source: m4/boost.m4@ a0ddcf

Last change on this file since a0ddcf was a0ddcf, checked in by Frederik Heber <heber@…>, 15 years ago

Replaced *_boost_*.m4 by boost.m4 from tsuna.

  • https://github.com/tsuna/boost.m4/ has a very nice boost m4 macro to check for presence of boost headers and libraries, also setting the rpath correctly.
  • required changes in all Makefile.ams as BOOST_... variable names have changed.
  • Property mode set to 100644
File size: 40.2 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 15
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_MATH()
592# ------------
593# Look for Boost.Math
594# TODO: This library isn't header-only but it comes in multiple different
595# flavors that don't play well with BOOST_FIND_LIB (e.g, libboost_math_c99,
596# libboost_math_c99f, libboost_math_c99l, libboost_math_tr1,
597# libboost_math_tr1f, libboost_math_tr1l). This macro must be fixed to do the
598# right thing anyway.
599BOOST_DEFUN([Math],
600[BOOST_FIND_HEADER([boost/math/special_functions.hpp])])
601
602
603# BOOST_MULTIARRAY()
604# ------------------
605# Look for Boost.MultiArray
606BOOST_DEFUN([MultiArray],
607[BOOST_FIND_HEADER([boost/multi_array.hpp])])
608
609
610# BOOST_NUMERIC_CONVERSION()
611# --------------------------
612# Look for Boost.NumericConversion (policy-based numeric conversion)
613BOOST_DEFUN([Numeric_Conversion],
614[BOOST_FIND_HEADER([boost/numeric/conversion/converter.hpp])
615])# BOOST_NUMERIC_CONVERSION
616
617
618# BOOST_OPTIONAL()
619# ----------------
620# Look for Boost.Optional
621BOOST_DEFUN([Optional],
622[BOOST_FIND_HEADER([boost/optional.hpp])])
623
624
625# BOOST_PREPROCESSOR()
626# --------------------
627# Look for Boost.Preprocessor
628BOOST_DEFUN([Preprocessor],
629[BOOST_FIND_HEADER([boost/preprocessor/repeat.hpp])])
630
631
632# BOOST_PROGRAM_OPTIONS([PREFERRED-RT-OPT])
633# -----------------------------------------
634# Look for Boost.Program_options. For the documentation of PREFERRED-RT-OPT,
635# see the documentation of BOOST_FIND_LIB above.
636BOOST_DEFUN([Program_Options],
637[BOOST_FIND_LIB([program_options], [$1],
638 [boost/program_options.hpp],
639 [boost::program_options::options_description d("test");])
640])# BOOST_PROGRAM_OPTIONS
641
642
643
644# _BOOST_PYTHON_CONFIG(VARIABLE, FLAG)
645# ------------------------------------
646# Save VARIABLE, and define it via `python-config --FLAG`.
647# Substitute BOOST_PYTHON_VARIABLE.
648m4_define([_BOOST_PYTHON_CONFIG],
649[AC_SUBST([BOOST_PYTHON_$1],
650 [`python-config --$2 2>/dev/null`])dnl
651boost_python_save_$1=$$1
652$1="$$1 $BOOST_PYTHON_$1"])
653
654
655# BOOST_PYTHON([PREFERRED-RT-OPT])
656# --------------------------------
657# Look for Boost.Python. For the documentation of PREFERRED-RT-OPT,
658# see the documentation of BOOST_FIND_LIB above.
659BOOST_DEFUN([Python],
660[_BOOST_PYTHON_CONFIG([CPPFLAGS], [includes])
661_BOOST_PYTHON_CONFIG([LDFLAGS], [ldflags])
662_BOOST_PYTHON_CONFIG([LIBS], [libs])
663m4_pattern_allow([^BOOST_PYTHON_MODULE$])dnl
664BOOST_FIND_LIB([python], [$1],
665 [boost/python.hpp],
666 [], [BOOST_PYTHON_MODULE(empty) {}])
667CPPFLAGS=$boost_python_save_CPPFLAGS
668LDFLAGS=$boost_python_save_LDFLAGS
669LIBS=$boost_python_save_LIBS
670])# BOOST_PYTHON
671
672
673# BOOST_REF()
674# -----------
675# Look for Boost.Ref
676BOOST_DEFUN([Ref],
677[BOOST_FIND_HEADER([boost/ref.hpp])])
678
679
680# BOOST_REGEX([PREFERRED-RT-OPT])
681# -------------------------------
682# Look for Boost.Regex. For the documentation of PREFERRED-RT-OPT, see the
683# documentation of BOOST_FIND_LIB above.
684BOOST_DEFUN([Regex],
685[BOOST_FIND_LIB([regex], [$1],
686 [boost/regex.hpp],
687 [boost::regex exp("*"); boost::regex_match("foo", exp);])
688])# BOOST_REGEX
689
690
691# BOOST_SERIALIZATION([PREFERRED-RT-OPT])
692# ---------------------------------------
693# Look for Boost.Serialization. For the documentation of PREFERRED-RT-OPT, see
694# the documentation of BOOST_FIND_LIB above.
695BOOST_DEFUN([Serialization],
696[BOOST_FIND_LIB([serialization], [$1],
697 [boost/archive/text_oarchive.hpp],
698 [std::ostream* o = 0; // Cheap way to get an ostream...
699 boost::archive::text_oarchive t(*o);])
700])# BOOST_SIGNALS
701
702
703# BOOST_SIGNALS([PREFERRED-RT-OPT])
704# ---------------------------------
705# Look for Boost.Signals. For the documentation of PREFERRED-RT-OPT, see the
706# documentation of BOOST_FIND_LIB above.
707BOOST_DEFUN([Signals],
708[BOOST_FIND_LIB([signals], [$1],
709 [boost/signal.hpp],
710 [boost::signal<void ()> s;])
711])# BOOST_SIGNALS
712
713
714# BOOST_SMART_PTR()
715# -----------------
716# Look for Boost.SmartPtr
717BOOST_DEFUN([Smart_Ptr],
718[BOOST_FIND_HEADER([boost/scoped_ptr.hpp])
719BOOST_FIND_HEADER([boost/shared_ptr.hpp])
720])
721
722
723# BOOST_STATICASSERT()
724# --------------------
725# Look for Boost.StaticAssert
726BOOST_DEFUN([StaticAssert],
727[BOOST_FIND_HEADER([boost/static_assert.hpp])])
728
729
730# BOOST_STRING_ALGO()
731# -------------------
732# Look for Boost.StringAlgo
733BOOST_DEFUN([String_Algo],
734[BOOST_FIND_HEADER([boost/algorithm/string.hpp])
735])
736
737
738# BOOST_SYSTEM([PREFERRED-RT-OPT])
739# --------------------------------
740# Look for Boost.System. For the documentation of PREFERRED-RT-OPT, see the
741# documentation of BOOST_FIND_LIB above. This library was introduced in Boost
742# 1.35.0.
743BOOST_DEFUN([System],
744[BOOST_FIND_LIB([system], [$1],
745 [boost/system/error_code.hpp],
746 [boost::system::error_code e; e.clear();])
747])# BOOST_SYSTEM
748
749
750# BOOST_TEST([PREFERRED-RT-OPT])
751# ------------------------------
752# Look for Boost.Test. For the documentation of PREFERRED-RT-OPT, see the
753# documentation of BOOST_FIND_LIB above.
754BOOST_DEFUN([Test],
755[m4_pattern_allow([^BOOST_CHECK$])dnl
756BOOST_FIND_LIB([unit_test_framework], [$1],
757 [boost/test/unit_test.hpp], [BOOST_CHECK(2 == 2);],
758 [using boost::unit_test::test_suite;
759 test_suite* init_unit_test_suite(int argc, char ** argv)
760 { return NULL; }])
761])# BOOST_TEST
762
763
764# BOOST_THREADS([PREFERRED-RT-OPT])
765# ---------------------------------
766# Look for Boost.Thread. For the documentation of PREFERRED-RT-OPT, see the
767# documentation of BOOST_FIND_LIB above.
768# FIXME: Provide an alias "BOOST_THREAD".
769BOOST_DEFUN([Threads],
770[dnl Having the pthread flag is required at least on GCC3 where
771dnl boost/thread.hpp would complain if we try to compile without
772dnl -pthread on GNU/Linux.
773AC_REQUIRE([_BOOST_PTHREAD_FLAG])dnl
774boost_threads_save_LIBS=$LIBS
775boost_threads_save_CPPFLAGS=$CPPFLAGS
776LIBS="$LIBS $boost_cv_pthread_flag"
777# Yes, we *need* to put the -pthread thing in CPPFLAGS because with GCC3,
778# boost/thread.hpp will trigger a #error if -pthread isn't used:
779# boost/config/requires_threads.hpp:47:5: #error "Compiler threading support
780# is not turned on. Please set the correct command line options for
781# threading: -pthread (Linux), -pthreads (Solaris) or -mthreads (Mingw32)"
782CPPFLAGS="$CPPFLAGS $boost_cv_pthread_flag"
783BOOST_FIND_LIB([thread], [$1],
784 [boost/thread.hpp], [boost::thread t; boost::mutex m;])
785BOOST_THREAD_LIBS="$BOOST_THREAD_LIBS $boost_cv_pthread_flag"
786BOOST_CPPFLAGS="$BOOST_CPPFLAGS $boost_cv_pthread_flag"
787LIBS=$boost_threads_save_LIBS
788CPPFLAGS=$boost_threads_save_CPPFLAGS
789])# BOOST_THREADS
790
791
792# BOOST_TOKENIZER()
793# -----------------
794# Look for Boost.Tokenizer
795BOOST_DEFUN([Tokenizer],
796[BOOST_FIND_HEADER([boost/tokenizer.hpp])])
797
798
799# BOOST_TRIBOOL()
800# ---------------
801# Look for Boost.Tribool
802BOOST_DEFUN([Tribool],
803[BOOST_FIND_HEADER([boost/logic/tribool_fwd.hpp])
804BOOST_FIND_HEADER([boost/logic/tribool.hpp])
805])
806
807
808# BOOST_TUPLE()
809# -------------
810# Look for Boost.Tuple
811BOOST_DEFUN([Tuple],
812[BOOST_FIND_HEADER([boost/tuple/tuple.hpp])])
813
814
815# BOOST_TYPETRAITS()
816# --------------------
817# Look for Boost.TypeTraits
818BOOST_DEFUN([TypeTraits],
819[BOOST_FIND_HEADER([boost/type_traits.hpp])])
820
821
822# BOOST_UTILITY()
823# ---------------
824# Look for Boost.Utility (noncopyable, result_of, base-from-member idiom,
825# etc.)
826BOOST_DEFUN([Utility],
827[BOOST_FIND_HEADER([boost/utility.hpp])])
828
829
830# BOOST_VARIANT()
831# ---------------
832# Look for Boost.Variant.
833BOOST_DEFUN([Variant],
834[BOOST_FIND_HEADER([boost/variant/variant_fwd.hpp])
835BOOST_FIND_HEADER([boost/variant.hpp])])
836
837
838# BOOST_WAVE([PREFERRED-RT-OPT])
839# ------------------------------
840# NOTE: If you intend to use Wave/Spirit with thread support, make sure you
841# call BOOST_THREADS first.
842# Look for Boost.Wave. For the documentation of PREFERRED-RT-OPT, see the
843# documentation of BOOST_FIND_LIB above.
844BOOST_DEFUN([Wave],
845[AC_REQUIRE([BOOST_FILESYSTEM])dnl
846AC_REQUIRE([BOOST_DATE_TIME])dnl
847boost_wave_save_LIBS=$LIBS
848boost_wave_save_LDFLAGS=$LDFLAGS
849m4_pattern_allow([^BOOST_((FILE)?SYSTEM|DATE_TIME|THREAD)_(LIBS|LDFLAGS)$])dnl
850LIBS="$LIBS $BOOST_SYSTEM_LIBS $BOOST_FILESYSTEM_LIBS $BOOST_DATE_TIME_LIBS\
851$BOOST_THREAD_LIBS"
852LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS $BOOST_FILESYSTEM_LDFLAGS\
853$BOOST_DATE_TIME_LDFLAGS $BOOST_THREAD_LDFLAGS"
854BOOST_FIND_LIB([wave], [$1],
855 [boost/wave.hpp],
856 [boost::wave::token_id id; get_token_name(id);])
857LIBS=$boost_wave_save_LIBS
858LDFLAGS=$boost_wave_save_LDFLAGS
859])# BOOST_WAVE
860
861
862# BOOST_XPRESSIVE()
863# -----------------
864# Look for Boost.Xpressive (new since 1.36.0).
865BOOST_DEFUN([Xpressive],
866[BOOST_FIND_HEADER([boost/xpressive/xpressive.hpp])])
867
868
869# ----------------- #
870# Internal helpers. #
871# ----------------- #
872
873
874# _BOOST_PTHREAD_FLAG()
875# ---------------------
876# Internal helper for BOOST_THREADS. Based on ACX_PTHREAD:
877# http://autoconf-archive.cryp.to/acx_pthread.html
878AC_DEFUN([_BOOST_PTHREAD_FLAG],
879[AC_REQUIRE([AC_PROG_CXX])dnl
880AC_REQUIRE([AC_CANONICAL_HOST])dnl
881AC_LANG_PUSH([C++])dnl
882AC_CACHE_CHECK([for the flags needed to use pthreads], [boost_cv_pthread_flag],
883[ boost_cv_pthread_flag=
884 # The ordering *is* (sometimes) important. Some notes on the
885 # individual items follow:
886 # (none): in case threads are in libc; should be tried before -Kthread and
887 # other compiler flags to prevent continual compiler warnings
888 # -lpthreads: AIX (must check this before -lpthread)
889 # -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
890 # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
891 # -llthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
892 # -pthread: GNU Linux/GCC (kernel threads), BSD/GCC (userland threads)
893 # -pthreads: Solaris/GCC
894 # -mthreads: MinGW32/GCC, Lynx/GCC
895 # -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
896 # doesn't hurt to check since this sometimes defines pthreads too;
897 # also defines -D_REENTRANT)
898 # ... -mt is also the pthreads flag for HP/aCC
899 # -lpthread: GNU Linux, etc.
900 # --thread-safe: KAI C++
901 case $host_os in #(
902 *solaris*)
903 # On Solaris (at least, for some versions), libc contains stubbed
904 # (non-functional) versions of the pthreads routines, so link-based
905 # tests will erroneously succeed. (We need to link with -pthreads/-mt/
906 # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
907 # a function called by this macro, so we could check for that, but
908 # who knows whether they'll stub that too in a future libc.) So,
909 # we'll just look for -pthreads and -lpthread first:
910 boost_pthread_flags="-pthreads -lpthread -mt -pthread";; #(
911 *)
912 boost_pthread_flags="-lpthreads -Kthread -kthread -llthread -pthread \
913 -pthreads -mthreads -lpthread --thread-safe -mt";;
914 esac
915 # Generate the test file.
916 AC_LANG_CONFTEST([AC_LANG_PROGRAM([#include <pthread.h>],
917 [pthread_t th; pthread_join(th, 0);
918 pthread_attr_init(0); pthread_cleanup_push(0, 0);
919 pthread_create(0,0,0,0); pthread_cleanup_pop(0);])])
920 for boost_pthread_flag in '' $boost_pthread_flags; do
921 boost_pthread_ok=false
922dnl Re-use the test file already generated.
923 boost_pthreads__save_LIBS=$LIBS
924 LIBS="$LIBS $boost_pthread_flag"
925 AC_LINK_IFELSE([],
926 [if grep ".*$boost_pthread_flag" conftest.err; then
927 echo "This flag seems to have triggered warnings" >&AS_MESSAGE_LOG_FD
928 else
929 boost_pthread_ok=:; boost_cv_pthread_flag=$boost_pthread_flag
930 fi])
931 LIBS=$boost_pthreads__save_LIBS
932 $boost_pthread_ok && break
933 done
934])
935AC_LANG_POP([C++])dnl
936])# _BOOST_PTHREAD_FLAG
937
938
939# _BOOST_gcc_test(MAJOR, MINOR)
940# -----------------------------
941# Internal helper for _BOOST_FIND_COMPILER_TAG.
942m4_define([_BOOST_gcc_test],
943["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC @ gcc$1$2"])dnl
944
945
946# _BOOST_FIND_COMPILER_TAG()
947# --------------------------
948# Internal. When Boost is installed without --layout=system, each library
949# filename will hold a suffix that encodes the compiler used during the
950# build. The Boost build system seems to call this a `tag'.
951AC_DEFUN([_BOOST_FIND_COMPILER_TAG],
952[AC_REQUIRE([AC_PROG_CXX])dnl
953AC_REQUIRE([AC_CANONICAL_HOST])dnl
954AC_CACHE_CHECK([for the toolset name used by Boost for $CXX], [boost_cv_lib_tag],
955[boost_cv_lib_tag=unknown
956if test x$boost_cv_inc_path != xno; then
957 AC_LANG_PUSH([C++])dnl
958 # The following tests are mostly inspired by boost/config/auto_link.hpp
959 # The list is sorted to most recent/common to oldest compiler (in order
960 # to increase the likelihood of finding the right compiler with the
961 # least number of compilation attempt).
962 # Beware that some tests are sensible to the order (for instance, we must
963 # look for MinGW before looking for GCC3).
964 # I used one compilation test per compiler with a #error to recognize
965 # each compiler so that it works even when cross-compiling (let me know
966 # if you know a better approach).
967 # Known missing tags (known from Boost's tools/build/v2/tools/common.jam):
968 # como, edg, kcc, bck, mp, sw, tru, xlc
969 # I'm not sure about my test for `il' (be careful: Intel's ICC pre-defines
970 # the same defines as GCC's).
971 for i in \
972 _BOOST_gcc_test(4, 6) \
973 _BOOST_gcc_test(4, 5) \
974 _BOOST_gcc_test(4, 4) \
975 _BOOST_gcc_test(4, 3) \
976 _BOOST_gcc_test(4, 2) \
977 _BOOST_gcc_test(4, 1) \
978 _BOOST_gcc_test(4, 0) \
979 "defined __GNUC__ && __GNUC__ == 3 && !defined __ICC \
980 && (defined WIN32 || defined WINNT || defined _WIN32 || defined __WIN32 \
981 || defined __WIN32__ || defined __WINNT || defined __WINNT__) @ mgw" \
982 _BOOST_gcc_test(3, 4) \
983 _BOOST_gcc_test(3, 3) \
984 "defined _MSC_VER && _MSC_VER >= 1500 @ vc90" \
985 "defined _MSC_VER && _MSC_VER == 1400 @ vc80" \
986 _BOOST_gcc_test(3, 2) \
987 "defined _MSC_VER && _MSC_VER == 1310 @ vc71" \
988 _BOOST_gcc_test(3, 1) \
989 _BOOST_gcc_test(3, 0) \
990 "defined __BORLANDC__ @ bcb" \
991 "defined __ICC && (defined __unix || defined __unix__) @ il" \
992 "defined __ICL @ iw" \
993 "defined _MSC_VER && _MSC_VER == 1300 @ vc7" \
994 _BOOST_gcc_test(2, 95) \
995 "defined __MWERKS__ && __MWERKS__ <= 0x32FF @ cw9" \
996 "defined _MSC_VER && _MSC_VER < 1300 && !defined UNDER_CE @ vc6" \
997 "defined _MSC_VER && _MSC_VER < 1300 && defined UNDER_CE @ evc4" \
998 "defined __MWERKS__ && __MWERKS__ <= 0x31FF @ cw8"
999 do
1000 boost_tag_test=`expr "X$i" : 'X\([[^@]]*\) @ '`
1001 boost_tag=`expr "X$i" : 'X[[^@]]* @ \(.*\)'`
1002 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1003#if $boost_tag_test
1004/* OK */
1005#else
1006# error $boost_tag_test
1007#endif
1008]])], [boost_cv_lib_tag=$boost_tag; break], [])
1009 done
1010AC_LANG_POP([C++])dnl
1011 case $boost_cv_lib_tag in #(
1012 # Some newer (>= 1.35?) versions of Boost seem to only use "gcc" as opposed
1013 # to "gcc41" for instance.
1014 *-gcc | *'-gcc ') :;; #( Don't re-add -gcc: it's already in there.
1015 gcc*)
1016 boost_tag_x=
1017 case $host_os in #(
1018 darwin*)
1019 if test $boost_major_version -ge 136; then
1020 # The `x' added in r46793 of Boost.
1021 boost_tag_x=x
1022 fi;;
1023 esac
1024 # We can specify multiple tags in this variable because it's used by
1025 # BOOST_FIND_LIB that does a `for tag in -$boost_cv_lib_tag' ...
1026 boost_cv_lib_tag="$boost_tag_x$boost_cv_lib_tag -${boost_tag_x}gcc"
1027 ;; #(
1028 unknown)
1029 AC_MSG_WARN([[could not figure out which toolset name to use for $CXX]])
1030 boost_cv_lib_tag=
1031 ;;
1032 esac
1033fi])dnl end of AC_CACHE_CHECK
1034])# _BOOST_FIND_COMPILER_TAG
1035
1036
1037# _BOOST_GUESS_WHETHER_TO_USE_MT()
1038# --------------------------------
1039# Compile a small test to try to guess whether we should favor MT (Multi
1040# Thread) flavors of Boost. Sets boost_guess_use_mt accordingly.
1041AC_DEFUN([_BOOST_GUESS_WHETHER_TO_USE_MT],
1042[# Check whether we do better use `mt' even though we weren't ask to.
1043AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1044#if defined _REENTRANT || defined _MT || defined __MT__
1045/* use -mt */
1046#else
1047# error MT not needed
1048#endif
1049]])], [boost_guess_use_mt=:], [boost_guess_use_mt=false])
1050])
1051
1052# _BOOST_AC_LINK_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
1053# -------------------------------------------------------------------
1054# Fork of _AC_LINK_IFELSE that preserves conftest.o across calls. Fragile,
1055# will break when Autoconf changes its internals. Requires that you manually
1056# rm -f conftest.$ac_objext in between to really different tests, otherwise
1057# you will try to link a conftest.o left behind by a previous test.
1058# Used to aggressively optimize BOOST_FIND_LIB (see the big comment in this
1059# macro).
1060#
1061# Don't use "break" in the actions, as it would short-circuit some code
1062# this macro runs after the actions.
1063m4_define([_BOOST_AC_LINK_IFELSE],
1064[m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
1065rm -f conftest$ac_exeext
1066boost_save_ac_ext=$ac_ext
1067boost_use_source=:
1068# If we already have a .o, re-use it. We change $ac_ext so that $ac_link
1069# tries to link the existing object file instead of compiling from source.
1070test -f conftest.$ac_objext && ac_ext=$ac_objext && boost_use_source=false &&
1071 _AS_ECHO_LOG([re-using the existing conftest.$ac_objext])
1072AS_IF([_AC_DO_STDERR($ac_link) && {
1073 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
1074 test ! -s conftest.err
1075 } && test -s conftest$ac_exeext && {
1076 test "$cross_compiling" = yes ||
1077 $as_executable_p conftest$ac_exeext
1078dnl FIXME: use AS_TEST_X instead when 2.61 is widespread enough.
1079 }],
1080 [$2],
1081 [if $boost_use_source; then
1082 _AC_MSG_LOG_CONFTEST
1083 fi
1084 $3])
1085ac_objext=$boost_save_ac_objext
1086ac_ext=$boost_save_ac_ext
1087dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization)
1088dnl information created by the PGI compiler (conftest_ipa8_conftest.oo),
1089dnl as it would interfere with the next link command.
1090rm -f core conftest.err conftest_ipa8_conftest.oo \
1091 conftest$ac_exeext m4_ifval([$1], [conftest.$ac_ext])[]dnl
1092])# _BOOST_AC_LINK_IFELSE
1093
1094# Local Variables:
1095# mode: autoconf
1096# End:
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