPFLAGS=$CPPFLAGS
335	CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
336	AC_CACHE_CHECK([for the Boost $1 library], [Boost_lib],
337	[_BOOST_FIND_LIBS($@)])
338	case $Boost_lib in #(
339	(yes) _AC_MSG_LOG_CONFTEST
340	AC_DEFINE(AS_TR_CPP([HAVE_BOOST_$1]), [1], [Defined if the Boost $1 library is available])dnl
341	AC_SUBST(AS_TR_CPP([BOOST_$1_LDFLAGS]), [$Boost_lib_LDFLAGS])dnl
342	AC_SUBST(AS_TR_CPP([BOOST_$1_LDPATH]), [$Boost_lib_LDPATH])dnl
343	AC_SUBST([BOOST_LDPATH], [$Boost_lib_LDPATH])dnl
344	AC_SUBST(AS_TR_CPP([BOOST_$1_LIBS]), [$Boost_lib_LIBS])dnl
345	;;
346	(no) _AC_MSG_LOG_CONFTEST
347	AS_IF([test x"$8" != "xno"], [
348	AC_MSG_ERROR([cannot find flags to link with the Boost $1 library (libboost-$1)])
349	])
350	;;
351	esac
352	CPPFLAGS=$boost_save_CPPFLAGS
353	AS_VAR_POPDEF([Boost_lib])dnl
354	AS_VAR_POPDEF([Boost_lib_LDFLAGS])dnl
355	AS_VAR_POPDEF([Boost_lib_LDPATH])dnl
356	AS_VAR_POPDEF([Boost_lib_LIBS])dnl
357	AC_LANG_POP([C++])dnl
358	fi
359	])
360
361
362	# BOOST_FIND_LIB([LIB-NAME],
363	# [PREFERRED-RT-OPT], [HEADER-NAME], [CXX-TEST],
364	# [CXX-PROLOGUE], [CXX-POST-INCLUDE-PROLOGUE],
365	# [ERROR_ON_UNUSABLE])
366	# --------------------------------------------------------------
367	# Backward compatibility wrapper for BOOST_FIND_LIBS.
368	# ERROR_ON_UNUSABLE can be set to "no" if the caller does not want their
369	# configure to fail
370	AC_DEFUN([BOOST_FIND_LIB],
371	[BOOST_FIND_LIBS([$1], $@)])
372
373
374	# _BOOST_FIND_LIBS([LIB-NAME], [CANDIDATE-LIB-NAMES],
375	# [PREFERRED-RT-OPT], [HEADER-NAME], [CXX-TEST],
376	# [CXX-PROLOGUE], [CXX-POST-INCLUDE-PROLOGUE],
377	# [ERROR_ON_UNUSABLE])
378	# --------------------------------------------------------------
379	# Real implementation of BOOST_FIND_LIBS: rely on these local macros:
380	# Boost_lib, Boost_lib_LDFLAGS, Boost_lib_LDPATH, Boost_lib_LIBS
381	#
382	# The algorithm is as follows: first look for a given library name
383	# according to the user's PREFERRED-RT-OPT. For each library name, we
384	# prefer to use the ones that carry the tag (toolset name). Each
385	# library is searched through the various standard paths were Boost is
386	# usually installed. If we can't find the standard variants, we try
387	# to enforce -mt (for instance on MacOSX, libboost_thread.dylib
388	# doesn't exist but there's -obviously- libboost_thread-mt.dylib).
389	#
390	# ERROR_ON_UNUSABLE can be set to "no" if the caller does not want their
391	# configure to fail
392	AC_DEFUN([_BOOST_FIND_LIBS],
393	[Boost_lib=no
394	case "$3" in #(
395	(mt \| mt- \| mt-x64) boost_mt=-mt-x64; boost_rtopt=;; #(
396	(mt* \| mt-) boost_mt=-mt-x64; boost_rtopt=`expr "X$3" : 'Xmt-\(.*\)'`;; #(
397	(*) boost_mt=; boost_rtopt=$3;;
398	esac
399	if test $enable_static_boost = yes; then
400	boost_rtopt="s$boost_rtopt"
401	fi
402	# Find the proper debug variant depending on what we've been asked to find.
403	case $boost_rtopt in #(
404	(d) boost_rt_d=$boost_rtopt;; #(
405	([[sgpn]]) # Insert the `d' at the right place (in between `sg' and `pn')
406	boost_rt_d=`echo "$boost_rtopt" \| sed 's/\(sg\)\(pn\)/\1\2/'`;; #(
407	(*) boost_rt_d='-d';;
408	esac
409	# If the PREFERRED-RT-OPT are not empty, prepend a `-'.
410	test -n "$boost_rtopt" && boost_rtopt="-$boost_rtopt"
411	$boost_guess_use_mt && boost_mt=-mt
412	# Look for the abs path the static archive.
413	# $libext is computed by Libtool but let's make sure it's non empty.
414	test -z "$libext" &&
415	AC_MSG_ERROR([the libext variable is empty, did you invoke Libtool?])
416	boost_save_ac_objext=$ac_objext
417	# Generate the test file.
418	AC_LANG_CONFTEST([AC_LANG_PROGRAM([$7
419	#include <$4>
420	$6], [$5])])
421	dnl Optimization hacks: compiling C++ is slow, especially with Boost. What
422	dnl we're trying to do here is guess the right combination of link flags
423	dnl (LIBS / LDFLAGS) to use a given library. This can take several
424	dnl iterations before it succeeds and is thus very slow. So what we do
425	dnl instead is that we compile the code first (and thus get an object file,
426	dnl typically conftest.o). Then we try various combinations of link flags
427	dnl until we succeed to link conftest.o in an executable. The problem is
428	dnl that the various TRY_LINK / COMPILE_IFELSE macros of Autoconf always
429	dnl remove all the temporary files including conftest.o. So the trick here
430	dnl is to temporarily change the value of ac_objext so that conftest.o is
431	dnl preserved accross tests. This is obviously fragile and I will burn in
432	dnl hell for not respecting Autoconf's documented interfaces, but in the
433	dnl mean time, it optimizes the macro by a factor of 5 to 30.
434	dnl Another small optimization: the first argument of AC_COMPILE_IFELSE left
435	dnl empty because the test file is generated only once above (before we
436	dnl start the for loops).
437	AC_COMPILE_IFELSE([],
438	[ac_objext=do_not_rm_me_plz],
439	[AS_IF([test x"$8" != x"no"], [
440	AC_MSG_ERROR([cannot compile a test that uses Boost $1])
441	])
442	])
443	ac_objext=$boost_save_ac_objext
444	boost_failed_libs=
445	# Don't bother to ident the following nested for loops, only the 2
446	# innermost ones matter.
447	for boost_lib_ in $2; do
448	for boost_tag_ in -$boost_cv_lib_tag ''; do
449	for boost_ver_ in -$boost_cv_lib_version ''; do
450	for boost_mt_ in $boost_mt -mt -mt-x64 ''; do
451	for boost_rtopt_ in $boost_rtopt '' -d; do
452	for boost_full_suffix in \
453	$boost_last_suffix \
454	x$boost_tag_$boost_mt_$boost_rtopt_$boost_ver_ \
455	x$boost_tag_$boost_rtopt_$boost_ver_ \
456	x$boost_tag_$boost_mt_$boost_ver_ \
457	x$boost_tag_$boost_ver_
458	do
459	boost_real_suffix=`echo "$boost_full_suffix" \| sed 's/^x//'`
460	boost_lib="boost_$boost_lib_$boost_real_suffix"
461	# Avoid testing twice the same lib
462	case $boost_failed_libs in #(
463	(@$boost_lib@) continue;;
464	esac
465	# If with_boost is empty, we'll search in /lib first, which is not quite
466	# right so instead we'll try to a location based on where the headers are.
467	boost_tmp_lib=$with_boost
468	test x"$with_boost" = x && boost_tmp_lib=${boost_cv_inc_path%/include}
469	for boost_ldpath in "$boost_tmp_lib/lib" '' \
470	/opt/local/lib* /usr/local/lib* /opt/lib* /usr/lib* \
471	"$with_boost" C:/Boost/lib /lib*
472	do
473	# Don't waste time with directories that don't exist.
474	if test x"$boost_ldpath" != x && test ! -e "$boost_ldpath"; then
475	continue
476	fi
477	boost_save_LDFLAGS=$LDFLAGS
478	# Are we looking for a static library?
479	case $boost_ldpath:$boost_rtopt_ in #(
480	(?:s) # Yes (Non empty boost_ldpath + s in rt opt)
481	Boost_lib_LIBS="$boost_ldpath/lib$boost_lib.$libext"
482	test -e "$Boost_lib_LIBS" \|\| continue;; #(
483	(*) # No: use -lboost_foo to find the shared library.
484	Boost_lib_LIBS="-l$boost_lib";;
485	esac
486	boost_save_LIBS=$LIBS
487	LIBS="$Boost_lib_LIBS $LIBS"
488	test x"$boost_ldpath" != x && LDFLAGS="$LDFLAGS -L$boost_ldpath"
489	dnl First argument of AC_LINK_IFELSE left empty because the test file is
490	dnl generated only once above (before we start the for loops).
491	_BOOST_AC_LINK_IFELSE([],
492	[Boost_lib=yes], [Boost_lib=no])
493	ac_objext=$boost_save_ac_objext
494	LDFLAGS=$boost_save_LDFLAGS
495	LIBS=$boost_save_LIBS
496	if test x"$Boost_lib" = xyes; then
497	# Check or used cached result of whether or not using -R or
498	# -rpath makes sense. Some implementations of ld, such as for
499	# Mac OSX, require -rpath but -R is the flag known to work on
500	# other systems. https://github.com/tsuna/boost.m4/issues/19
501	AC_CACHE_VAL([boost_cv_rpath_link_ldflag],
502	[case $boost_ldpath in
503	'') # Nothing to do.
504	boost_cv_rpath_link_ldflag=
505	boost_rpath_link_ldflag_found=yes;;
506	*)
507	for boost_cv_rpath_link_ldflag in -Wl,-R, -Wl,-rpath,; do
508	LDFLAGS="$boost_save_LDFLAGS -L$boost_ldpath $boost_cv_rpath_link_ldflag$boost_ldpath"
509	LIBS="$Boost_lib_LIBS $boost_save_LIBS"
510	_BOOST_AC_LINK_IFELSE([],
511	[boost_rpath_link_ldflag_found=yes
512	break],
513	[boost_rpath_link_ldflag_found=no])
514	done
515	;;
516	esac
517	AS_IF([test "x$boost_rpath_link_ldflag_found" != "xyes"],
518	[AC_MSG_ERROR([Unable to determine whether to use -R or -rpath])])
519	LDFLAGS=$boost_save_LDFLAGS
520	LIBS=$boost_save_LIBS
521	])
522	test x"$boost_ldpath" != x &&
523	Boost_lib_LDFLAGS="-L$boost_ldpath $boost_cv_rpath_link_ldflag$boost_ldpath"
524	Boost_lib_LDPATH="$boost_ldpath"
525	boost_last_suffix="$boost_full_suffix"
526	break 7
527	else
528	boost_failed_libs="$boost_failed_libs@$boost_lib@"
529	fi
530	done
531	done
532	done
533	done
534	done
535	done
536	done # boost_lib_
537	rm -f conftest.$ac_objext
538	])
539
540
541
542	# --------------------------------------- #
543	# Checks for the various Boost libraries. #
544	# --------------------------------------- #
545
546	# List of boost libraries: http://www.boost.org/libs/libraries.htm
547	# The page http://beta.boost.org/doc/libs is useful: it gives the first release
548	# version of each library (among other things).
549
550	# BOOST_DEFUN(LIBRARY, CODE)
551	# --------------------------
552	# Define BOOST_<LIBRARY-UPPERCASE> as a macro that runs CODE.
553	#
554	# Use indir to avoid the warning on underquoted macro name given to AC_DEFUN.
555	m4_define([BOOST_DEFUN],
556	[m4_indir([AC_DEFUN],
557	m4_toupper([BOOST_$1]),
558	[m4_pushdef([BOOST_Library], [$1])dnl
559	$2
560	m4_popdef([BOOST_Library])dnl
561	])
562	])
563
564
565	# BOOST_ANY()
566	# ------------
567	# Look for Boost.Any
568	BOOST_DEFUN([Any],
569	[BOOST_FIND_HEADER([boost/any.hpp])])
570
571
572	# BOOST_ARRAY()
573	# -------------
574	# Look for Boost.Array
575	BOOST_DEFUN([Array],
576	[BOOST_FIND_HEADER([boost/array.hpp])])
577
578
579	# BOOST_ASIO()
580	# ------------
581	# Look for Boost.Asio (new in Boost 1.35).
582	BOOST_DEFUN([Asio],
583	[AC_REQUIRE([BOOST_SYSTEM])dnl
584	BOOST_FIND_HEADER([boost/asio.hpp])])
585
586	# BOOST_BIMAP()
587	# ------------
588	# Look for Boost.Bimap
589	BOOST_DEFUN([Bimap],
590	[BOOST_FIND_HEADER([boost/bimap.hpp])])
591
592
593	# BOOST_ASSIGN()
594	# -------------
595	# Look for Boost.Assign
596	BOOST_DEFUN([Assign],
597	[BOOST_FIND_HEADER([boost/assign.hpp])])
598
599
600	# BOOST_ATOMIC([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
601	# -------------------------------
602	# Look for Boost.Atomic. For the documentation of PREFERRED-RT-OPT, see the
603	# documentation of BOOST_FIND_LIB above.
604	BOOST_DEFUN([Atomic],
605	[BOOST_FIND_LIB([atomic], [$1],
606	[boost/atomic.hpp],
607	[boost::atomic<int> a;],
608	[ ],
609	[#ifdef HAVE_UNISTD_H
610	#include <unistd.h>
611	#endif
612	#ifdef HAVE_STDINT_H
613	#include <stdint.h>
614	#endif], [$2])
615	])# BOOST_ATOMIC
616
617
618	# BOOST_BIND()
619	# ------------
620	# Look for Boost.Bind.
621	BOOST_DEFUN([Bind],
622	[BOOST_FIND_HEADER([boost/bind.hpp])])
623
624
625	# BOOST_CAST()
626	# ------------
627	# Look for Boost.Cast
628	BOOST_DEFUN([Cast],
629	[BOOST_FIND_HEADER([boost/cast.hpp])])
630
631
632	# BOOST_CHRONO([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
633	# --------------
634	# Look for Boost.Chrono.
635	BOOST_DEFUN([Chrono],
636	[# Do we have to check for Boost.System? This link-time dependency was
637	# added as of 1.35.0. If we have a version <1.35, we must not attempt to
638	# find Boost.System as it didn't exist by then.
639	if test $boost_major_version -ge 135; then
640	BOOST_SYSTEM([$1], [$2])
641	fi # end of the Boost.System check.
642	boost_filesystem_save_LIBS=$LIBS
643	boost_filesystem_save_LDFLAGS=$LDFLAGS
644	m4_pattern_allow([^BOOST_SYSTEM_(LIBS\|LDFLAGS)$])dnl
645	LIBS="$LIBS $BOOST_SYSTEM_LIBS"
646	LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS"
647	BOOST_FIND_LIB([chrono], [$1],
648	[boost/chrono.hpp],
649	[boost::chrono::thread_clock d;], [], [], [$2])
650	if test $enable_static_boost = yes && test $boost_major_version -ge 135; then
651	BOOST_CHRONO_LIBS="$BOOST_CHRONO_LIBS $BOOST_SYSTEM_LIBS"
652	fi
653	LIBS=$boost_filesystem_save_LIBS
654	LDFLAGS=$boost_filesystem_save_LDFLAGS
655	])# BOOST_CHRONO
656
657
658	# BOOST_CONTEXT([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
659	# -----------------------------------
660	# Look for Boost.Context. For the documentation of PREFERRED-RT-OPT, see the
661	# documentation of BOOST_FIND_LIB above.
662	#
663	# * This library was introduced in Boost 1.51.0
664	# * The signatures of make_fcontext() and jump_fcontext were changed in 1.56.0
665	# * A dependency on boost_thread appears in 1.57.0
666	# * The implementation details were moved to boost::context::detail in 1.61.0
667	# * 1.61 also introduces execution_context_v2, which is the "lowest common
668	# denominator" for boost::context presence since then.
669	# * boost::context::fiber was introduced in 1.69 and execution_context_v2 was
670	# removed in 1.72
671	BOOST_DEFUN([Context],
672	[boost_context_save_LIBS=$LIBS
673	boost_context_save_LDFLAGS=$LDFLAGS
674	if test $boost_major_version -ge 157; then
675	BOOST_THREAD([$1], [$2])
676	m4_pattern_allow([^BOOST_THREAD_(LIBS\|LDFLAGS)$])dnl
677	LIBS="$LIBS $BOOST_THREAD_LIBS"
678	LDFLAGS="$LDFLAGS $BOOST_THREAD_LDFLAGS"
679	fi
680
681	if test $boost_major_version -ge 169; then
682
683	BOOST_FIND_LIB([context], [$1],
684	[boost/context/fiber.hpp], [[
685	namespace ctx=boost::context;
686	int a;
687	ctx::fiber source{[&a](ctx::fiber&& sink){
688	a=0;
689	int b=1;
690	for(;;){
691	sink=std::move(sink).resume();
692	int next=a+b;
693	a=b;
694	b=next;
695	}
696	return std::move(sink);
697	}};
698	for (int j=0;j<10;++j) {
699	source=std::move(source).resume();
700	}
701	return a == 34;
702	]], [], [], [$2])
703
704	elif test $boost_major_version -ge 161; then
705
706	BOOST_FIND_LIB([context], [$1],
707	[boost/context/execution_context_v2.hpp], [[
708	namespace ctx=boost::context;
709	int res=0;
710	int n=35;
711	ctx::execution_context<int> source(
712	[n, &res](ctx::execution_context<int> sink, int) mutable {
713	int a=0;
714	int b=1;
715	while(n-->0){
716	auto result=sink(a);
717	sink=std::move(std::get<0>(result));
718	auto next=a+b;
719	a=b;
720	b=next;
721	}
722	return sink;
723	});
724	for(int i=0;i<10;++i){
725	auto result=source(i);
726	source=std::move(std::get<0>(result));
727	res = std::get<1>(result);
728	}
729	return res == 34;
730	]], [], [], [$2])
731
732	else
733
734	BOOST_FIND_LIB([context], [$1],
735	[boost/context/fcontext.hpp],[[
736
737	// creates a stack
738	void * stack_pointer = new void*[4096];
739	std::size_t const size = sizeof(void*[4096]);
740
741	#if BOOST_VERSION <= 105100
742	ctx::make_fcontext(&fc, f);
743	return ctx::jump_fcontext(&fcm, &fc, 3) == 6;
744
745	#else
746
747	fc = ctx::make_fcontext(stack_pointer, size, f);
748	return ctx::jump_fcontext(&fcm, fc, 3) == 6;
749
750	#endif
751
752
753	]],[dnl
754
755	#include <boost/version.hpp>
756	#if BOOST_VERSION <= 105100
757
758	namespace ctx = boost::ctx;
759
760	static ctx::fcontext_t fcm, fc;
761
762	static void f(intptr_t i) {
763	ctx::jump_fcontext(&fc, &fcm, i * 2);
764	}
765
766	#elif BOOST_VERSION <= 105500
767
768	namespace ctx = boost::context;
769
770	// context
771	static ctx::fcontext_t fcm, *fc;
772
773	// context-function
774	static void f(intptr_t i) {
775	ctx::jump_fcontext(fc, &fcm, i * 2);
776	}
777
778	#else
779
780	namespace ctx = boost::context;
781
782	// context
783	static ctx::fcontext_t fcm, fc;
784
785	// context-function
786	static void f(intptr_t i) {
787	ctx::jump_fcontext(&fc, fcm, i * 2);
788	}
789	#endif
790	], [], [], [$2])
791
792	fi
793
794	LIBS=$boost_context_save_LIBS
795	LDFLAGS=$boost_context_save_LDFLAGS
796	])# BOOST_CONTEXT
797
798
799	# BOOST_CONVERSION()
800	# ------------------
801	# Look for Boost.Conversion (cast / lexical_cast)
802	BOOST_DEFUN([Conversion],
803	[BOOST_FIND_HEADER([boost/cast.hpp])
804	BOOST_FIND_HEADER([boost/lexical_cast.hpp])
805	])# BOOST_CONVERSION
806
807
808	# BOOST_COROUTINE([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
809	# -----------------------------------
810	# Look for Boost.Coroutine. For the documentation of PREFERRED-RT-OPT, see the
811	# documentation of BOOST_FIND_LIB above. This library was introduced in Boost
812	# 1.53.0
813	BOOST_DEFUN([Coroutine],
814	[
815	boost_coroutine_save_LIBS=$LIBS
816	boost_coroutine_save_LDFLAGS=$LDFLAGS
817	# Link-time dependency from coroutine to context
818	BOOST_CONTEXT([$1], [$2])
819	# Starting from Boost 1.55 a dependency on Boost.System is added
820	if test $boost_major_version -ge 155; then
821	BOOST_SYSTEM([$1], [$2])
822	fi
823	m4_pattern_allow([^BOOST_(CONTEXT\|SYSTEM)_(LIBS\|LDFLAGS)])
824	LIBS="$LIBS $BOOST_CONTEXT_LIBS $BOOST_SYSTEM_LIBS"
825	LDFLAGS="$LDFLAGS $BOOST_CONTEXT_LDFLAGS"
826
827	# in 1.53 coroutine was a header only library
828	if test $boost_major_version -eq 153; then
829	AS_IF([test x"$2" = "xno"], [not_found_header='true'])
830	BOOST_FIND_HEADER([boost/coroutine/coroutine.hpp], [$not_found_header])
831	else
832	BOOST_FIND_LIB([coroutine], [$1],
833	[boost/coroutine/coroutine.hpp],
834	[
835	#include <boost/version.hpp>
836	#if BOOST_VERSION <= 105500
837	boost::coroutines::coroutine<int(int)> coro; coro.get();
838	#else
839	boost::coroutines::asymmetric_coroutine<int>::pull_type coro; coro.get();
840	#endif
841	], [], [], [$2])
842	fi
843	# Link-time dependency from coroutine to context, existed only in 1.53, in 1.54
844	# coroutine doesn't use context from its headers but from its library.
845	if test $boost_major_version -eq 153 \|\| test $enable_static_boost = yes && test $boost_major_version -ge 154; then
846	BOOST_COROUTINE_LIBS="$BOOST_COROUTINE_LIBS $BOOST_CONTEXT_LIBS"
847	BOOST_COROUTINE_LDFLAGS="$BOOST_COROUTINE_LDFLAGS $BOOST_CONTEXT_LDFLAGS"
848	fi
849	if test $enable_static_boost = yes && test $boost_major_version -ge 155; then
850	BOOST_COROUTINE_LIBS="$BOOST_COROUTINE_LIBS $BOOST_SYSTEM_LIBS"
851	BOOST_COROUTINE_LDFLAGS="$BOOST_COROUTINE_LDFLAGS $BOOST_SYSTEM_LDFLAGS"
852	fi
853	LIBS=$boost_coroutine_save_LIBS
854	LDFLAGS=$boost_coroutine_save_LDFLAGS
855	])# BOOST_COROUTINE
856
857
858	# BOOST_CRC()
859	# -----------
860	# Look for Boost.CRC
861	BOOST_DEFUN([CRC],
862	[BOOST_FIND_HEADER([boost/crc.hpp])
863	])# BOOST_CRC
864
865
866	# BOOST_DATE_TIME([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
867	# -----------------------------------
868	# Look for Boost.Date_Time. For the documentation of PREFERRED-RT-OPT, see the
869	# documentation of BOOST_FIND_LIB above.
870	BOOST_DEFUN([Date_Time],
871	[BOOST_FIND_LIB([date_time], [$1],
872	[boost/date_time/posix_time/posix_time.hpp],
873	[boost::posix_time::ptime t;], [], [], [$2])
874	])# BOOST_DATE_TIME
875
876
877	# BOOST_EXCEPTION()
878	# ------------
879	# Look for Boost.Exception
880	BOOST_DEFUN([Exception],
881	[BOOST_FIND_HEADER([boost/exception/all.hpp])])
882
883
884	# BOOST_FILESYSTEM([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
885	# ------------------------------------
886	# Look for Boost.Filesystem. For the documentation of PREFERRED-RT-OPT, see
887	# the documentation of BOOST_FIND_LIB above.
888	# Do not check for boost/filesystem.hpp because this file was introduced in
889	# 1.34.
890	BOOST_DEFUN([Filesystem],
891	[# Do we have to check for Boost.System? This link-time dependency was
892	# added as of 1.35.0. If we have a version <1.35, we must not attempt to
893	# find Boost.System as it didn't exist by then.
894	if test $boost_major_version -ge 135; then
895	BOOST_SYSTEM([$1], [$2])
896	fi # end of the Boost.System check.
897	boost_filesystem_save_LIBS=$LIBS
898	boost_filesystem_save_LDFLAGS=$LDFLAGS
899	m4_pattern_allow([^BOOST_SYSTEM_(LIBS\|LDFLAGS)$])dnl
900	LIBS="$LIBS $BOOST_SYSTEM_LIBS"
901	LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS"
902	BOOST_FIND_LIB([filesystem], [$1],
903	[boost/filesystem/path.hpp], [boost::filesystem::path p;],
904	[], [], [$2])
905	if test $enable_static_boost = yes && test $boost_major_version -ge 135; then
906	BOOST_FILESYSTEM_LIBS="$BOOST_FILESYSTEM_LIBS $BOOST_SYSTEM_LIBS"
907	fi
908	LIBS=$boost_filesystem_save_LIBS
909	LDFLAGS=$boost_filesystem_save_LDFLAGS
910	])# BOOST_FILESYSTEM
911
912
913	# BOOST_FLYWEIGHT()
914	# -----------------
915	# Look for Boost.Flyweight.
916	BOOST_DEFUN([Flyweight],
917	[dnl There's a hidden dependency on pthreads.
918	AC_REQUIRE([_BOOST_PTHREAD_FLAG])dnl
919	BOOST_FIND_HEADER([boost/flyweight.hpp])
920	AC_SUBST([BOOST_FLYWEIGHT_LIBS], [$boost_cv_pthread_flag])
921	])
922
923
924	# BOOST_FOREACH()
925	# ---------------
926	# Look for Boost.Foreach.
927	BOOST_DEFUN([Foreach],
928	[BOOST_FIND_HEADER([boost/foreach.hpp])])
929
930
931	# BOOST_FORMAT()
932	# --------------
933	# Look for Boost.Format.
934	# Note: we can't check for boost/format/format_fwd.hpp because the header isn't
935	# standalone. It can't be compiled because it triggers the following error:
936	# boost/format/detail/config_macros.hpp:88: error: 'locale' in namespace 'std'
937	# does not name a type
938	BOOST_DEFUN([Format],
939	[BOOST_FIND_HEADER([boost/format.hpp])])
940
941
942	# BOOST_FUNCTION()
943	# ----------------
944	# Look for Boost.Function
945	BOOST_DEFUN([Function],
946	[BOOST_FIND_HEADER([boost/function.hpp])])
947
948
949	# BOOST_FUSION()
950	# -----------------
951	# Look for Boost.Fusion
952	BOOST_DEFUN([Fusion],
953	[BOOST_FIND_HEADER([boost/fusion/sequence.hpp])])
954
955
956	# BOOST_GEOMETRY()
957	# ----------------
958	# Look for Boost.Geometry (new since 1.47.0).
959	BOOST_DEFUN([Geometry],
960	[BOOST_FIND_HEADER([boost/geometry.hpp])
961	])# BOOST_GEOMETRY
962
963
964	# BOOST_GRAPH([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
965	# -------------------------------
966	# Look for Boost.Graphs. For the documentation of PREFERRED-RT-OPT, see the
967	# documentation of BOOST_FIND_LIB above.
968	BOOST_DEFUN([Graph],
969	[boost_graph_save_LIBS=$LIBS
970	boost_graph_save_LDFLAGS=$LDFLAGS
971	# Link-time dependency from graph to regex was added as of 1.40.0.
972	if test $boost_major_version -ge 140; then
973	BOOST_REGEX([$1], [$2])
974	m4_pattern_allow([^BOOST_REGEX_(LIBS\|LDFLAGS)$])dnl
975	LIBS="$LIBS $BOOST_REGEX_LIBS"
976	LDFLAGS="$LDFLAGS $BOOST_REGEX_LDFLAGS"
977	fi
978	BOOST_FIND_LIB([graph], [$1],
979	[boost/graph/adjacency_list.hpp], [boost::adjacency_list<> g;],
980	[], [], [$2])
981	LIBS=$boost_graph_save_LIBS
982	LDFLAGS=$boost_graph_save_LDFLAGS
983	])# BOOST_GRAPH
984
985
986	# BOOST_HASH()
987	# ------------
988	# Look for Boost.Functional/Hash
989	BOOST_DEFUN([Hash],
990	[BOOST_FIND_HEADER([boost/functional/hash.hpp])])
991
992
993	# BOOST_IOSTREAMS([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
994	# -----------------------------------
995	# Look for Boost.IOStreams. For the documentation of PREFERRED-RT-OPT, see the
996	# documentation of BOOST_FIND_LIB above.
997	BOOST_DEFUN([IOStreams],
998	[BOOST_FIND_LIB([iostreams], [$1],
999	[boost/iostreams/device/file_descriptor.hpp],
1000	[boost::iostreams::file_descriptor fd; fd.close();],
1001	[], [], [$2])
1002	])# BOOST_IOSTREAMS
1003
1004
1005	# BOOST_ITERATOR()
1006	# ------------
1007	# Look for Boost.Iterator
1008	BOOST_DEFUN([Iterator],
1009	[BOOST_FIND_HEADER([boost/iterator/iterator_adaptor.hpp])])
1010
1011
1012	# BOOST_LAMBDA()
1013	# --------------
1014	# Look for Boost.Lambda
1015	BOOST_DEFUN([Lambda],
1016	[BOOST_FIND_HEADER([boost/lambda/lambda.hpp])])
1017
1018
1019	# BOOST_LOCALE([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1020	# --------------
1021	# Look for Boost.Locale
1022	BOOST_DEFUN([Locale],
1023	[
1024	boost_locale_save_LIBS=$LIBS
1025	boost_locale_save_LDFLAGS=$LDFLAGS
1026	# require SYSTEM for boost-1.50.0 and up
1027	if test $boost_major_version -ge 150; then
1028	BOOST_SYSTEM([$1], [$2])
1029	m4_pattern_allow([^BOOST_SYSTEM_(LIBS\|LDFLAGS)$])dnl
1030	LIBS="$LIBS $BOOST_SYSTEM_LIBS"
1031	LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS"
1032	fi # end of the Boost.System check.
1033	BOOST_FIND_LIB([locale], [$1],
1034	[boost/locale.hpp],
1035	[[boost::locale::generator gen; std::locale::global(gen(""));]], [], [], [$2])
1036	LIBS=$boost_locale_save_LIBS
1037	LDFLAGS=$boost_locale_save_LDFLAGS
1038	])# BOOST_LOCALE
1039
1040	# BOOST_LOG([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1041	# -----------------------------
1042	# Look for Boost.Log. For the documentation of PREFERRED-RT-OPT, see the
1043	# documentation of BOOST_FIND_LIB above.
1044	BOOST_DEFUN([Log],
1045	[boost_log_save_LIBS=$LIBS
1046	boost_log_save_LDFLAGS=$LDFLAGS
1047	BOOST_SYSTEM([$1], [$2])
1048	BOOST_FILESYSTEM([$1], [$2])
1049	BOOST_DATE_TIME([$1], [$2])
1050	m4_pattern_allow([^BOOST_(SYSTEM\|FILESYSTEM\|DATE_TIME)_(LIBS\|LDFLAGS)$])dnl
1051	LIBS="$LIBS $BOOST_DATE_TIME_LIBS $BOOST_FILESYSTEM_LIBS $BOOST_SYSTEM_LIBS"
1052	LDFLAGS="$LDFLAGS $BOOST_DATE_TIME_LDFLAGS $BOOST_FILESYSTEM_LDFLAGS $BOOST_SYSTEM_LDFLAGS"
1053	BOOST_FIND_LIB([log], [$1],
1054	[boost/log/core/core.hpp],
1055	[boost::log::attribute a; a.get_value();], [], [], [$2])
1056	LIBS=$boost_log_save_LIBS
1057	LDFLAGS=$boost_log_save_LDFLAGS
1058	])# BOOST_LOG
1059
1060
1061	# BOOST_LOG_SETUP([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1062	# -----------------------------------
1063	# Look for Boost.Log. For the documentation of PREFERRED-RT-OPT, see the
1064	# documentation of BOOST_FIND_LIB above.
1065	BOOST_DEFUN([Log_Setup],
1066	[boost_log_setup_save_LIBS=$LIBS
1067	boost_log_setup_save_LDFLAGS=$LDFLAGS
1068	BOOST_LOG([$1])
1069	m4_pattern_allow([^BOOST_LOG_(LIBS\|LDFLAGS)$])dnl
1070	LIBS="$LIBS $BOOST_LOG_LIBS"
1071	LDFLAGS="$LDFLAGS $BOOST_LOG_LDFLAGS"
1072	BOOST_FIND_LIB([log_setup], [$1],
1073	[boost/log/utility/setup/from_settings.hpp],
1074	[boost::log::basic_settings<char> bs; bs.empty();], [], [], [$2])
1075	LIBS=$boost_log_setup_save_LIBS
1076	LDFLAGS=$boost_log_setup_save_LDFLAGS
1077	])# BOOST_LOG_SETUP
1078
1079
1080	# BOOST_MATH()
1081	# ------------
1082	# Look for Boost.Math
1083	# TODO: This library isn't header-only but it comes in multiple different
1084	# flavors that don't play well with BOOST_FIND_LIB (e.g, libboost_math_c99,
1085	# libboost_math_c99f, libboost_math_c99l, libboost_math_tr1,
1086	# libboost_math_tr1f, libboost_math_tr1l). This macro must be fixed to do the
1087	# right thing anyway.
1088	BOOST_DEFUN([Math],
1089	[BOOST_FIND_HEADER([boost/math/special_functions.hpp])])
1090
1091
1092	# BOOST_MPI([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1093	# -------------------------------
1094	# Look for Boost MPI. For the documentation of PREFERRED-RT-OPT, see the
1095	# documentation of BOOST_FIND_LIB above. Uses MPICXX variable if it is
1096	# set, otherwise tries CXX
1097	#
1098	BOOST_DEFUN([MPI],
1099	[boost_save_CXX=${CXX}
1100	boost_save_CXXCPP=${CXXCPP}
1101	if test x"${MPICXX}" != x; then
1102	CXX=${MPICXX}
1103	CXXCPP="${MPICXX} -E"
1104	fi
1105	BOOST_FIND_LIB([mpi], [$1],
1106	[boost/mpi.hpp],
1107	[int argc = 0;
1108	char **argv = 0;
1109	boost::mpi::environment env(argc,argv);],
1110	[], [], [$2])
1111	CXX=${boost_save_CXX}
1112	CXXCPP=${boost_save_CXXCPP}
1113	])# BOOST_MPI
1114
1115
1116	# BOOST_MPL()
1117	# ------------------
1118	# Look for Boost.MPL
1119	BOOST_DEFUN([MPL],
1120	[BOOST_FIND_HEADER([boost/mpl/for_each.hpp])])
1121
1122
1123	# BOOST_MULTIARRAY()
1124	# ------------------
1125	# Look for Boost.MultiArray
1126	BOOST_DEFUN([MultiArray],
1127	[BOOST_FIND_HEADER([boost/multi_array.hpp])])
1128
1129
1130	# BOOST_MULTIINDEXCCONTAINER()
1131	# ------------------
1132	# Look for Boost.MultiIndexContainer
1133	BOOST_DEFUN([MultiIndexContainer],
1134	[BOOST_FIND_HEADER([boost/multi_index_container.hpp])])
1135
1136
1137	# BOOST_NUMERIC_UBLAS()
1138	# --------------------------
1139	# Look for Boost.NumericUblas (Basic Linear Algebra)
1140	BOOST_DEFUN([Numeric_Ublas],
1141	[BOOST_FIND_HEADER([boost/numeric/ublas/vector.hpp])
1142	])# BOOST_NUMERIC_UBLAS
1143
1144
1145	# BOOST_NUMERIC_CONVERSION()
1146	# --------------------------
1147	# Look for Boost.NumericConversion (policy-based numeric conversion)
1148	BOOST_DEFUN([Numeric_Conversion],
1149	[BOOST_FIND_HEADER([boost/numeric/conversion/converter.hpp])
1150	])# BOOST_NUMERIC_CONVERSION
1151
1152
1153	# BOOST_NUMPY([PREFERRED-RT-OPT])
1154	# --------------------------------
1155	# Look for Boost.Python.Numpy. For the documentation of PREFERRED-RT-OPT,
1156	# see the documentation of BOOST_FIND_LIB above.
1157	BOOST_DEFUN([Numpy],
1158	[m4_pattern_allow([^BOOST_PYTHON_(LIBS\|LDFLAGS)$])dnl
1159	LIBS="$LIBS $BOOST_PYTHON_LIBS $BOOST_PYTHON_LIB"
1160	LDFLAGS="$LDFLAGS $BOOST_PYTHON_LDFLAGS"
1161	CPPFLAGS="$CPPFLAGS $BOOST_PYTHON_CPPFLAGS"
1162	BOOST_FIND_LIBS([numpy], [numpy numpy3], [$1],
1163	[boost/python/numpy.hpp],
1164	[ boost::python::numpy::initialize();], [])
1165	CPPFLAGS=$boost_numpy_save_CPPFLAGS
1166	LDFLAGS=$boost_numpy_save_LDFLAGS
1167	LIBS=$boost_numpy_save_LIBS
1168	])# BOOST_NUMPY
1169
1170
1171	# BOOST_OPTIONAL()
1172	# ----------------
1173	# Look for Boost.Optional
1174	BOOST_DEFUN([Optional],
1175	[BOOST_FIND_HEADER([boost/optional.hpp])])
1176
1177
1178	# BOOST_PREPROCESSOR()
1179	# --------------------
1180	# Look for Boost.Preprocessor
1181	BOOST_DEFUN([Preprocessor],
1182	[BOOST_FIND_HEADER([boost/preprocessor/repeat.hpp])])
1183
1184
1185	# BOOST_PROPERTY_TREE([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1186	# -----------------------------------------
1187	# Look for Boost.Property_Tree. For the documentation of PREFERRED-RT-OPT,
1188	# see the documentation of BOOST_FIND_LIB above.
1189	BOOST_DEFUN([Property_Tree],
1190	[BOOST_FIND_LIB([property_tree], [$1],
1191	[boost/property_tree/ptree.hpp],
1192	[boost::property_tree::ptree pt; boost::property_tree::read_xml d("test", pt);],
1193	[], [], [$2])
1194	])# BOOST_PROPERTY_TREE
1195
1196
1197	# BOOST_RANDOM()
1198	# --------------------
1199	# Look for Boost.Random
1200	BOOST_DEFUN([Random],
1201	[BOOST_FIND_HEADER([boost/random/random_number_generator.hpp])])
1202
1203
1204	# BOOST_RANGE()
1205	# --------------------
1206	# Look for Boost.Range
1207	BOOST_DEFUN([Range],
1208	[BOOST_FIND_HEADER([boost/range/adaptors.hpp])])
1209
1210	# BOOST_UNORDERED()
1211	# -----------------
1212	# Look for Boost.Unordered
1213	BOOST_DEFUN([Unordered],
1214	[BOOST_FIND_HEADER([boost/unordered_map.hpp])])
1215
1216
1217	# BOOST_UUID()
1218	# ------------
1219	# Look for Boost.Uuid
1220	BOOST_DEFUN([Uuid],
1221	[BOOST_FIND_HEADER([boost/uuid/uuid.hpp])])
1222
1223
1224	# BOOST_PROGRAM_OPTIONS([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1225	# -----------------------------------------
1226	# Look for Boost.Program_options. For the documentation of PREFERRED-RT-OPT,
1227	# see the documentation of BOOST_FIND_LIB above.
1228	BOOST_DEFUN([Program_Options],
1229	[BOOST_FIND_LIB([program_options], [$1],
1230	[boost/program_options.hpp],
1231	[boost::program_options::options_description d("test");],
1232	[], [], [$2])
1233	])# BOOST_PROGRAM_OPTIONS
1234
1235
1236
1237	# _BOOST_PYTHON_CONFIG(VARIABLE, FLAG, OPT)
1238	# ------------------------------------
1239	# Save VARIABLE, and define it via `python-config --FLAG`.
1240	# Substitute BOOST_PYTHON_VARIABLE.
1241	m4_define([_BOOST_PYTHON_CONFIG],
1242	[AC_SUBST([BOOST_PYTHON_$1],
1243	[$3`python-config --$2 2>/dev/null`])dnl
1244	boost_python_save_$1=$$1
1245	$1="$$1 $BOOST_PYTHON_$1"])
1246
1247
1248	# BOOST_PYTHON([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1249	# --------------------------------
1250	# Look for Boost.Python. For the documentation of PREFERRED-RT-OPT,
1251	# see the documentation of BOOST_FIND_LIB above.
1252	BOOST_DEFUN([Python],
1253	[_BOOST_PYTHON_CONFIG([CPPFLAGS], [includes])
1254	_BOOST_PYTHON_CONFIG([LDFLAGS], [ldflags])
1255	_BOOST_PYTHON_CONFIG([LIBS], [libs], [""])
1256	AC_SUBST([BOOST_PYTHON_LIB], [$BOOST_PYTHON_LIBS])
1257	m4_pattern_allow([^BOOST_PYTHON_MODULE$])dnl
1258	BOOST_FIND_LIBS([python], [python python3], [$1],
1259	[boost/python.hpp],
1260	[], [BOOST_PYTHON_MODULE(empty) {}], [], [$2])
1261	CPPFLAGS=$boost_python_save_CPPFLAGS
1262	LDFLAGS=$boost_python_save_LDFLAGS
1263	LIBS=$boost_python_save_LIBS
1264	])# BOOST_PYTHON
1265
1266
1267	# BOOST_REF()
1268	# -----------
1269	# Look for Boost.Ref
1270	BOOST_DEFUN([Ref],
1271	[BOOST_FIND_HEADER([boost/ref.hpp])])
1272
1273
1274	# BOOST_REGEX([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1275	# -------------------------------
1276	# Look for Boost.Regex. For the documentation of PREFERRED-RT-OPT, see the
1277	# documentation of BOOST_FIND_LIB above.
1278	BOOST_DEFUN([Regex],
1279	[BOOST_FIND_LIB([regex], [$1],
1280	[boost/regex.hpp],
1281	[boost::regex exp("*"); boost::regex_match("foo", exp);],
1282	[], [], [$2])
1283	])# BOOST_REGEX
1284
1285
1286	# BOOST_SCOPE_EXIT()
1287	# ------------
1288	# Look for Boost.ScopeExit.
1289	BOOST_DEFUN([SCOPE_EXIT],
1290	[BOOST_FIND_HEADER([boost/scope_exit.hpp])])
1291
1292
1293	# BOOST_SERIALIZATION([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1294	# ---------------------------------------
1295	# Look for Boost.Serialization. For the documentation of PREFERRED-RT-OPT, see
1296	# the documentation of BOOST_FIND_LIB above.
1297	BOOST_DEFUN([Serialization],
1298	[BOOST_FIND_LIB([serialization], [$1],
1299	[boost/archive/text_oarchive.hpp],
1300	[std::ostream* o = 0; // Cheap way to get an ostream...
1301	boost::archive::text_oarchive t(*o);],
1302	[], [], [$2])
1303	])# BOOST_SERIALIZATION
1304
1305
1306	# BOOST_SIGNALS([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1307	# ---------------------------------
1308	# Look for Boost.Signals. For the documentation of PREFERRED-RT-OPT, see the
1309	# documentation of BOOST_FIND_LIB above.
1310	BOOST_DEFUN([Signals],
1311	[BOOST_FIND_LIB([signals], [$1],
1312	[boost/signal.hpp],
1313	[boost::signal<void ()> s;],
1314	[], [], [$2])
1315	])# BOOST_SIGNALS
1316
1317
1318	# BOOST_SIGNALS2()
1319	# ----------------
1320	# Look for Boost.Signals2 (new since 1.39.0).
1321	BOOST_DEFUN([Signals2],
1322	[BOOST_FIND_HEADER([boost/signals2.hpp])
1323	])# BOOST_SIGNALS2
1324
1325
1326	# BOOST_SMART_PTR()
1327	# -----------------
1328	# Look for Boost.SmartPtr
1329	BOOST_DEFUN([Smart_Ptr],
1330	[BOOST_FIND_HEADER([boost/scoped_ptr.hpp])
1331	BOOST_FIND_HEADER([boost/shared_ptr.hpp])
1332	])
1333
1334
1335	# BOOST_STATICASSERT()
1336	# --------------------
1337	# Look for Boost.StaticAssert
1338	BOOST_DEFUN([StaticAssert],
1339	[BOOST_FIND_HEADER([boost/static_assert.hpp])])
1340
1341
1342	# BOOST_STRING_ALGO()
1343	# -------------------
1344	# Look for Boost.StringAlgo
1345	BOOST_DEFUN([String_Algo],
1346	[BOOST_FIND_HEADER([boost/algorithm/string.hpp])
1347	])
1348
1349
1350	# BOOST_SYSTEM([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1351	# --------------------------------
1352	# Look for Boost.System. For the documentation of PREFERRED-RT-OPT, see the
1353	# documentation of BOOST_FIND_LIB above. This library was introduced in Boost
1354	# 1.35.0.
1355	BOOST_DEFUN([System],
1356	[BOOST_FIND_LIB([system], [$1],
1357	[boost/system/error_code.hpp],
1358	[boost::system::error_code e; e.clear();], [], [], [$2])
1359	])# BOOST_SYSTEM
1360
1361
1362	# BOOST_TEST([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1363	# ------------------------------
1364	# Look for Boost.Test. For the documentation of PREFERRED-RT-OPT, see the
1365	# documentation of BOOST_FIND_LIB above.
1366	BOOST_DEFUN([Test],
1367	[m4_pattern_allow([^BOOST_CHECK$])dnl
1368	BOOST_FIND_LIB([unit_test_framework], [$1],
1369	[boost/test/unit_test.hpp], [BOOST_CHECK(2 == 2);],
1370	[using boost::unit_test::test_suite;
1371	test_suite* init_unit_test_suite(int argc, char ** argv)
1372	{ return NULL; }], [], [$2])
1373	])# BOOST_TEST
1374
1375
1376	# BOOST_THREAD([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1377	# ---------------------------------
1378	# Look for Boost.Thread. For the documentation of PREFERRED-RT-OPT, see the
1379	# documentation of BOOST_FIND_LIB above.
1380	BOOST_DEFUN([Thread],
1381	[dnl Having the pthread flag is required at least on GCC3 where
1382	dnl boost/thread.hpp would complain if we try to compile without
1383	dnl -pthread on GNU/Linux.
1384	AC_REQUIRE([_BOOST_PTHREAD_FLAG])dnl
1385	boost_thread_save_LIBS=$LIBS
1386	boost_thread_save_LDFLAGS=$LDFLAGS
1387	boost_thread_save_CPPFLAGS=$CPPFLAGS
1388	# Link-time dependency from thread to system was added as of 1.49.0.
1389	if test $boost_major_version -ge 149; then
1390	BOOST_SYSTEM([$1], [$2])
1391	fi # end of the Boost.System check.
1392	m4_pattern_allow([^BOOST_SYSTEM_(LIBS\|LDFLAGS)$])dnl
1393	LIBS="$LIBS $BOOST_SYSTEM_LIBS $boost_cv_pthread_flag"
1394	LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS"
1395	CPPFLAGS="$CPPFLAGS $boost_cv_pthread_flag"
1396
1397	# When compiling for the Windows platform, the threads library is named
1398	# differently. This suffix doesn't exist in new versions of Boost, or
1399	# possibly new versions of GCC on mingw I am assuming it's Boost's change for
1400	# now and I am setting version to 1.48, for lack of knowledge as to when this
1401	# change occurred.
1402	if test $boost_major_version -lt 148; then
1403	case $host_os in
1404	(mingw) boost_thread_lib_ext=_win32;;
1405	esac
1406	fi
1407	BOOST_FIND_LIBS([thread], [thread$boost_thread_lib_ext],
1408	[$1],
1409	[boost/thread.hpp], [boost::thread t; boost::mutex m;], [], [], [$2])
1410
1411	case $host_os in
1412	(mingw) boost_thread_w32_socket_link=-lws2_32;;
1413	esac
1414
1415	BOOST_THREAD_LIBS="$BOOST_THREAD_LIBS $BOOST_SYSTEM_LIBS $boost_cv_pthread_flag $boost_thread_w32_socket_link"
1416	BOOST_THREAD_LDFLAGS="$BOOST_SYSTEM_LDFLAGS"
1417	BOOST_CPPFLAGS="$BOOST_CPPFLAGS $boost_cv_pthread_flag"
1418	LIBS=$boost_thread_save_LIBS
1419	LDFLAGS=$boost_thread_save_LDFLAGS
1420	CPPFLAGS=$boost_thread_save_CPPFLAGS
1421	])# BOOST_THREAD
1422
1423	AU_ALIAS([BOOST_THREADS], [BOOST_THREAD])
1424
1425
1426	# BOOST_TOKENIZER()
1427	# -----------------
1428	# Look for Boost.Tokenizer
1429	BOOST_DEFUN([Tokenizer],
1430	[BOOST_FIND_HEADER([boost/tokenizer.hpp])])
1431
1432
1433	# BOOST_TRIBOOL()
1434	# ---------------
1435	# Look for Boost.Tribool
1436	BOOST_DEFUN([Tribool],
1437	[BOOST_FIND_HEADER([boost/logic/tribool_fwd.hpp])
1438	BOOST_FIND_HEADER([boost/logic/tribool.hpp])
1439	])
1440
1441
1442	# BOOST_TUPLE()
1443	# -------------
1444	# Look for Boost.Tuple
1445	BOOST_DEFUN([Tuple],
1446	[BOOST_FIND_HEADER([boost/tuple/tuple.hpp])])
1447
1448
1449	# BOOST_TYPETRAITS()
1450	# --------------------
1451	# Look for Boost.TypeTraits
1452	BOOST_DEFUN([TypeTraits],
1453	[BOOST_FIND_HEADER([boost/type_traits.hpp])])
1454
1455
1456	# BOOST_UTILITY()
1457	# ---------------
1458	# Look for Boost.Utility (noncopyable, result_of, base-from-member idiom,
1459	# etc.)
1460	BOOST_DEFUN([Utility],
1461	[BOOST_FIND_HEADER([boost/utility.hpp])])
1462
1463
1464	# BOOST_VARIANT()
1465	# ---------------
1466	# Look for Boost.Variant.
1467	BOOST_DEFUN([Variant],
1468	[BOOST_FIND_HEADER([boost/variant/variant_fwd.hpp])
1469	BOOST_FIND_HEADER([boost/variant.hpp])])
1470
1471
1472	# BOOST_POINTER_CONTAINER()
1473	# ------------------------
1474	# Look for Boost.PointerContainer
1475	BOOST_DEFUN([Pointer_Container],
1476	[BOOST_FIND_HEADER([boost/ptr_container/ptr_deque.hpp])
1477	BOOST_FIND_HEADER([boost/ptr_container/ptr_list.hpp])
1478	BOOST_FIND_HEADER([boost/ptr_container/ptr_vector.hpp])
1479	BOOST_FIND_HEADER([boost/ptr_container/ptr_array.hpp])
1480	BOOST_FIND_HEADER([boost/ptr_container/ptr_set.hpp])
1481	BOOST_FIND_HEADER([boost/ptr_container/ptr_map.hpp])
1482	])# BOOST_POINTER_CONTAINER
1483
1484
1485	# BOOST_WAVE([PREFERRED-RT-OPT], [ERROR_ON_UNUSABLE])
1486	# ------------------------------
1487	# NOTE: If you intend to use Wave/Spirit with thread support, make sure you
1488	# call BOOST_THREAD first.
1489	# Look for Boost.Wave. For the documentation of PREFERRED-RT-OPT, see the
1490	# documentation of BOOST_FIND_LIB above.
1491	BOOST_DEFUN([Wave],
1492	[AC_REQUIRE([BOOST_FILESYSTEM])dnl
1493	AC_REQUIRE([BOOST_DATE_TIME])dnl
1494	boost_wave_save_LIBS=$LIBS
1495	boost_wave_save_LDFLAGS=$LDFLAGS
1496	m4_pattern_allow([^BOOST_((FILE)?SYSTEM\|DATE_TIME\|THREAD)_(LIBS\|LDFLAGS)$])dnl
1497	LIBS="$LIBS $BOOST_SYSTEM_LIBS $BOOST_FILESYSTEM_LIBS $BOOST_DATE_TIME_LIBS \
1498	$BOOST_THREAD_LIBS"
1499	LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS $BOOST_FILESYSTEM_LDFLAGS \
1500	$BOOST_DATE_TIME_LDFLAGS $BOOST_THREAD_LDFLAGS"
1501	BOOST_FIND_LIB([wave], [$1],
1502	[boost/wave.hpp],
1503	[boost::wave::token_id id; get_token_name(id);], [], [], [$2])
1504	LIBS=$boost_wave_save_LIBS
1505	LDFLAGS=$boost_wave_save_LDFLAGS
1506	])# BOOST_WAVE
1507
1508
1509	# BOOST_XPRESSIVE()
1510	# -----------------
1511	# Look for Boost.Xpressive (new since 1.36.0).
1512	BOOST_DEFUN([Xpressive],
1513	[BOOST_FIND_HEADER([boost/xpressive/xpressive.hpp])])
1514
1515
1516	# ----------------- #
1517	# Internal helpers. #
1518	# ----------------- #
1519
1520
1521	# _BOOST_PTHREAD_FLAG()
1522	# ---------------------
1523	# Internal helper for BOOST_THREAD. Computes boost_cv_pthread_flag
1524	# which must be used in CPPFLAGS and LIBS.
1525	#
1526	# Yes, we need to put the -pthread thing in CPPFLAGS because with GCC3,
1527	# boost/thread.hpp will trigger a #error if -pthread isn't used:
1528	# boost/config/requires_threads.hpp:47:5: #error "Compiler threading support
1529	# is not turned on. Please set the correct command line options for
1530	# threading: -pthread (Linux), -pthreads (Solaris) or -mthreads (Mingw32)"
1531	#
1532	# Based on ACX_PTHREAD: http://autoconf-archive.cryp.to/acx_pthread.html
1533	AC_DEFUN([_BOOST_PTHREAD_FLAG],
1534	[AC_REQUIRE([AC_PROG_CXX])dnl
1535	AC_REQUIRE([AC_CANONICAL_HOST])dnl
1536	AC_LANG_PUSH([C++])dnl
1537	AC_CACHE_CHECK([for the flags needed to use pthreads], [boost_cv_pthread_flag],
1538	[ boost_cv_pthread_flag=
1539	# The ordering is (sometimes) important. Some notes on the
1540	# individual items follow:
1541	# (none): in case threads are in libc; should be tried before -Kthread and
1542	# other compiler flags to prevent continual compiler warnings
1543	# -lpthreads: AIX (must check this before -lpthread)
1544	# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
1545	# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
1546	# -llthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
1547	# -pthread: GNU Linux/GCC (kernel threads), BSD/GCC (userland threads)
1548	# -pthreads: Solaris/GCC
1549	# -mthreads: MinGW32/GCC, Lynx/GCC
1550	# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
1551	# doesn't hurt to check since this sometimes defines pthreads too;
1552	# also defines -D_REENTRANT)
1553	# ... -mt is also the pthreads flag for HP/aCC
1554	# -lpthread: GNU Linux, etc.
1555	# --thread-safe: KAI C++
1556	case $host_os in #(
1557	solaris)
1558	# On Solaris (at least, for some versions), libc contains stubbed
1559	# (non-functional) versions of the pthreads routines, so link-based
1560	# tests will erroneously succeed. (We need to link with -pthreads/-mt/
1561	# -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
1562	# a function called by this macro, so we could check for that, but
1563	# who knows whether they'll stub that too in a future libc.) So,
1564	# we'll just look for -pthreads and -lpthread first:
1565	boost_pthread_flags="-pthreads -lpthread -mt -pthread";; #(
1566	*)
1567	boost_pthread_flags="-lpthreads -Kthread -kthread -llthread -pthread \
1568	-pthreads -mthreads -lpthread --thread-safe -mt";;
1569	esac
1570	# Generate the test file.
1571	AC_LANG_CONFTEST([AC_LANG_PROGRAM([#include <pthread.h>
1572	void f(void){ return 0; }],
1573	[pthread_t th; pthread_create(&th,0,f,0); pthread_join(th,0);
1574	pthread_attr_t attr; pthread_attr_init(&attr); pthread_cleanup_push(0, 0);
1575	pthread_cleanup_pop(0);])])
1576	for boost_pthread_flag in '' $boost_pthread_flags; do
1577	boost_pthread_ok=false
1578	dnl Re-use the test file already generated.
1579	boost_pthreads__save_LIBS=$LIBS
1580	LIBS="$LIBS $boost_pthread_flag"
1581	AC_LINK_IFELSE([],
1582	[if grep ".*$boost_pthread_flag" conftest.err; then
1583	echo "This flag seems to have triggered warnings" >&AS_MESSAGE_LOG_FD
1584	else
1585	boost_pthread_ok=:; boost_cv_pthread_flag=$boost_pthread_flag
1586	fi])
1587	LIBS=$boost_pthreads__save_LIBS
1588	$boost_pthread_ok && break
1589	done
1590	])
1591	AC_LANG_POP([C++])dnl
1592	])# _BOOST_PTHREAD_FLAG
1593
1594
1595	# _BOOST_gcc_test(MAJOR, MINOR)
1596	# -----------------------------
1597	# Internal helper for _BOOST_FIND_COMPILER_TAG.
1598	m4_define([_BOOST_gcc_test],
1599	["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC @ gcc$1$2"])dnl
1600
1601	# _BOOST_mingw_test(MAJOR, MINOR)
1602	# -----------------------------
1603	# Internal helper for _BOOST_FIND_COMPILER_TAG.
1604	m4_define([_BOOST_mingw_test],
1605	["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC && \
1606	(defined WIN32 \|\| defined WINNT \|\| defined _WIN32 \|\| defined __WIN32 \
1607	\|\| defined __WIN32__ \|\| defined __WINNT \|\| defined __WINNT__) @ mgw$1$2"])dnl
1608
1609
1610	# _BOOST_FIND_COMPILER_TAG()
1611	# --------------------------
1612	# Internal. When Boost is installed without --layout=system, each library
1613	# filename will hold a suffix that encodes the compiler used during the
1614	# build. The Boost build system seems to call this a `tag'.
1615	AC_DEFUN([_BOOST_FIND_COMPILER_TAG],
1616	[AC_REQUIRE([AC_PROG_CXX])dnl
1617	AC_REQUIRE([AC_CANONICAL_HOST])dnl
1618	AC_CACHE_CHECK([for the toolset name used by Boost for $CXX],
1619	[boost_cv_lib_tag],
1620	[boost_cv_lib_tag=unknown
1621	if test x$boost_cv_inc_path != xno; then
1622	AC_LANG_PUSH([C++])dnl
1623	# The following tests are mostly inspired by boost/config/auto_link.hpp
1624	# The list is sorted to most recent/common to oldest compiler (in order
1625	# to increase the likelihood of finding the right compiler with the
1626	# least number of compilation attempt).
1627	# Beware that some tests are sensible to the order (for instance, we must
1628	# look for MinGW before looking for GCC3).
1629	# I used one compilation test per compiler with a #error to recognize
1630	# each compiler so that it works even when cross-compiling (let me know
1631	# if you know a better approach).
1632	# Known missing tags (known from Boost's tools/build/v2/tools/common.jam):
1633	# como, edg, kcc, bck, mp, sw, tru, xlc
1634	# I'm not sure about my test for `il' (be careful: Intel's ICC pre-defines
1635	# the same defines as GCC's).
1636	for i in \
1637	"defined __clang__ && __clang_major__ == 12 && __clang_minor__ == 0 @ clang120" \
1638	"defined __clang__ && __clang_major__ == 11 && __clang_minor__ == 1 @ clang111" \
1639	"defined __clang__ && __clang_major__ == 11 && __clang_minor__ == 0 @ clang110" \
1640	"defined __clang__ && __clang_major__ == 10 && __clang_minor__ == 0 @ clang100" \
1641	"defined __clang__ && __clang_major__ == 9 && __clang_minor__ == 0 @ clang90" \
1642	"defined __clang__ && __clang_major__ == 8 && __clang_minor__ == 0 @ clang80" \
1643	"defined __clang__ && __clang_major__ == 7 && __clang_minor__ == 0 @ clang70" \
1644	"defined __clang__ && __clang_major__ == 6 && __clang_minor__ == 0 @ clang60" \
1645	"defined __clang__ && __clang_major__ == 5 && __clang_minor__ == 0 @ clang50" \
1646	"defined __clang__ && __clang_major__ == 4 && __clang_minor__ == 0 @ clang40" \
1647	"defined __clang__ && __clang_major__ == 3 && __clang_minor__ == 9 @ clang39" \
1648	"defined __clang__ && __clang_major__ == 3 && __clang_minor__ == 8 @ clang38" \
1649	"defined __clang__ && __clang_major__ == 3 && __clang_minor__ == 7 @ clang37" \
1650	_BOOST_mingw_test(11, 1) \
1651	_BOOST_gcc_test(11, 1) \
1652	_BOOST_mingw_test(10, 3) \
1653	_BOOST_gcc_test(10, 3) \
1654	_BOOST_mingw_test(10, 2) \
1655	_BOOST_gcc_test(10, 2) \
1656	_BOOST_mingw_test(10, 1) \
1657	_BOOST_gcc_test(10, 1) \
1658	_BOOST_mingw_test(9, 4) \
1659	_BOOST_gcc_test(9, 4) \
1660	_BOOST_mingw_test(9, 3) \
1661	_BOOST_gcc_test(9, 3) \
1662	_BOOST_mingw_test(9, 2) \
1663	_BOOST_gcc_test(9, 2) \
1664	_BOOST_mingw_test(9, 1) \
1665	_BOOST_gcc_test(9, 1) \
1666	_BOOST_mingw_test(9, 0) \
1667	_BOOST_gcc_test(9, 0) \
1668	_BOOST_mingw_test(8, 5) \
1669	_BOOST_gcc_test(8, 5) \
1670	_BOOST_mingw_test(8, 4) \
1671	_BOOST_gcc_test(8, 4) \
1672	_BOOST_mingw_test(8, 3) \
1673	_BOOST_gcc_test(8, 3) \
1674	_BOOST_mingw_test(8, 2) \
1675	_BOOST_gcc_test(8, 2) \
1676	_BOOST_mingw_test(8, 1) \
1677	_BOOST_gcc_test(8, 1) \
1678	_BOOST_mingw_test(8, 0) \
1679	_BOOST_gcc_test(8, 0) \
1680	_BOOST_mingw_test(7, 5) \
1681	_BOOST_gcc_test(7, 5) \
1682	_BOOST_mingw_test(7, 4) \
1683	_BOOST_gcc_test(7, 4) \
1684	_BOOST_mingw_test(7, 3) \
1685	_BOOST_gcc_test(7, 3) \
1686	_BOOST_mingw_test(7, 2) \
1687	_BOOST_gcc_test(7, 2) \
1688	_BOOST_mingw_test(7, 1) \
1689	_BOOST_gcc_test(7, 1) \
1690	_BOOST_mingw_test(7, 0) \
1691	_BOOST_gcc_test(7, 0) \
1692	_BOOST_mingw_test(6, 5) \
1693	_BOOST_gcc_test(6, 5) \
1694	_BOOST_mingw_test(6, 4) \
1695	_BOOST_gcc_test(6, 4) \
1696	_BOOST_mingw_test(6, 3) \
1697	_BOOST_gcc_test(6, 3) \
1698	_BOOST_mingw_test(6, 2) \
1699	_BOOST_gcc_test(6, 2) \
1700	_BOOST_mingw_test(6, 1) \
1701	_BOOST_gcc_test(6, 1) \
1702	_BOOST_mingw_test(6, 0) \
1703	_BOOST_gcc_test(6, 0) \
1704	_BOOST_mingw_test(5, 5) \
1705	_BOOST_gcc_test(5, 5) \
1706	_BOOST_mingw_test(5, 4) \
1707	_BOOST_gcc_test(5, 4) \
1708	_BOOST_mingw_test(5, 3) \
1709	_BOOST_gcc_test(5, 3) \
1710	_BOOST_mingw_test(5, 2) \
1711	_BOOST_gcc_test(5, 2) \
1712	_BOOST_mingw_test(5, 1) \
1713	_BOOST_gcc_test(5, 1) \
1714	_BOOST_mingw_test(5, 0) \
1715	_BOOST_gcc_test(5, 0) \
1716	_BOOST_mingw_test(4, 10) \
1717	_BOOST_gcc_test(4, 10) \
1718	_BOOST_mingw_test(4, 9) \
1719	_BOOST_gcc_test(4, 9) \
1720	_BOOST_mingw_test(4, 8) \
1721	_BOOST_gcc_test(4, 8) \
1722	_BOOST_mingw_test(4, 7) \
1723	_BOOST_gcc_test(4, 7) \
1724	_BOOST_mingw_test(4, 6) \
1725	_BOOST_gcc_test(4, 6) \
1726	_BOOST_mingw_test(4, 5) \
1727	_BOOST_gcc_test(4, 5) \
1728	_BOOST_mingw_test(4, 4) \
1729	_BOOST_gcc_test(4, 4) \
1730	_BOOST_mingw_test(4, 3) \
1731	_BOOST_gcc_test(4, 3) \
1732	_BOOST_mingw_test(4, 2) \
1733	_BOOST_gcc_test(4, 2) \
1734	_BOOST_mingw_test(4, 1) \
1735	_BOOST_gcc_test(4, 1) \
1736	_BOOST_mingw_test(4, 0) \
1737	_BOOST_gcc_test(4, 0) \
1738	"defined __GNUC__ && __GNUC__ == 3 && !defined __ICC \
1739	&& (defined WIN32 \|\| defined WINNT \|\| defined _WIN32 \|\| defined __WIN32 \
1740	\|\| defined __WIN32__ \|\| defined __WINNT \|\| defined __WINNT__) @ mgw" \
1741	_BOOST_gcc_test(3, 4) \
1742	_BOOST_gcc_test(3, 3) \
1743	"defined _MSC_VER && _MSC_VER >= 1500 @ vc90" \
1744	"defined _MSC_VER && _MSC_VER == 1400 @ vc80" \
1745	_BOOST_gcc_test(3, 2) \
1746	"defined _MSC_VER && _MSC_VER == 1310 @ vc71" \
1747	_BOOST_gcc_test(3, 1) \
1748	_BOOST_gcc_test(3, 0) \
1749	"defined __BORLANDC__ @ bcb" \
1750	"defined __ICC && (defined __unix \|\| defined __unix__) @ il" \
1751	"defined __ICL @ iw" \
1752	"defined _MSC_VER && _MSC_VER == 1300 @ vc7" \
1753	_BOOST_gcc_test(2, 95) \
1754	"defined __MWERKS__ && __MWERKS__ <= 0x32FF @ cw9" \
1755	"defined _MSC_VER && _MSC_VER < 1300 && !defined UNDER_CE @ vc6" \
1756	"defined _MSC_VER && _MSC_VER < 1300 && defined UNDER_CE @ evc4" \
1757	"defined __MWERKS__ && __MWERKS__ <= 0x31FF @ cw8"
1758	do
1759	boost_tag_test=`expr "X$i" : 'X\([[^@]]*\) @ '`
1760	boost_tag=`expr "X$i" : 'X[[^@]]* @ \(.*\)'`
1761	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1762	#if $boost_tag_test
1763	/* OK */
1764	#else
1765	# error $boost_tag_test
1766	#endif
1767	]])], [boost_cv_lib_tag=$boost_tag; break], [])
1768	done
1769	AC_LANG_POP([C++])dnl
1770	case $boost_cv_lib_tag in #(
1771	# Some newer (>= 1.35?) versions of Boost seem to only use "gcc" as opposed
1772	# to "gcc41" for instance.
1773	-gcc \| '-gcc ') :;; #( Don't re-add -gcc: it's already in there.
1774	gcc*)
1775	boost_tag_x=
1776	case $host_os in #(
1777	darwin*)
1778	if test $boost_major_version -ge 136; then
1779	# The `x' added in r46793 of Boost.
1780	boost_tag_x=x
1781	fi;;
1782	esac
1783	# We can specify multiple tags in this variable because it's used by
1784	# BOOST_FIND_LIB that does a `for tag in -$boost_cv_lib_tag' ...
1785	boost_cv_lib_tag="$boost_tag_x$boost_cv_lib_tag -${boost_tag_x}gcc"
1786	;; #(
1787	unknown)
1788	AC_MSG_WARN([[could not figure out which toolset name to use for $CXX]])
1789	boost_cv_lib_tag=
1790	;;
1791	esac
1792	fi])dnl end of AC_CACHE_CHECK
1793	])# _BOOST_FIND_COMPILER_TAG
1794
1795
1796	# _BOOST_GUESS_WHETHER_TO_USE_MT()
1797	# --------------------------------
1798	# Compile a small test to try to guess whether we should favor MT (Multi
1799	# Thread) flavors of Boost. Sets boost_guess_use_mt accordingly.
1800	AC_DEFUN([_BOOST_GUESS_WHETHER_TO_USE_MT],
1801	[# Check whether we do better use `mt' even though we weren't ask to.
1802	AC_LANG_PUSH([C++])dnl
1803	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1804	#if defined _REENTRANT \|\| defined _MT \|\| defined __MT__
1805	/* use -mt */
1806	#else
1807	# error MT not needed
1808	#endif
1809	]])], [boost_guess_use_mt=:], [boost_guess_use_mt=false])
1810	AC_LANG_POP([C++])dnl
1811	])
1812
1813	# _BOOST_AC_LINK_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
1814	# -------------------------------------------------------------------
1815	# Fork of _AC_LINK_IFELSE that preserves conftest.o across calls. Fragile,
1816	# will break when Autoconf changes its internals. Requires that you manually
1817	# rm -f conftest.$ac_objext in between to really different tests, otherwise
1818	# you will try to link a conftest.o left behind by a previous test.
1819	# Used to aggressively optimize BOOST_FIND_LIB (see the big comment in this
1820	# macro).
1821	#
1822	# Don't use "break" in the actions, as it would short-circuit some code
1823	# this macro runs after the actions.
1824	m4_define([_BOOST_AC_LINK_IFELSE],
1825	[m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
1826	rm -f conftest$ac_exeext
1827	boost_save_ac_ext=$ac_ext
1828	boost_use_source=:
1829	# If we already have a .o, re-use it. We change $ac_ext so that $ac_link
1830	# tries to link the existing object file instead of compiling from source.
1831	test -f conftest.$ac_objext && ac_ext=$ac_objext && boost_use_source=false &&
1832	_AS_ECHO_LOG([re-using the existing conftest.$ac_objext])
1833	AS_IF([_AC_DO_STDERR($ac_link) && {
1834	test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" \|\|
1835	test ! -s conftest.err
1836	} && test -s conftest$ac_exeext && {
1837	test "$cross_compiling" = yes \|\|
1838	$as_executable_p conftest$ac_exeext
1839	dnl FIXME: use AS_TEST_X instead when 2.61 is widespread enough.
1840	}],
1841	[$2],
1842	[if $boost_use_source; then
1843	_AC_MSG_LOG_CONFTEST
1844	fi
1845	$3])
1846	ac_objext=$boost_save_ac_objext
1847	ac_ext=$boost_save_ac_ext
1848	dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization)
1849	dnl information created by the PGI compiler (conftest_ipa8_conftest.oo),
1850	dnl as it would interfere with the next link command.
1851	rm -f core conftest.err conftest_ipa8_conftest.oo \
1852	conftest$ac_exeext m4_ifval([$1], [conftest.$ac_ext])[]dnl
1853	])# _BOOST_AC_LINK_IFELSE
1854
1855	# Local Variables:
1856	# mode: autoconf
1857	# End:

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