source: m4/boost.m4@ 10006

Last change on this file since 10006 was 10006, checked in by Christoph Mayer, 13 years ago

-new boost.m4

File size: 41.2 KB
Line 
1# boost.m4: Locate Boost headers and libraries for autoconf-based projects.
2# Copyright (C) 2007, 2008, 2009, 2010, 2011 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
24m4_define([_BOOST_SERIAL], [m4_translit([
25# serial 16
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
48m4_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.
61m4_define([_BOOST_SED_CPP],
62[AC_LANG_PREPROC_REQUIRE()dnl
63AC_REQUIRE([AC_PROG_SED])dnl
64AC_LANG_CONFTEST([AC_LANG_SOURCE([[$2]])])
65AS_IF([dnl eval is necessary to expand ac_cpp.
66dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
67dnl Beware of Windows end-of-lines, for instance if we are running
68dnl some Windows programs under Wine. In that case, boost/version.hpp
69dnl is certainly using "\r\n", but the regular Unix shell will only
70dnl strip `\n' with backquotes, not the `\r'. This results in
71dnl boost_cv_lib_version='1_37\r' for instance, which breaks
72dnl everything else.
73dnl Cannot use 'dnl' after [$4] because a trailing dnl may break AC_CACHE_CHECK
74(eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
75 tr -d '\r' |
76 $SED -n -e "$1" >conftest.i 2>&1],
77 [$3],
78 [$4])
79rm -rf conftest*
80])# AC_EGREP_CPP
81
82
83
84# BOOST_REQUIRE([VERSION], [ACTION-IF-NOT-FOUND])
85# -----------------------------------------------
86# Look for Boost. If version is given, it must either be a literal of the form
87# "X.Y.Z" where X, Y and Z are integers (the ".Z" part being optional) or a
88# variable "$var".
89# Defines the value BOOST_CPPFLAGS. This macro only checks for headers with
90# the required version, it does not check for any of the Boost libraries.
91# On # success, defines HAVE_BOOST. On failure, calls the optional
92# ACTION-IF-NOT-FOUND action if one was supplied.
93# Otherwise aborts with an error message.
94AC_DEFUN([BOOST_REQUIRE],
95[AC_REQUIRE([AC_PROG_CXX])dnl
96AC_REQUIRE([AC_PROG_GREP])dnl
97echo "$as_me: this is boost.m4[]_BOOST_SERIAL" >&AS_MESSAGE_LOG_FD
98boost_save_IFS=$IFS
99boost_version_req=$1
100IFS=.
101set x $boost_version_req 0 0 0
102IFS=$boost_save_IFS
103shift
104boost_version_req=`expr "$[1]" '*' 100000 + "$[2]" '*' 100 + "$[3]"`
105boost_version_req_string=$[1].$[2].$[3]
106AC_ARG_WITH([boost],
107 [AS_HELP_STRING([--with-boost=DIR],
108 [prefix of Boost $1 @<:@guess@:>@])])dnl
109AC_ARG_VAR([BOOST_ROOT],[Location of Boost installation])dnl
110# If BOOST_ROOT is set and the user has not provided a value to
111# --with-boost, then treat BOOST_ROOT as if it the user supplied it.
112if test x"$BOOST_ROOT" != x; then
113 if test x"$with_boost" = x; then
114 AC_MSG_NOTICE([Detected BOOST_ROOT; continuing with --with-boost=$BOOST_ROOT])
115 with_boost=$BOOST_ROOT
116 else
117 AC_MSG_NOTICE([Detected BOOST_ROOT=$BOOST_ROOT, but overridden by --with-boost=$with_boost])
118 fi
119fi
120AC_SUBST([DISTCHECK_CONFIGURE_FLAGS],
121 ["$DISTCHECK_CONFIGURE_FLAGS '--with-boost=$with_boost'"])dnl
122boost_save_CPPFLAGS=$CPPFLAGS
123 AC_CACHE_CHECK([for Boost headers version >= $boost_version_req_string],
124 [boost_cv_inc_path],
125 [boost_cv_inc_path=no
126AC_LANG_PUSH([C++])dnl
127m4_pattern_allow([^BOOST_VERSION$])dnl
128 AC_LANG_CONFTEST([AC_LANG_PROGRAM([[#include <boost/version.hpp>
129#if !defined BOOST_VERSION
130# error BOOST_VERSION is not defined
131#elif BOOST_VERSION < $boost_version_req
132# error Boost headers version < $boost_version_req
133#endif
134]])])
135 # If the user provided a value to --with-boost, use it and only it.
136 case $with_boost in #(
137 ''|yes) set x '' /opt/local/include /usr/local/include /opt/include \
138 /usr/include C:/Boost/include;; #(
139 *) set x "$with_boost/include" "$with_boost";;
140 esac
141 shift
142 for boost_dir
143 do
144 # Without --layout=system, Boost (or at least some versions) installs
145 # itself in <prefix>/include/boost-<version>. This inner loop helps to
146 # find headers in such directories.
147 #
148 # Any ${boost_dir}/boost-x_xx directories are searched in reverse version
149 # order followed by ${boost_dir}. The final '.' is a sentinel for
150 # searching $boost_dir" itself. Entries are whitespace separated.
151 #
152 # I didn't indent this loop on purpose (to avoid over-indented code)
153 boost_layout_system_search_list=`cd "$boost_dir" 2>/dev/null \
154 && ls -1 | "${GREP}" '^boost-' | sort -rn -t- -k2 \
155 && echo .`
156 for boost_inc in $boost_layout_system_search_list
157 do
158 if test x"$boost_inc" != x.; then
159 boost_inc="$boost_dir/$boost_inc"
160 else
161 boost_inc="$boost_dir" # Uses sentinel in boost_layout_system_search_list
162 fi
163 if test x"$boost_inc" != x; then
164 # We are going to check whether the version of Boost installed
165 # in $boost_inc is usable by running a compilation that
166 # #includes it. But if we pass a -I/some/path in which Boost
167 # is not installed, the compiler will just skip this -I and
168 # use other locations (either from CPPFLAGS, or from its list
169 # of system include directories). As a result we would use
170 # header installed on the machine instead of the /some/path
171 # specified by the user. So in that precise case (trying
172 # $boost_inc), make sure the version.hpp exists.
173 #
174 # Use test -e as there can be symlinks.
175 test -e "$boost_inc/boost/version.hpp" || continue
176 CPPFLAGS="$CPPFLAGS -I$boost_inc"
177 fi
178 AC_COMPILE_IFELSE([], [boost_cv_inc_path=yes], [boost_cv_version=no])
179 if test x"$boost_cv_inc_path" = xyes; then
180 if test x"$boost_inc" != x; then
181 boost_cv_inc_path=$boost_inc
182 fi
183 break 2
184 fi
185 done
186 done
187AC_LANG_POP([C++])dnl
188 ])
189 case $boost_cv_inc_path in #(
190 no)
191 boost_errmsg="cannot find Boost headers version >= $boost_version_req_string"
192 m4_if([$2], [], [AC_MSG_ERROR([$boost_errmsg])],
193 [AC_MSG_NOTICE([$boost_errmsg])])
194 $2
195 ;;#(
196 yes)
197 BOOST_CPPFLAGS=
198 ;;#(
199 *)
200 AC_SUBST([BOOST_CPPFLAGS], ["-I$boost_cv_inc_path"])dnl
201 ;;
202 esac
203 if test x"$boost_cv_inc_path" != xno; then
204 AC_DEFINE([HAVE_BOOST], [1],
205 [Defined if the requested minimum BOOST version is satisfied])
206 AC_CACHE_CHECK([for Boost's header version],
207 [boost_cv_lib_version],
208 [m4_pattern_allow([^BOOST_LIB_VERSION$])dnl
209 _BOOST_SED_CPP([/^boost-lib-version = /{s///;s/\"//g;p;q;}],
210 [#include <boost/version.hpp>
211boost-lib-version = BOOST_LIB_VERSION],
212 [boost_cv_lib_version=`cat conftest.i`])])
213 # e.g. "134" for 1_34_1 or "135" for 1_35
214 boost_major_version=`echo "$boost_cv_lib_version" | sed 's/_//;s/_.*//'`
215 case $boost_major_version in #(
216 '' | *[[!0-9]]*)
217 AC_MSG_ERROR([invalid value: boost_major_version=$boost_major_version])
218 ;;
219 esac
220fi
221CPPFLAGS=$boost_save_CPPFLAGS
222])# BOOST_REQUIRE
223
224# BOOST_STATIC()
225# --------------
226# Add the "--enable-static-boost" configure argument. If this argument is given
227# on the command line, static versions of the libraries will be looked up.
228AC_DEFUN([BOOST_STATIC],
229 [AC_ARG_ENABLE([static-boost],
230 [AC_HELP_STRING([--enable-static-boost],
231 [Prefer the static boost libraries over the shared ones [no]])],
232 [enable_static_boost=yes],
233 [enable_static_boost=no])])# BOOST_STATIC
234
235# BOOST_FIND_HEADER([HEADER-NAME], [ACTION-IF-NOT-FOUND], [ACTION-IF-FOUND])
236# --------------------------------------------------------------------------
237# Wrapper around AC_CHECK_HEADER for Boost headers. Useful to check for
238# some parts of the Boost library which are only made of headers and don't
239# require linking (such as Boost.Foreach).
240#
241# Default ACTION-IF-NOT-FOUND: Fail with a fatal error unless Boost couldn't be
242# found in the first place, in which case by default a notice is issued to the
243# user. Presumably if we haven't died already it's because it's OK to not have
244# Boost, which is why only a notice is issued instead of a hard error.
245#
246# Default ACTION-IF-FOUND: define the preprocessor symbol HAVE_<HEADER-NAME> in
247# case of success # (where HEADER-NAME is written LIKE_THIS, e.g.,
248# HAVE_BOOST_FOREACH_HPP).
249AC_DEFUN([BOOST_FIND_HEADER],
250[AC_REQUIRE([BOOST_REQUIRE])dnl
251if test x"$boost_cv_inc_path" = xno; then
252 m4_default([$2], [AC_MSG_NOTICE([Boost not available, not searching for $1])])
253else
254AC_LANG_PUSH([C++])dnl
255boost_save_CPPFLAGS=$CPPFLAGS
256CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
257AC_CHECK_HEADER([$1],
258 [m4_default([$3], [AC_DEFINE(AS_TR_CPP([HAVE_$1]), [1],
259 [Define to 1 if you have <$1>])])],
260 [m4_default([$2], [AC_MSG_ERROR([cannot find $1])])])
261CPPFLAGS=$boost_save_CPPFLAGS
262AC_LANG_POP([C++])dnl
263fi
264])# BOOST_FIND_HEADER
265
266
267# BOOST_FIND_LIB([LIB-NAME], [PREFERRED-RT-OPT], [HEADER-NAME], [CXX-TEST],
268# [CXX-PROLOGUE])
269# -------------------------------------------------------------------------
270# Look for the Boost library LIB-NAME (e.g., LIB-NAME = `thread', for
271# libboost_thread). Check that HEADER-NAME works and check that
272# libboost_LIB-NAME can link with the code CXX-TEST. The optional argument
273# CXX-PROLOGUE can be used to include some C++ code before the `main'
274# function.
275#
276# Invokes BOOST_FIND_HEADER([HEADER-NAME]) (see above).
277#
278# Boost libraries typically come compiled with several flavors (with different
279# runtime options) so PREFERRED-RT-OPT is the preferred suffix. A suffix is one
280# or more of the following letters: sgdpn (in that order). s = static
281# runtime, d = debug build, g = debug/diagnostic runtime, p = STLPort build,
282# n = (unsure) STLPort build without iostreams from STLPort (it looks like `n'
283# must always be used along with `p'). Additionally, PREFERRED-RT-OPT can
284# start with `mt-' to indicate that there is a preference for multi-thread
285# builds. Some sample values for PREFERRED-RT-OPT: (nothing), mt, d, mt-d, gdp
286# ... If you want to make sure you have a specific version of Boost
287# (eg, >= 1.33) you *must* invoke BOOST_REQUIRE before this macro.
288AC_DEFUN([BOOST_FIND_LIB],
289[AC_REQUIRE([BOOST_REQUIRE])dnl
290AC_REQUIRE([_BOOST_FIND_COMPILER_TAG])dnl
291AC_REQUIRE([BOOST_STATIC])dnl
292AC_REQUIRE([_BOOST_GUESS_WHETHER_TO_USE_MT])dnl
293if test x"$boost_cv_inc_path" = xno; then
294 AC_MSG_NOTICE([Boost not available, not searching for the Boost $1 library])
295else
296dnl The else branch is huge and wasn't intended on purpose.
297AC_LANG_PUSH([C++])dnl
298AS_VAR_PUSHDEF([Boost_lib], [boost_cv_lib_$1])dnl
299AS_VAR_PUSHDEF([Boost_lib_LDFLAGS], [boost_cv_lib_$1_LDFLAGS])dnl
300AS_VAR_PUSHDEF([Boost_lib_LDPATH], [boost_cv_lib_$1_LDPATH])dnl
301AS_VAR_PUSHDEF([Boost_lib_LIBS], [boost_cv_lib_$1_LIBS])dnl
302BOOST_FIND_HEADER([$3])
303boost_save_CPPFLAGS=$CPPFLAGS
304CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
305# Now let's try to find the library. The algorithm is as follows: first look
306# for a given library name according to the user's PREFERRED-RT-OPT. For each
307# library name, we prefer to use the ones that carry the tag (toolset name).
308# Each library is searched through the various standard paths were Boost is
309# usually installed. If we can't find the standard variants, we try to
310# enforce -mt (for instance on MacOSX, libboost_threads.dylib doesn't exist
311# but there's -obviously- libboost_threads-mt.dylib).
312AC_CACHE_CHECK([for the Boost $1 library], [Boost_lib],
313 [Boost_lib=no
314 case "$2" in #(
315 mt | mt-) boost_mt=-mt; boost_rtopt=;; #(
316 mt* | mt-*) boost_mt=-mt; boost_rtopt=`expr "X$2" : 'Xmt-*\(.*\)'`;; #(
317 *) boost_mt=; boost_rtopt=$2;;
318 esac
319 if test $enable_static_boost = yes; then
320 boost_rtopt="s$boost_rtopt"
321 fi
322 # Find the proper debug variant depending on what we've been asked to find.
323 case $boost_rtopt in #(
324 *d*) boost_rt_d=$boost_rtopt;; #(
325 *[[sgpn]]*) # Insert the `d' at the right place (in between `sg' and `pn')
326 boost_rt_d=`echo "$boost_rtopt" | sed 's/\(s*g*\)\(p*n*\)/\1\2/'`;; #(
327 *) boost_rt_d='-d';;
328 esac
329 # If the PREFERRED-RT-OPT are not empty, prepend a `-'.
330 test -n "$boost_rtopt" && boost_rtopt="-$boost_rtopt"
331 $boost_guess_use_mt && boost_mt=-mt
332 # Look for the abs path the static archive.
333 # $libext is computed by Libtool but let's make sure it's non empty.
334 test -z "$libext" &&
335 AC_MSG_ERROR([the libext variable is empty, did you invoke Libtool?])
336 boost_save_ac_objext=$ac_objext
337 # Generate the test file.
338 AC_LANG_CONFTEST([AC_LANG_PROGRAM([#include <$3>
339$5], [$4])])
340dnl Optimization hacks: compiling C++ is slow, especially with Boost. What
341dnl we're trying to do here is guess the right combination of link flags
342dnl (LIBS / LDFLAGS) to use a given library. This can take several
343dnl iterations before it succeeds and is thus *very* slow. So what we do
344dnl instead is that we compile the code first (and thus get an object file,
345dnl typically conftest.o). Then we try various combinations of link flags
346dnl until we succeed to link conftest.o in an executable. The problem is
347dnl that the various TRY_LINK / COMPILE_IFELSE macros of Autoconf always
348dnl remove all the temporary files including conftest.o. So the trick here
349dnl is to temporarily change the value of ac_objext so that conftest.o is
350dnl preserved accross tests. This is obviously fragile and I will burn in
351dnl hell for not respecting Autoconf's documented interfaces, but in the
352dnl mean time, it optimizes the macro by a factor of 5 to 30.
353dnl Another small optimization: the first argument of AC_COMPILE_IFELSE left
354dnl empty because the test file is generated only once above (before we
355dnl start the for loops).
356 AC_COMPILE_IFELSE([],
357 [ac_objext=do_not_rm_me_plz],
358 [AC_MSG_ERROR([cannot compile a test that uses Boost $1])])
359 ac_objext=$boost_save_ac_objext
360 boost_failed_libs=
361# Don't bother to ident the 6 nested for loops, only the 2 innermost ones
362# matter.
363for boost_tag_ in -$boost_cv_lib_tag ''; do
364for boost_ver_ in -$boost_cv_lib_version ''; do
365for boost_mt_ in $boost_mt -mt ''; do
366for boost_rtopt_ in $boost_rtopt '' -d; do
367 for boost_lib in \
368 boost_$1$boost_tag_$boost_mt_$boost_rtopt_$boost_ver_ \
369 boost_$1$boost_tag_$boost_rtopt_$boost_ver_ \
370 boost_$1$boost_tag_$boost_mt_$boost_ver_ \
371 boost_$1$boost_tag_$boost_ver_
372 do
373 # Avoid testing twice the same lib
374 case $boost_failed_libs in #(
375 *@$boost_lib@*) continue;;
376 esac
377 # If with_boost is empty, we'll search in /lib first, which is not quite
378 # right so instead we'll try to a location based on where the headers are.
379 boost_tmp_lib=$with_boost
380 test x"$with_boost" = x && boost_tmp_lib=${boost_cv_inc_path%/include}
381 for boost_ldpath in "$boost_tmp_lib/lib" '' \
382 /opt/local/lib* /usr/local/lib* /opt/lib* /usr/lib* \
383 "$with_boost" C:/Boost/lib /lib*
384 do
385 test -e "$boost_ldpath" || continue
386 boost_save_LDFLAGS=$LDFLAGS
387 # Are we looking for a static library?
388 case $boost_ldpath:$boost_rtopt_ in #(
389 *?*:*s*) # Yes (Non empty boost_ldpath + s in rt opt)
390 Boost_lib_LIBS="$boost_ldpath/lib$boost_lib.$libext"
391 test -e "$Boost_lib_LIBS" || continue;; #(
392 *) # No: use -lboost_foo to find the shared library.
393 Boost_lib_LIBS="-l$boost_lib";;
394 esac
395 boost_save_LIBS=$LIBS
396 LIBS="$Boost_lib_LIBS $LIBS"
397 test x"$boost_ldpath" != x && LDFLAGS="$LDFLAGS -L$boost_ldpath"
398dnl First argument of AC_LINK_IFELSE left empty because the test file is
399dnl generated only once above (before we start the for loops).
400 _BOOST_AC_LINK_IFELSE([],
401 [Boost_lib=yes], [Boost_lib=no])
402 ac_objext=$boost_save_ac_objext
403 LDFLAGS=$boost_save_LDFLAGS
404 LIBS=$boost_save_LIBS
405 if test x"$Boost_lib" = xyes; then
406 Boost_lib_LDFLAGS="-L$boost_ldpath -Wl,-R$boost_ldpath"
407 Boost_lib_LDPATH="$boost_ldpath"
408 break 6
409 else
410 boost_failed_libs="$boost_failed_libs@$boost_lib@"
411 fi
412 done
413 done
414done
415done
416done
417done
418rm -f conftest.$ac_objext
419])
420case $Boost_lib in #(
421 no) _AC_MSG_LOG_CONFTEST
422 AC_MSG_ERROR([cannot find the flags to link with Boost $1])
423 ;;
424esac
425AC_SUBST(AS_TR_CPP([BOOST_$1_LDFLAGS]), [$Boost_lib_LDFLAGS])dnl
426AC_SUBST(AS_TR_CPP([BOOST_$1_LDPATH]), [$Boost_lib_LDPATH])dnl
427AC_SUBST([BOOST_LDPATH], [$Boost_lib_LDPATH])dnl
428AC_SUBST(AS_TR_CPP([BOOST_$1_LIBS]), [$Boost_lib_LIBS])dnl
429CPPFLAGS=$boost_save_CPPFLAGS
430AS_VAR_POPDEF([Boost_lib])dnl
431AS_VAR_POPDEF([Boost_lib_LDFLAGS])dnl
432AS_VAR_POPDEF([Boost_lib_LDPATH])dnl
433AS_VAR_POPDEF([Boost_lib_LIBS])dnl
434AC_LANG_POP([C++])dnl
435fi
436])# BOOST_FIND_LIB
437
438
439# --------------------------------------- #
440# Checks for the various Boost libraries. #
441# --------------------------------------- #
442
443# List of boost libraries: http://www.boost.org/libs/libraries.htm
444# The page http://beta.boost.org/doc/libs is useful: it gives the first release
445# version of each library (among other things).
446
447# BOOST_DEFUN(LIBRARY, CODE)
448# --------------------------
449# Define BOOST_<LIBRARY-UPPERCASE> as a macro that runs CODE.
450#
451# Use indir to avoid the warning on underquoted macro name given to AC_DEFUN.
452m4_define([BOOST_DEFUN],
453[m4_indir([AC_DEFUN],
454 m4_toupper([BOOST_$1]),
455[m4_pushdef([BOOST_Library], [$1])dnl
456$2
457m4_popdef([BOOST_Library])dnl
458])
459])
460
461# BOOST_ARRAY()
462# -------------
463# Look for Boost.Array
464BOOST_DEFUN([Array],
465[BOOST_FIND_HEADER([boost/array.hpp])])
466
467
468# BOOST_ASIO()
469# ------------
470# Look for Boost.Asio (new in Boost 1.35).
471BOOST_DEFUN([Asio],
472[AC_REQUIRE([BOOST_SYSTEM])dnl
473BOOST_FIND_HEADER([boost/asio.hpp])])
474
475
476# BOOST_BIND()
477# ------------
478# Look for Boost.Bind
479BOOST_DEFUN([Bind],
480[BOOST_FIND_HEADER([boost/bind.hpp])])
481
482
483# BOOST_CONVERSION()
484# ------------------
485# Look for Boost.Conversion (cast / lexical_cast)
486BOOST_DEFUN([Conversion],
487[BOOST_FIND_HEADER([boost/cast.hpp])
488BOOST_FIND_HEADER([boost/lexical_cast.hpp])
489])# BOOST_CONVERSION
490
491
492# BOOST_DATE_TIME([PREFERRED-RT-OPT])
493# -----------------------------------
494# Look for Boost.Date_Time. For the documentation of PREFERRED-RT-OPT, see the
495# documentation of BOOST_FIND_LIB above.
496BOOST_DEFUN([Date_Time],
497[BOOST_FIND_LIB([date_time], [$1],
498 [boost/date_time/posix_time/posix_time.hpp],
499 [boost::posix_time::ptime t;])
500])# BOOST_DATE_TIME
501
502
503# BOOST_FILESYSTEM([PREFERRED-RT-OPT])
504# ------------------------------------
505# Look for Boost.Filesystem. For the documentation of PREFERRED-RT-OPT, see
506# the documentation of BOOST_FIND_LIB above.
507# Do not check for boost/filesystem.hpp because this file was introduced in
508# 1.34.
509BOOST_DEFUN([Filesystem],
510[# Do we have to check for Boost.System? This link-time dependency was
511# added as of 1.35.0. If we have a version <1.35, we must not attempt to
512# find Boost.System as it didn't exist by then.
513if test $boost_major_version -ge 135; then
514BOOST_SYSTEM([$1])
515fi # end of the Boost.System check.
516boost_filesystem_save_LIBS=$LIBS
517boost_filesystem_save_LDFLAGS=$LDFLAGS
518m4_pattern_allow([^BOOST_SYSTEM_(LIBS|LDFLAGS)$])dnl
519LIBS="$LIBS $BOOST_SYSTEM_LIBS"
520LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS"
521BOOST_FIND_LIB([filesystem], [$1],
522 [boost/filesystem/path.hpp], [boost::filesystem::path p;])
523if test $enable_static_boost = yes && test $boost_major_version -ge 135; then
524 AC_SUBST([BOOST_FILESYSTEM_LIBS], ["$BOOST_FILESYSTEM_LIBS $BOOST_SYSTEM_LIBS"])
525fi
526LIBS=$boost_filesystem_save_LIBS
527LDFLAGS=$boost_filesystem_save_LDFLAGS
528])# BOOST_FILESYSTEM
529
530
531# BOOST_FOREACH()
532# ---------------
533# Look for Boost.Foreach
534BOOST_DEFUN([Foreach],
535[BOOST_FIND_HEADER([boost/foreach.hpp])])
536
537
538# BOOST_FORMAT()
539# --------------
540# Look for Boost.Format
541# Note: we can't check for boost/format/format_fwd.hpp because the header isn't
542# standalone. It can't be compiled because it triggers the following error:
543# boost/format/detail/config_macros.hpp:88: error: 'locale' in namespace 'std'
544# does not name a type
545BOOST_DEFUN([Format],
546[BOOST_FIND_HEADER([boost/format.hpp])])
547
548
549# BOOST_FUNCTION()
550# ----------------
551# Look for Boost.Function
552BOOST_DEFUN([Function],
553[BOOST_FIND_HEADER([boost/function.hpp])])
554
555
556# BOOST_GRAPH([PREFERRED-RT-OPT])
557# -------------------------------
558# Look for Boost.Graphs. For the documentation of PREFERRED-RT-OPT, see the
559# documentation of BOOST_FIND_LIB above.
560BOOST_DEFUN([Graph],
561[BOOST_FIND_LIB([graph], [$1],
562 [boost/graph/adjacency_list.hpp], [boost::adjacency_list<> g;])
563])# BOOST_GRAPH
564
565
566# BOOST_IOSTREAMS([PREFERRED-RT-OPT])
567# -----------------------------------
568# Look for Boost.IOStreams. For the documentation of PREFERRED-RT-OPT, see the
569# documentation of BOOST_FIND_LIB above.
570BOOST_DEFUN([IOStreams],
571[BOOST_FIND_LIB([iostreams], [$1],
572 [boost/iostreams/device/file_descriptor.hpp],
573 [boost::iostreams::file_descriptor fd; fd.close();])
574])# BOOST_IOSTREAMS
575
576
577# BOOST_HASH()
578# ------------
579# Look for Boost.Functional/Hash
580BOOST_DEFUN([Hash],
581[BOOST_FIND_HEADER([boost/functional/hash.hpp])])
582
583
584# BOOST_LAMBDA()
585# --------------
586# Look for Boost.Lambda
587BOOST_DEFUN([Lambda],
588[BOOST_FIND_HEADER([boost/lambda/lambda.hpp])])
589
590
591# BOOST_LOG([PREFERRED-RT-OPT])
592# -----------------------------
593# Look for Boost.Log For the documentation of PREFERRED-RT-OPT, see the
594# documentation of BOOST_FIND_LIB above.
595BOOST_DEFUN([Log],
596[BOOST_FIND_LIB([log], [$1],
597 [boost/log/core/core.hpp],
598 [boost::log::attribute a; a.get_value();])
599])# BOOST_LOG
600
601
602# BOOST_LOG_SETUP([PREFERRED-RT-OPT])
603# -----------------------------------
604# Look for Boost.Log For the documentation of PREFERRED-RT-OPT, see the
605# documentation of BOOST_FIND_LIB above.
606BOOST_DEFUN([Log_Setup],
607[AC_REQUIRE([BOOST_LOG])dnl
608BOOST_FIND_LIB([log_setup], [$1],
609 [boost/log/utility/init/from_settings.hpp],
610 [boost::log::basic_settings<char> bs; bs.empty();])
611])# BOOST_LOG_SETUP
612
613
614# BOOST_MATH()
615# ------------
616# Look for Boost.Math
617# TODO: This library isn't header-only but it comes in multiple different
618# flavors that don't play well with BOOST_FIND_LIB (e.g, libboost_math_c99,
619# libboost_math_c99f, libboost_math_c99l, libboost_math_tr1,
620# libboost_math_tr1f, libboost_math_tr1l). This macro must be fixed to do the
621# right thing anyway.
622BOOST_DEFUN([Math],
623[BOOST_FIND_HEADER([boost/math/special_functions.hpp])])
624
625
626# BOOST_MULTIARRAY()
627# ------------------
628# Look for Boost.MultiArray
629BOOST_DEFUN([MultiArray],
630[BOOST_FIND_HEADER([boost/multi_array.hpp])])
631
632
633# BOOST_NUMERIC_CONVERSION()
634# --------------------------
635# Look for Boost.NumericConversion (policy-based numeric conversion)
636BOOST_DEFUN([Numeric_Conversion],
637[BOOST_FIND_HEADER([boost/numeric/conversion/converter.hpp])
638])# BOOST_NUMERIC_CONVERSION
639
640
641# BOOST_OPTIONAL()
642# ----------------
643# Look for Boost.Optional
644BOOST_DEFUN([Optional],
645[BOOST_FIND_HEADER([boost/optional.hpp])])
646
647
648# BOOST_PREPROCESSOR()
649# --------------------
650# Look for Boost.Preprocessor
651BOOST_DEFUN([Preprocessor],
652[BOOST_FIND_HEADER([boost/preprocessor/repeat.hpp])])
653
654
655# BOOST_UNORDERED()
656# -----------------
657# Look for Boost.Unordered
658BOOST_DEFUN([Unordered],
659[BOOST_FIND_HEADER([boost/unordered_map.hpp])])
660
661
662# BOOST_UUID()
663# ------------
664# Look for Boost.Uuid
665BOOST_DEFUN([Uuid],
666[BOOST_FIND_HEADER([boost/uuid/uuid.hpp])])
667
668
669# BOOST_PROGRAM_OPTIONS([PREFERRED-RT-OPT])
670# -----------------------------------------
671# Look for Boost.Program_options. For the documentation of PREFERRED-RT-OPT,
672# see the documentation of BOOST_FIND_LIB above.
673BOOST_DEFUN([Program_Options],
674[BOOST_FIND_LIB([program_options], [$1],
675 [boost/program_options.hpp],
676 [boost::program_options::options_description d("test");])
677])# BOOST_PROGRAM_OPTIONS
678
679
680
681# _BOOST_PYTHON_CONFIG(VARIABLE, FLAG)
682# ------------------------------------
683# Save VARIABLE, and define it via `python-config --FLAG`.
684# Substitute BOOST_PYTHON_VARIABLE.
685m4_define([_BOOST_PYTHON_CONFIG],
686[AC_SUBST([BOOST_PYTHON_$1],
687 [`python-config --$2 2>/dev/null`])dnl
688boost_python_save_$1=$$1
689$1="$$1 $BOOST_PYTHON_$1"])
690
691
692# BOOST_PYTHON([PREFERRED-RT-OPT])
693# --------------------------------
694# Look for Boost.Python. For the documentation of PREFERRED-RT-OPT,
695# see the documentation of BOOST_FIND_LIB above.
696BOOST_DEFUN([Python],
697[_BOOST_PYTHON_CONFIG([CPPFLAGS], [includes])
698_BOOST_PYTHON_CONFIG([LDFLAGS], [ldflags])
699_BOOST_PYTHON_CONFIG([LIBS], [libs])
700m4_pattern_allow([^BOOST_PYTHON_MODULE$])dnl
701BOOST_FIND_LIB([python], [$1],
702 [boost/python.hpp],
703 [], [BOOST_PYTHON_MODULE(empty) {}])
704CPPFLAGS=$boost_python_save_CPPFLAGS
705LDFLAGS=$boost_python_save_LDFLAGS
706LIBS=$boost_python_save_LIBS
707])# BOOST_PYTHON
708
709
710# BOOST_REF()
711# -----------
712# Look for Boost.Ref
713BOOST_DEFUN([Ref],
714[BOOST_FIND_HEADER([boost/ref.hpp])])
715
716
717# BOOST_REGEX([PREFERRED-RT-OPT])
718# -------------------------------
719# Look for Boost.Regex. For the documentation of PREFERRED-RT-OPT, see the
720# documentation of BOOST_FIND_LIB above.
721BOOST_DEFUN([Regex],
722[BOOST_FIND_LIB([regex], [$1],
723 [boost/regex.hpp],
724 [boost::regex exp("*"); boost::regex_match("foo", exp);])
725])# BOOST_REGEX
726
727
728# BOOST_SERIALIZATION([PREFERRED-RT-OPT])
729# ---------------------------------------
730# Look for Boost.Serialization. For the documentation of PREFERRED-RT-OPT, see
731# the documentation of BOOST_FIND_LIB above.
732BOOST_DEFUN([Serialization],
733[BOOST_FIND_LIB([serialization], [$1],
734 [boost/archive/text_oarchive.hpp],
735 [std::ostream* o = 0; // Cheap way to get an ostream...
736 boost::archive::text_oarchive t(*o);])
737])# BOOST_SERIALIZATION
738
739
740# BOOST_SIGNALS([PREFERRED-RT-OPT])
741# ---------------------------------
742# Look for Boost.Signals. For the documentation of PREFERRED-RT-OPT, see the
743# documentation of BOOST_FIND_LIB above.
744BOOST_DEFUN([Signals],
745[BOOST_FIND_LIB([signals], [$1],
746 [boost/signal.hpp],
747 [boost::signal<void ()> s;])
748])# BOOST_SIGNALS
749
750
751# BOOST_SMART_PTR()
752# -----------------
753# Look for Boost.SmartPtr
754BOOST_DEFUN([Smart_Ptr],
755[BOOST_FIND_HEADER([boost/scoped_ptr.hpp])
756BOOST_FIND_HEADER([boost/shared_ptr.hpp])
757])
758
759
760# BOOST_STATICASSERT()
761# --------------------
762# Look for Boost.StaticAssert
763BOOST_DEFUN([StaticAssert],
764[BOOST_FIND_HEADER([boost/static_assert.hpp])])
765
766
767# BOOST_STRING_ALGO()
768# -------------------
769# Look for Boost.StringAlgo
770BOOST_DEFUN([String_Algo],
771[BOOST_FIND_HEADER([boost/algorithm/string.hpp])
772])
773
774
775# BOOST_SYSTEM([PREFERRED-RT-OPT])
776# --------------------------------
777# Look for Boost.System. For the documentation of PREFERRED-RT-OPT, see the
778# documentation of BOOST_FIND_LIB above. This library was introduced in Boost
779# 1.35.0.
780BOOST_DEFUN([System],
781[BOOST_FIND_LIB([system], [$1],
782 [boost/system/error_code.hpp],
783 [boost::system::error_code e; e.clear();])
784])# BOOST_SYSTEM
785
786
787# BOOST_TEST([PREFERRED-RT-OPT])
788# ------------------------------
789# Look for Boost.Test. For the documentation of PREFERRED-RT-OPT, see the
790# documentation of BOOST_FIND_LIB above.
791BOOST_DEFUN([Test],
792[m4_pattern_allow([^BOOST_CHECK$])dnl
793BOOST_FIND_LIB([unit_test_framework], [$1],
794 [boost/test/unit_test.hpp], [BOOST_CHECK(2 == 2);],
795 [using boost::unit_test::test_suite;
796 test_suite* init_unit_test_suite(int argc, char ** argv)
797 { return NULL; }])
798])# BOOST_TEST
799
800
801# BOOST_THREADS([PREFERRED-RT-OPT])
802# ---------------------------------
803# Look for Boost.Thread. For the documentation of PREFERRED-RT-OPT, see the
804# documentation of BOOST_FIND_LIB above.
805# FIXME: Provide an alias "BOOST_THREAD".
806BOOST_DEFUN([Threads],
807[dnl Having the pthread flag is required at least on GCC3 where
808dnl boost/thread.hpp would complain if we try to compile without
809dnl -pthread on GNU/Linux.
810AC_REQUIRE([_BOOST_PTHREAD_FLAG])dnl
811boost_threads_save_LIBS=$LIBS
812boost_threads_save_CPPFLAGS=$CPPFLAGS
813LIBS="$LIBS $boost_cv_pthread_flag"
814# Yes, we *need* to put the -pthread thing in CPPFLAGS because with GCC3,
815# boost/thread.hpp will trigger a #error if -pthread isn't used:
816# boost/config/requires_threads.hpp:47:5: #error "Compiler threading support
817# is not turned on. Please set the correct command line options for
818# threading: -pthread (Linux), -pthreads (Solaris) or -mthreads (Mingw32)"
819CPPFLAGS="$CPPFLAGS $boost_cv_pthread_flag"
820BOOST_FIND_LIB([thread], [$1],
821 [boost/thread.hpp], [boost::thread t; boost::mutex m;])
822BOOST_THREAD_LIBS="$BOOST_THREAD_LIBS $boost_cv_pthread_flag"
823BOOST_CPPFLAGS="$BOOST_CPPFLAGS $boost_cv_pthread_flag"
824LIBS=$boost_threads_save_LIBS
825CPPFLAGS=$boost_threads_save_CPPFLAGS
826])# BOOST_THREADS
827
828
829# BOOST_TOKENIZER()
830# -----------------
831# Look for Boost.Tokenizer
832BOOST_DEFUN([Tokenizer],
833[BOOST_FIND_HEADER([boost/tokenizer.hpp])])
834
835
836# BOOST_TRIBOOL()
837# ---------------
838# Look for Boost.Tribool
839BOOST_DEFUN([Tribool],
840[BOOST_FIND_HEADER([boost/logic/tribool_fwd.hpp])
841BOOST_FIND_HEADER([boost/logic/tribool.hpp])
842])
843
844
845# BOOST_TUPLE()
846# -------------
847# Look for Boost.Tuple
848BOOST_DEFUN([Tuple],
849[BOOST_FIND_HEADER([boost/tuple/tuple.hpp])])
850
851
852# BOOST_TYPETRAITS()
853# --------------------
854# Look for Boost.TypeTraits
855BOOST_DEFUN([TypeTraits],
856[BOOST_FIND_HEADER([boost/type_traits.hpp])])
857
858
859# BOOST_UTILITY()
860# ---------------
861# Look for Boost.Utility (noncopyable, result_of, base-from-member idiom,
862# etc.)
863BOOST_DEFUN([Utility],
864[BOOST_FIND_HEADER([boost/utility.hpp])])
865
866
867# BOOST_VARIANT()
868# ---------------
869# Look for Boost.Variant.
870BOOST_DEFUN([Variant],
871[BOOST_FIND_HEADER([boost/variant/variant_fwd.hpp])
872BOOST_FIND_HEADER([boost/variant.hpp])])
873
874
875# BOOST_WAVE([PREFERRED-RT-OPT])
876# ------------------------------
877# NOTE: If you intend to use Wave/Spirit with thread support, make sure you
878# call BOOST_THREADS first.
879# Look for Boost.Wave. For the documentation of PREFERRED-RT-OPT, see the
880# documentation of BOOST_FIND_LIB above.
881BOOST_DEFUN([Wave],
882[AC_REQUIRE([BOOST_FILESYSTEM])dnl
883AC_REQUIRE([BOOST_DATE_TIME])dnl
884boost_wave_save_LIBS=$LIBS
885boost_wave_save_LDFLAGS=$LDFLAGS
886m4_pattern_allow([^BOOST_((FILE)?SYSTEM|DATE_TIME|THREAD)_(LIBS|LDFLAGS)$])dnl
887LIBS="$LIBS $BOOST_SYSTEM_LIBS $BOOST_FILESYSTEM_LIBS $BOOST_DATE_TIME_LIBS\
888$BOOST_THREAD_LIBS"
889LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS $BOOST_FILESYSTEM_LDFLAGS\
890$BOOST_DATE_TIME_LDFLAGS $BOOST_THREAD_LDFLAGS"
891BOOST_FIND_LIB([wave], [$1],
892 [boost/wave.hpp],
893 [boost::wave::token_id id; get_token_name(id);])
894LIBS=$boost_wave_save_LIBS
895LDFLAGS=$boost_wave_save_LDFLAGS
896])# BOOST_WAVE
897
898
899# BOOST_XPRESSIVE()
900# -----------------
901# Look for Boost.Xpressive (new since 1.36.0).
902BOOST_DEFUN([Xpressive],
903[BOOST_FIND_HEADER([boost/xpressive/xpressive.hpp])])
904
905
906# ----------------- #
907# Internal helpers. #
908# ----------------- #
909
910
911# _BOOST_PTHREAD_FLAG()
912# ---------------------
913# Internal helper for BOOST_THREADS. Based on ACX_PTHREAD:
914# http://autoconf-archive.cryp.to/acx_pthread.html
915AC_DEFUN([_BOOST_PTHREAD_FLAG],
916[AC_REQUIRE([AC_PROG_CXX])dnl
917AC_REQUIRE([AC_CANONICAL_HOST])dnl
918AC_LANG_PUSH([C++])dnl
919AC_CACHE_CHECK([for the flags needed to use pthreads], [boost_cv_pthread_flag],
920[ boost_cv_pthread_flag=
921 # The ordering *is* (sometimes) important. Some notes on the
922 # individual items follow:
923 # (none): in case threads are in libc; should be tried before -Kthread and
924 # other compiler flags to prevent continual compiler warnings
925 # -lpthreads: AIX (must check this before -lpthread)
926 # -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
927 # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
928 # -llthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
929 # -pthread: GNU Linux/GCC (kernel threads), BSD/GCC (userland threads)
930 # -pthreads: Solaris/GCC
931 # -mthreads: MinGW32/GCC, Lynx/GCC
932 # -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
933 # doesn't hurt to check since this sometimes defines pthreads too;
934 # also defines -D_REENTRANT)
935 # ... -mt is also the pthreads flag for HP/aCC
936 # -lpthread: GNU Linux, etc.
937 # --thread-safe: KAI C++
938 case $host_os in #(
939 *solaris*)
940 # On Solaris (at least, for some versions), libc contains stubbed
941 # (non-functional) versions of the pthreads routines, so link-based
942 # tests will erroneously succeed. (We need to link with -pthreads/-mt/
943 # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
944 # a function called by this macro, so we could check for that, but
945 # who knows whether they'll stub that too in a future libc.) So,
946 # we'll just look for -pthreads and -lpthread first:
947 boost_pthread_flags="-pthreads -lpthread -mt -pthread";; #(
948 *)
949 boost_pthread_flags="-lpthreads -Kthread -kthread -llthread -pthread \
950 -pthreads -mthreads -lpthread --thread-safe -mt";;
951 esac
952 # Generate the test file.
953 AC_LANG_CONFTEST([AC_LANG_PROGRAM([#include <pthread.h>],
954 [pthread_t th; pthread_join(th, 0);
955 pthread_attr_init(0); pthread_cleanup_push(0, 0);
956 pthread_create(0,0,0,0); pthread_cleanup_pop(0);])])
957 for boost_pthread_flag in '' $boost_pthread_flags; do
958 boost_pthread_ok=false
959dnl Re-use the test file already generated.
960 boost_pthreads__save_LIBS=$LIBS
961 LIBS="$LIBS $boost_pthread_flag"
962 AC_LINK_IFELSE([],
963 [if grep ".*$boost_pthread_flag" conftest.err; then
964 echo "This flag seems to have triggered warnings" >&AS_MESSAGE_LOG_FD
965 else
966 boost_pthread_ok=:; boost_cv_pthread_flag=$boost_pthread_flag
967 fi])
968 LIBS=$boost_pthreads__save_LIBS
969 $boost_pthread_ok && break
970 done
971])
972AC_LANG_POP([C++])dnl
973])# _BOOST_PTHREAD_FLAG
974
975
976# _BOOST_gcc_test(MAJOR, MINOR)
977# -----------------------------
978# Internal helper for _BOOST_FIND_COMPILER_TAG.
979m4_define([_BOOST_gcc_test],
980["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC @ gcc$1$2"])dnl
981
982
983# _BOOST_FIND_COMPILER_TAG()
984# --------------------------
985# Internal. When Boost is installed without --layout=system, each library
986# filename will hold a suffix that encodes the compiler used during the
987# build. The Boost build system seems to call this a `tag'.
988AC_DEFUN([_BOOST_FIND_COMPILER_TAG],
989[AC_REQUIRE([AC_PROG_CXX])dnl
990AC_REQUIRE([AC_CANONICAL_HOST])dnl
991AC_CACHE_CHECK([for the toolset name used by Boost for $CXX], [boost_cv_lib_tag],
992[boost_cv_lib_tag=unknown
993if test x$boost_cv_inc_path != xno; then
994 AC_LANG_PUSH([C++])dnl
995 # The following tests are mostly inspired by boost/config/auto_link.hpp
996 # The list is sorted to most recent/common to oldest compiler (in order
997 # to increase the likelihood of finding the right compiler with the
998 # least number of compilation attempt).
999 # Beware that some tests are sensible to the order (for instance, we must
1000 # look for MinGW before looking for GCC3).
1001 # I used one compilation test per compiler with a #error to recognize
1002 # each compiler so that it works even when cross-compiling (let me know
1003 # if you know a better approach).
1004 # Known missing tags (known from Boost's tools/build/v2/tools/common.jam):
1005 # como, edg, kcc, bck, mp, sw, tru, xlc
1006 # I'm not sure about my test for `il' (be careful: Intel's ICC pre-defines
1007 # the same defines as GCC's).
1008 for i in \
1009 _BOOST_gcc_test(4, 6) \
1010 _BOOST_gcc_test(4, 5) \
1011 _BOOST_gcc_test(4, 4) \
1012 _BOOST_gcc_test(4, 3) \
1013 _BOOST_gcc_test(4, 2) \
1014 _BOOST_gcc_test(4, 1) \
1015 _BOOST_gcc_test(4, 0) \
1016 "defined __GNUC__ && __GNUC__ == 3 && !defined __ICC \
1017 && (defined WIN32 || defined WINNT || defined _WIN32 || defined __WIN32 \
1018 || defined __WIN32__ || defined __WINNT || defined __WINNT__) @ mgw" \
1019 _BOOST_gcc_test(3, 4) \
1020 _BOOST_gcc_test(3, 3) \
1021 "defined _MSC_VER && _MSC_VER >= 1500 @ vc90" \
1022 "defined _MSC_VER && _MSC_VER == 1400 @ vc80" \
1023 _BOOST_gcc_test(3, 2) \
1024 "defined _MSC_VER && _MSC_VER == 1310 @ vc71" \
1025 _BOOST_gcc_test(3, 1) \
1026 _BOOST_gcc_test(3, 0) \
1027 "defined __BORLANDC__ @ bcb" \
1028 "defined __ICC && (defined __unix || defined __unix__) @ il" \
1029 "defined __ICL @ iw" \
1030 "defined _MSC_VER && _MSC_VER == 1300 @ vc7" \
1031 _BOOST_gcc_test(2, 95) \
1032 "defined __MWERKS__ && __MWERKS__ <= 0x32FF @ cw9" \
1033 "defined _MSC_VER && _MSC_VER < 1300 && !defined UNDER_CE @ vc6" \
1034 "defined _MSC_VER && _MSC_VER < 1300 && defined UNDER_CE @ evc4" \
1035 "defined __MWERKS__ && __MWERKS__ <= 0x31FF @ cw8"
1036 do
1037 boost_tag_test=`expr "X$i" : 'X\([[^@]]*\) @ '`
1038 boost_tag=`expr "X$i" : 'X[[^@]]* @ \(.*\)'`
1039 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1040#if $boost_tag_test
1041/* OK */
1042#else
1043# error $boost_tag_test
1044#endif
1045]])], [boost_cv_lib_tag=$boost_tag; break], [])
1046 done
1047AC_LANG_POP([C++])dnl
1048 case $boost_cv_lib_tag in #(
1049 # Some newer (>= 1.35?) versions of Boost seem to only use "gcc" as opposed
1050 # to "gcc41" for instance.
1051 *-gcc | *'-gcc ') :;; #( Don't re-add -gcc: it's already in there.
1052 gcc*)
1053 boost_tag_x=
1054 case $host_os in #(
1055 darwin*)
1056 if test $boost_major_version -ge 136; then
1057 # The `x' added in r46793 of Boost.
1058 boost_tag_x=x
1059 fi;;
1060 esac
1061 # We can specify multiple tags in this variable because it's used by
1062 # BOOST_FIND_LIB that does a `for tag in -$boost_cv_lib_tag' ...
1063 boost_cv_lib_tag="$boost_tag_x$boost_cv_lib_tag -${boost_tag_x}gcc"
1064 ;; #(
1065 unknown)
1066 AC_MSG_WARN([[could not figure out which toolset name to use for $CXX]])
1067 boost_cv_lib_tag=
1068 ;;
1069 esac
1070fi])dnl end of AC_CACHE_CHECK
1071])# _BOOST_FIND_COMPILER_TAG
1072
1073
1074# _BOOST_GUESS_WHETHER_TO_USE_MT()
1075# --------------------------------
1076# Compile a small test to try to guess whether we should favor MT (Multi
1077# Thread) flavors of Boost. Sets boost_guess_use_mt accordingly.
1078AC_DEFUN([_BOOST_GUESS_WHETHER_TO_USE_MT],
1079[# Check whether we do better use `mt' even though we weren't ask to.
1080AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1081#if defined _REENTRANT || defined _MT || defined __MT__
1082/* use -mt */
1083#else
1084# error MT not needed
1085#endif
1086]])], [boost_guess_use_mt=:], [boost_guess_use_mt=false])
1087])
1088
1089# _BOOST_AC_LINK_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
1090# -------------------------------------------------------------------
1091# Fork of _AC_LINK_IFELSE that preserves conftest.o across calls. Fragile,
1092# will break when Autoconf changes its internals. Requires that you manually
1093# rm -f conftest.$ac_objext in between to really different tests, otherwise
1094# you will try to link a conftest.o left behind by a previous test.
1095# Used to aggressively optimize BOOST_FIND_LIB (see the big comment in this
1096# macro).
1097#
1098# Don't use "break" in the actions, as it would short-circuit some code
1099# this macro runs after the actions.
1100m4_define([_BOOST_AC_LINK_IFELSE],
1101[m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
1102rm -f conftest$ac_exeext
1103boost_save_ac_ext=$ac_ext
1104boost_use_source=:
1105# If we already have a .o, re-use it. We change $ac_ext so that $ac_link
1106# tries to link the existing object file instead of compiling from source.
1107test -f conftest.$ac_objext && ac_ext=$ac_objext && boost_use_source=false &&
1108 _AS_ECHO_LOG([re-using the existing conftest.$ac_objext])
1109AS_IF([_AC_DO_STDERR($ac_link) && {
1110 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
1111 test ! -s conftest.err
1112 } && test -s conftest$ac_exeext && {
1113 test "$cross_compiling" = yes ||
1114 $as_executable_p conftest$ac_exeext
1115dnl FIXME: use AS_TEST_X instead when 2.61 is widespread enough.
1116 }],
1117 [$2],
1118 [if $boost_use_source; then
1119 _AC_MSG_LOG_CONFTEST
1120 fi
1121 $3])
1122ac_objext=$boost_save_ac_objext
1123ac_ext=$boost_save_ac_ext
1124dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization)
1125dnl information created by the PGI compiler (conftest_ipa8_conftest.oo),
1126dnl as it would interfere with the next link command.
1127rm -f core conftest.err conftest_ipa8_conftest.oo \
1128 conftest$ac_exeext m4_ifval([$1], [conftest.$ac_ext])[]dnl
1129])# _BOOST_AC_LINK_IFELSE
1130
1131# Local Variables:
1132# mode: autoconf
1133# End:
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