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>
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.
9 # Additional permission under section 7 of the GNU General Public
10 # License, version 3 ("GPLv3"):
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.
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.
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/>.
24 m4_define([_BOOST_SERIAL], [m4_translit([
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
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.
48 m4_pattern_forbid([^_?(BOOST|Boost)_])
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.
56 # SED-PROGRAM is *not* overquoted, as in AC_EGREP_CPP. It is expanded
57 # in double-quotes, so escape your double quotes.
59 # It could be useful to turn this into a macro which extracts the
61 m4_define([_BOOST_SED_CPP],
62 [AC_LANG_PREPROC_REQUIRE()dnl
63 AC_REQUIRE([AC_PROG_SED])dnl
64 AC_LANG_CONFTEST([AC_LANG_SOURCE([[$2]])])
65 AS_IF([dnl eval is necessary to expand ac_cpp.
66 dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
67 dnl Beware of Windows end-of-lines, for instance if we are running
68 dnl some Windows programs under Wine. In that case, boost/version.hpp
69 dnl is certainly using "\r\n", but the regular Unix shell will only
70 dnl strip `\n' with backquotes, not the `\r'. This results in
71 dnl boost_cv_lib_version='1_37\r' for instance, which breaks
73 dnl 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 |
76 $SED -n -e "$1" >conftest.i 2>&1],
84 # BOOST_REQUIRE([VERSION], [ACTION-IF-NOT-FOUND])
85 # -----------------------------------------------
86 # Look for Boost. If version is given, it must either be a literal of the form
87 # "X.Y.Z" where X, Y and Z are integers (the ".Z" part being optional) or a
89 # Defines the value BOOST_CPPFLAGS. This macro only checks for headers with
90 # the required version, it does not check for any of the Boost libraries.
91 # On # success, defines HAVE_BOOST. On failure, calls the optional
92 # ACTION-IF-NOT-FOUND action if one was supplied.
93 # Otherwise aborts with an error message.
94 AC_DEFUN([BOOST_REQUIRE],
95 [AC_REQUIRE([AC_PROG_CXX])dnl
96 AC_REQUIRE([AC_PROG_GREP])dnl
97 echo "$as_me: this is boost.m4[]_BOOST_SERIAL" >&AS_MESSAGE_LOG_FD
101 set x $boost_version_req 0 0 0
104 boost_version_req=`expr "$[1]" '*' 100000 + "$[2]" '*' 100 + "$[3]"`
105 boost_version_req_string=$[1].$[2].$[3]
107 [AS_HELP_STRING([--with-boost=DIR],
108 [prefix of Boost $1 @<:@guess@:>@])])dnl
109 AC_ARG_VAR([BOOST_ROOT],[Location of Boost installation])dnl
110 # If BOOST_ROOT is set and the user has not provided a value to
111 # --with-boost, then treat BOOST_ROOT as if it the user supplied it.
112 if test x"$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=$BOOST_ROOT
117 AC_MSG_NOTICE([Detected BOOST_ROOT=$BOOST_ROOT, but overridden by --with-boost=$with_boost])
120 AC_SUBST([DISTCHECK_CONFIGURE_FLAGS],
121 ["$DISTCHECK_CONFIGURE_FLAGS '--with-boost=$with_boost'"])dnl
122 boost_save_CPPFLAGS=$CPPFLAGS
123 AC_CACHE_CHECK([for Boost headers version >= $boost_version_req_string],
125 [boost_cv_inc_path=no
126 AC_LANG_PUSH([C++])dnl
127 m4_pattern_allow([^BOOST_VERSION$])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
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";;
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.
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 $boost_dir" itself. Entries are whitespace separated.
152 # I didn't indent this loop on purpose (to avoid over-indented code)
153 boost_layout_system_search_list=`cd "$boost_dir" 2>/dev/null \
154 && ls -1 | "${GREP}" '^boost-' | sort -rn -t- -k2 \
156 for boost_inc in $boost_layout_system_search_list
158 if test x"$boost_inc" != x.; then
159 boost_inc="$boost_dir/$boost_inc"
161 boost_inc="$boost_dir" # Uses sentinel in boost_layout_system_search_list
163 if test x"$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 # $boost_inc), make sure the version.hpp exists.
174 # Use test -e as there can be symlinks.
175 test -e "$boost_inc/boost/version.hpp" || continue
176 CPPFLAGS="$CPPFLAGS -I$boost_inc"
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
187 AC_LANG_POP([C++])dnl
189 case $boost_cv_inc_path in #(
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([$boost_errmsg])])
200 AC_SUBST([BOOST_CPPFLAGS], ["-I$boost_cv_inc_path"])dnl
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>
211 boost_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/_.*//;s/ //'`
215 case $boost_major_version in #(
217 AC_MSG_ERROR([invalid value: boost_major_version=$boost_major_version])
221 CPPFLAGS=$boost_save_CPPFLAGS
226 # Add the "--enable-static-boost" configure argument. If this argument is given
227 # on the command line, static versions of the libraries will be looked up.
228 AC_DEFUN([BOOST_STATIC],
229 [AC_ARG_ENABLE([static-boost],
230 [AC_HELP_STRING([--enable-static-boost],
231 [Prefer the static boost libraries over the shared ones [no]])],
232 [enable_static_boost=yes],
233 [enable_static_boost=no])])# BOOST_STATIC
235 # BOOST_FIND_HEADER([HEADER-NAME], [ACTION-IF-NOT-FOUND], [ACTION-IF-FOUND])
236 # --------------------------------------------------------------------------
237 # Wrapper around AC_CHECK_HEADER for Boost headers. Useful to check for
238 # some parts of the Boost library which are only made of headers and don't
239 # require linking (such as Boost.Foreach).
241 # Default ACTION-IF-NOT-FOUND: Fail with a fatal error unless Boost couldn't be
242 # found in the first place, in which case by default a notice is issued to the
243 # user. Presumably if we haven't died already it's because it's OK to not have
244 # Boost, which is why only a notice is issued instead of a hard error.
246 # Default ACTION-IF-FOUND: define the preprocessor symbol HAVE_<HEADER-NAME> in
247 # case of success # (where HEADER-NAME is written LIKE_THIS, e.g.,
248 # HAVE_BOOST_FOREACH_HPP).
249 AC_DEFUN([BOOST_FIND_HEADER],
250 [AC_REQUIRE([BOOST_REQUIRE])dnl
251 if test x"$boost_cv_inc_path" = xno; then
252 m4_default([$2], [AC_MSG_NOTICE([Boost not available, not searching for $1])])
254 AC_LANG_PUSH([C++])dnl
255 boost_save_CPPFLAGS=$CPPFLAGS
256 CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
257 AC_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 $1])])])
261 CPPFLAGS=$boost_save_CPPFLAGS
262 AC_LANG_POP([C++])dnl
264 ])# BOOST_FIND_HEADER
267 # BOOST_FIND_LIB([LIB-NAME], [PREFERRED-RT-OPT], [HEADER-NAME], [CXX-TEST],
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'
276 # Invokes BOOST_FIND_HEADER([HEADER-NAME]) (see above).
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.
288 AC_DEFUN([BOOST_FIND_LIB],
289 [AC_REQUIRE([BOOST_REQUIRE])dnl
290 AC_REQUIRE([_BOOST_FIND_COMPILER_TAG])dnl
291 AC_REQUIRE([BOOST_STATIC])dnl
292 AC_REQUIRE([_BOOST_GUESS_WHETHER_TO_USE_MT])dnl
293 if test x"$boost_cv_inc_path" = xno; then
294 AC_MSG_NOTICE([Boost not available, not searching for the Boost $1 library])
296 dnl The else branch is huge and wasn't intended on purpose.
297 AC_LANG_PUSH([C++])dnl
298 AS_VAR_PUSHDEF([Boost_lib], [boost_cv_lib_$1])dnl
299 AS_VAR_PUSHDEF([Boost_lib_LDFLAGS], [boost_cv_lib_$1_LDFLAGS])dnl
300 AS_VAR_PUSHDEF([Boost_lib_LDPATH], [boost_cv_lib_$1_LDPATH])dnl
301 AS_VAR_PUSHDEF([Boost_lib_LIBS], [boost_cv_lib_$1_LIBS])dnl
302 BOOST_FIND_HEADER([$3])
303 boost_save_CPPFLAGS=$CPPFLAGS
304 CPPFLAGS="$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).
312 AC_CACHE_CHECK([for the Boost $1 library], [Boost_lib],
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;;
319 if test $enable_static_boost = yes; then
320 boost_rtopt="s$boost_rtopt"
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/'`;; #(
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 # $libext is computed by Libtool but let's make sure it's non empty.
335 AC_MSG_ERROR([the libext variable is empty, did you invoke Libtool?])
336 boost_save_ac_objext=$ac_objext
337 # Generate the test file.
338 AC_LANG_CONFTEST([AC_LANG_PROGRAM([#include <$3>
340 dnl Optimization hacks: compiling C++ is slow, especially with Boost. What
341 dnl we're trying to do here is guess the right combination of link flags
342 dnl (LIBS / LDFLAGS) to use a given library. This can take several
343 dnl iterations before it succeeds and is thus *very* slow. So what we do
344 dnl instead is that we compile the code first (and thus get an object file,
345 dnl typically conftest.o). Then we try various combinations of link flags
346 dnl until we succeed to link conftest.o in an executable. The problem is
347 dnl that the various TRY_LINK / COMPILE_IFELSE macros of Autoconf always
348 dnl remove all the temporary files including conftest.o. So the trick here
349 dnl is to temporarily change the value of ac_objext so that conftest.o is
350 dnl preserved accross tests. This is obviously fragile and I will burn in
351 dnl hell for not respecting Autoconf's documented interfaces, but in the
352 dnl mean time, it optimizes the macro by a factor of 5 to 30.
353 dnl Another small optimization: the first argument of AC_COMPILE_IFELSE left
354 dnl empty because the test file is generated only once above (before we
355 dnl 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
361 # Don't bother to ident the 6 nested for loops, only the 2 innermost ones
363 for boost_tag_ in -$boost_cv_lib_tag ''; do
364 for boost_ver_ in -$boost_cv_lib_version ''; do
365 for boost_mt_ in $boost_mt -mt ''; do
366 for boost_rtopt_ in $boost_rtopt '' -d; do
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_
373 # Avoid testing twice the same lib
374 case $boost_failed_libs in #(
375 *@$boost_lib@*) continue;;
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 "$with_boost" C:/Boost/lib /lib*
385 test -e "$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$boost_lib";;
395 boost_save_LIBS=$LIBS
396 LIBS="$Boost_lib_LIBS $LIBS"
397 test x"$boost_ldpath" != x && LDFLAGS="$LDFLAGS -L$boost_ldpath"
398 dnl First argument of AC_LINK_IFELSE left empty because the test file is
399 dnl 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="$boost_ldpath"
410 boost_failed_libs="$boost_failed_libs@$boost_lib@"
418 rm -f conftest.$ac_objext
420 case $Boost_lib in #(
421 no) _AC_MSG_LOG_CONFTEST
422 AC_MSG_ERROR([cannot find the flags to link with Boost $1])
425 AC_SUBST(AS_TR_CPP([BOOST_$1_LDFLAGS]), [$Boost_lib_LDFLAGS])dnl
426 AC_SUBST(AS_TR_CPP([BOOST_$1_LDPATH]), [$Boost_lib_LDPATH])dnl
427 AC_SUBST([BOOST_LDPATH], [$Boost_lib_LDPATH])dnl
428 AC_SUBST(AS_TR_CPP([BOOST_$1_LIBS]), [$Boost_lib_LIBS])dnl
429 CPPFLAGS=$boost_save_CPPFLAGS
430 AS_VAR_POPDEF([Boost_lib])dnl
431 AS_VAR_POPDEF([Boost_lib_LDFLAGS])dnl
432 AS_VAR_POPDEF([Boost_lib_LDPATH])dnl
433 AS_VAR_POPDEF([Boost_lib_LIBS])dnl
434 AC_LANG_POP([C++])dnl
439 # --------------------------------------- #
440 # Checks for the various Boost libraries. #
441 # --------------------------------------- #
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).
447 # BOOST_DEFUN(LIBRARY, CODE)
448 # --------------------------
449 # Define BOOST_<LIBRARY-UPPERCASE> as a macro that runs CODE.
451 # Use indir to avoid the warning on underquoted macro name given to AC_DEFUN.
452 m4_define([BOOST_DEFUN],
453 [m4_indir([AC_DEFUN],
454 m4_toupper([BOOST_$1]),
455 [m4_pushdef([BOOST_Library], [$1])dnl
457 m4_popdef([BOOST_Library])dnl
463 # Look for Boost.Array
465 [BOOST_FIND_HEADER([boost/array.hpp])])
470 # Look for Boost.Asio (new in Boost 1.35).
472 [AC_REQUIRE([BOOST_SYSTEM])dnl
473 BOOST_FIND_HEADER([boost/asio.hpp])])
478 # Look for Boost.Bind
480 [BOOST_FIND_HEADER([boost/bind.hpp])])
485 # Look for Boost.Conversion (cast / lexical_cast)
486 BOOST_DEFUN([Conversion],
487 [BOOST_FIND_HEADER([boost/cast.hpp])
488 BOOST_FIND_HEADER([boost/lexical_cast.hpp])
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.
496 BOOST_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;])
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
509 BOOST_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.
513 if test $boost_major_version -ge 135; then
515 fi # end of the Boost.System check.
516 boost_filesystem_save_LIBS=$LIBS
517 boost_filesystem_save_LDFLAGS=$LDFLAGS
518 m4_pattern_allow([^BOOST_SYSTEM_(LIBS|LDFLAGS)$])dnl
519 LIBS="$LIBS $BOOST_SYSTEM_LIBS"
520 LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS"
521 BOOST_FIND_LIB([filesystem], [$1],
522 [boost/filesystem/path.hpp], [boost::filesystem::path p;])
523 if test $enable_static_boost = yes && test $boost_major_version -ge 135; then
524 AC_SUBST([BOOST_FILESYSTEM_LIBS], ["$BOOST_FILESYSTEM_LIBS $BOOST_SYSTEM_LIBS"])
526 LIBS=$boost_filesystem_save_LIBS
527 LDFLAGS=$boost_filesystem_save_LDFLAGS
533 # Look for Boost.Foreach
534 BOOST_DEFUN([Foreach],
535 [BOOST_FIND_HEADER([boost/foreach.hpp])])
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
545 BOOST_DEFUN([Format],
546 [BOOST_FIND_HEADER([boost/format.hpp])])
551 # Look for Boost.Function
552 BOOST_DEFUN([Function],
553 [BOOST_FIND_HEADER([boost/function.hpp])])
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.
561 [BOOST_FIND_LIB([graph], [$1],
562 [boost/graph/adjacency_list.hpp], [boost::adjacency_list<> g;])
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.
570 BOOST_DEFUN([IOStreams],
571 [BOOST_FIND_LIB([iostreams], [$1],
572 [boost/iostreams/device/file_descriptor.hpp],
573 [boost::iostreams::file_descriptor fd; fd.close();])
579 # Look for Boost.Functional/Hash
581 [BOOST_FIND_HEADER([boost/functional/hash.hpp])])
586 # Look for Boost.Lambda
587 BOOST_DEFUN([Lambda],
588 [BOOST_FIND_HEADER([boost/lambda/lambda.hpp])])
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.
596 [BOOST_FIND_LIB([log], [$1],
597 [boost/log/core/core.hpp],
598 [boost::log::attribute a; a.get_value();])
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.
606 BOOST_DEFUN([Log_Setup],
607 [AC_REQUIRE([BOOST_LOG])dnl
608 BOOST_FIND_LIB([log_setup], [$1],
609 [boost/log/utility/init/from_settings.hpp],
610 [boost::log::basic_settings<char> bs; bs.empty();])
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.
623 [BOOST_FIND_HEADER([boost/math/special_functions.hpp])])
628 # Look for Boost.MultiArray
629 BOOST_DEFUN([MultiArray],
630 [BOOST_FIND_HEADER([boost/multi_array.hpp])])
633 # BOOST_NUMERIC_CONVERSION()
634 # --------------------------
635 # Look for Boost.NumericConversion (policy-based numeric conversion)
636 BOOST_DEFUN([Numeric_Conversion],
637 [BOOST_FIND_HEADER([boost/numeric/conversion/converter.hpp])
638 ])# BOOST_NUMERIC_CONVERSION
643 # Look for Boost.Optional
644 BOOST_DEFUN([Optional],
645 [BOOST_FIND_HEADER([boost/optional.hpp])])
647 # BOOST_PTR_CONTAINER()
649 # Look for Boost.PointerContainer
650 BOOST_DEFUN([Ptr_Container],
651 [BOOST_FIND_HEADER([boost/ptr_container/ptr_vector.hpp])])
653 # BOOST_PREPROCESSOR()
654 # --------------------
655 # Look for Boost.Preprocessor
656 BOOST_DEFUN([Preprocessor],
657 [BOOST_FIND_HEADER([boost/preprocessor/repeat.hpp])])
662 # Look for Boost.Unordered
663 BOOST_DEFUN([Unordered],
664 [BOOST_FIND_HEADER([boost/unordered_map.hpp])])
669 # Look for Boost.Uuid
671 [BOOST_FIND_HEADER([boost/uuid/uuid.hpp])])
674 # BOOST_PROGRAM_OPTIONS([PREFERRED-RT-OPT])
675 # -----------------------------------------
676 # Look for Boost.Program_options. For the documentation of PREFERRED-RT-OPT,
677 # see the documentation of BOOST_FIND_LIB above.
678 BOOST_DEFUN([Program_Options],
679 [BOOST_FIND_LIB([program_options], [$1],
680 [boost/program_options.hpp],
681 [boost::program_options::options_description d("test");])
682 ])# BOOST_PROGRAM_OPTIONS
686 # _BOOST_PYTHON_CONFIG(VARIABLE, FLAG)
687 # ------------------------------------
688 # Save VARIABLE, and define it via `python-config --FLAG`.
689 # Substitute BOOST_PYTHON_VARIABLE.
690 m4_define([_BOOST_PYTHON_CONFIG],
691 [AC_SUBST([BOOST_PYTHON_$1],
692 [`python-config --$2 2>/dev/null`])dnl
693 boost_python_save_$1=$$1
694 $1="$$1 $BOOST_PYTHON_$1"])
697 # BOOST_PYTHON([PREFERRED-RT-OPT])
698 # --------------------------------
699 # Look for Boost.Python. For the documentation of PREFERRED-RT-OPT,
700 # see the documentation of BOOST_FIND_LIB above.
701 BOOST_DEFUN([Python],
702 [_BOOST_PYTHON_CONFIG([CPPFLAGS], [includes])
703 _BOOST_PYTHON_CONFIG([LDFLAGS], [ldflags])
704 _BOOST_PYTHON_CONFIG([LIBS], [libs])
705 m4_pattern_allow([^BOOST_PYTHON_MODULE$])dnl
706 BOOST_FIND_LIB([python], [$1],
708 [], [BOOST_PYTHON_MODULE(empty) {}])
709 CPPFLAGS=$boost_python_save_CPPFLAGS
710 LDFLAGS=$boost_python_save_LDFLAGS
711 LIBS=$boost_python_save_LIBS
719 [BOOST_FIND_HEADER([boost/ref.hpp])])
722 # BOOST_REGEX([PREFERRED-RT-OPT])
723 # -------------------------------
724 # Look for Boost.Regex. For the documentation of PREFERRED-RT-OPT, see the
725 # documentation of BOOST_FIND_LIB above.
727 [BOOST_FIND_LIB([regex], [$1],
729 [boost::regex exp("*"); boost::regex_match("foo", exp);])
733 # BOOST_SERIALIZATION([PREFERRED-RT-OPT])
734 # ---------------------------------------
735 # Look for Boost.Serialization. For the documentation of PREFERRED-RT-OPT, see
736 # the documentation of BOOST_FIND_LIB above.
737 BOOST_DEFUN([Serialization],
738 [BOOST_FIND_LIB([serialization], [$1],
739 [boost/archive/text_oarchive.hpp],
740 [std::ostream* o = 0; // Cheap way to get an ostream...
741 boost::archive::text_oarchive t(*o);])
742 ])# BOOST_SERIALIZATION
745 # BOOST_SIGNALS([PREFERRED-RT-OPT])
746 # ---------------------------------
747 # Look for Boost.Signals. For the documentation of PREFERRED-RT-OPT, see the
748 # documentation of BOOST_FIND_LIB above.
749 BOOST_DEFUN([Signals],
750 [BOOST_FIND_LIB([signals], [$1],
752 [boost::signal<void ()> s;])
758 # Look for Boost.SmartPtr
759 BOOST_DEFUN([Smart_Ptr],
760 [BOOST_FIND_HEADER([boost/scoped_ptr.hpp])
761 BOOST_FIND_HEADER([boost/shared_ptr.hpp])
765 # BOOST_STATICASSERT()
766 # --------------------
767 # Look for Boost.StaticAssert
768 BOOST_DEFUN([StaticAssert],
769 [BOOST_FIND_HEADER([boost/static_assert.hpp])])
772 # BOOST_STRING_ALGO()
773 # -------------------
774 # Look for Boost.StringAlgo
775 BOOST_DEFUN([String_Algo],
776 [BOOST_FIND_HEADER([boost/algorithm/string.hpp])
780 # BOOST_SYSTEM([PREFERRED-RT-OPT])
781 # --------------------------------
782 # Look for Boost.System. For the documentation of PREFERRED-RT-OPT, see the
783 # documentation of BOOST_FIND_LIB above. This library was introduced in Boost
785 BOOST_DEFUN([System],
786 [BOOST_FIND_LIB([system], [$1],
787 [boost/system/error_code.hpp],
788 [boost::system::error_code e; e.clear();])
792 # BOOST_TEST([PREFERRED-RT-OPT])
793 # ------------------------------
794 # Look for Boost.Test. For the documentation of PREFERRED-RT-OPT, see the
795 # documentation of BOOST_FIND_LIB above.
797 [m4_pattern_allow([^BOOST_CHECK$])dnl
798 BOOST_FIND_LIB([unit_test_framework], [$1],
799 [boost/test/unit_test.hpp], [BOOST_CHECK(2 == 2);],
800 [using boost::unit_test::test_suite;
801 test_suite* init_unit_test_suite(int argc, char ** argv)
806 # BOOST_THREADS([PREFERRED-RT-OPT])
807 # ---------------------------------
808 # Look for Boost.Thread. For the documentation of PREFERRED-RT-OPT, see the
809 # documentation of BOOST_FIND_LIB above.
810 # FIXME: Provide an alias "BOOST_THREAD".
811 BOOST_DEFUN([Threads],
812 [dnl Having the pthread flag is required at least on GCC3 where
813 dnl boost/thread.hpp would complain if we try to compile without
814 dnl -pthread on GNU/Linux.
815 AC_REQUIRE([_BOOST_PTHREAD_FLAG])dnl
816 boost_threads_save_LIBS=$LIBS
817 boost_threads_save_CPPFLAGS=$CPPFLAGS
818 LIBS="$LIBS $boost_cv_pthread_flag"
819 # Yes, we *need* to put the -pthread thing in CPPFLAGS because with GCC3,
820 # boost/thread.hpp will trigger a #error if -pthread isn't used:
821 # boost/config/requires_threads.hpp:47:5: #error "Compiler threading support
822 # is not turned on. Please set the correct command line options for
823 # threading: -pthread (Linux), -pthreads (Solaris) or -mthreads (Mingw32)"
824 CPPFLAGS="$CPPFLAGS $boost_cv_pthread_flag"
825 BOOST_FIND_LIB([thread], [$1],
826 [boost/thread.hpp], [boost::thread t; boost::mutex m;])
827 BOOST_THREAD_LIBS="$BOOST_THREAD_LIBS $boost_cv_pthread_flag"
828 BOOST_CPPFLAGS="$BOOST_CPPFLAGS $boost_cv_pthread_flag"
829 LIBS=$boost_threads_save_LIBS
830 CPPFLAGS=$boost_threads_save_CPPFLAGS
836 # Look for Boost.Tokenizer
837 BOOST_DEFUN([Tokenizer],
838 [BOOST_FIND_HEADER([boost/tokenizer.hpp])])
843 # Look for Boost.Tribool
844 BOOST_DEFUN([Tribool],
845 [BOOST_FIND_HEADER([boost/logic/tribool_fwd.hpp])
846 BOOST_FIND_HEADER([boost/logic/tribool.hpp])
852 # Look for Boost.Tuple
854 [BOOST_FIND_HEADER([boost/tuple/tuple.hpp])])
858 # --------------------
859 # Look for Boost.TypeTraits
860 BOOST_DEFUN([TypeTraits],
861 [BOOST_FIND_HEADER([boost/type_traits.hpp])])
866 # Look for Boost.Utility (noncopyable, result_of, base-from-member idiom,
868 BOOST_DEFUN([Utility],
869 [BOOST_FIND_HEADER([boost/utility.hpp])])
874 # Look for Boost.Variant.
875 BOOST_DEFUN([Variant],
876 [BOOST_FIND_HEADER([boost/variant/variant_fwd.hpp])
877 BOOST_FIND_HEADER([boost/variant.hpp])])
880 # BOOST_WAVE([PREFERRED-RT-OPT])
881 # ------------------------------
882 # NOTE: If you intend to use Wave/Spirit with thread support, make sure you
883 # call BOOST_THREADS first.
884 # Look for Boost.Wave. For the documentation of PREFERRED-RT-OPT, see the
885 # documentation of BOOST_FIND_LIB above.
887 [AC_REQUIRE([BOOST_FILESYSTEM])dnl
888 AC_REQUIRE([BOOST_DATE_TIME])dnl
889 boost_wave_save_LIBS=$LIBS
890 boost_wave_save_LDFLAGS=$LDFLAGS
891 m4_pattern_allow([^BOOST_((FILE)?SYSTEM|DATE_TIME|THREAD)_(LIBS|LDFLAGS)$])dnl
892 LIBS="$LIBS $BOOST_SYSTEM_LIBS $BOOST_FILESYSTEM_LIBS $BOOST_DATE_TIME_LIBS\
894 LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS $BOOST_FILESYSTEM_LDFLAGS\
895 $BOOST_DATE_TIME_LDFLAGS $BOOST_THREAD_LDFLAGS"
896 BOOST_FIND_LIB([wave], [$1],
898 [boost::wave::token_id id; get_token_name(id);])
899 LIBS=$boost_wave_save_LIBS
900 LDFLAGS=$boost_wave_save_LDFLAGS
906 # Look for Boost.Xpressive (new since 1.36.0).
907 BOOST_DEFUN([Xpressive],
908 [BOOST_FIND_HEADER([boost/xpressive/xpressive.hpp])])
911 # ----------------- #
912 # Internal helpers. #
913 # ----------------- #
916 # _BOOST_PTHREAD_FLAG()
917 # ---------------------
918 # Internal helper for BOOST_THREADS. Based on ACX_PTHREAD:
919 # http://autoconf-archive.cryp.to/acx_pthread.html
920 AC_DEFUN([_BOOST_PTHREAD_FLAG],
921 [AC_REQUIRE([AC_PROG_CXX])dnl
922 AC_REQUIRE([AC_CANONICAL_HOST])dnl
923 AC_LANG_PUSH([C++])dnl
924 AC_CACHE_CHECK([for the flags needed to use pthreads], [boost_cv_pthread_flag],
925 [ boost_cv_pthread_flag=
926 # The ordering *is* (sometimes) important. Some notes on the
927 # individual items follow:
928 # (none): in case threads are in libc; should be tried before -Kthread and
929 # other compiler flags to prevent continual compiler warnings
930 # -lpthreads: AIX (must check this before -lpthread)
931 # -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
932 # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
933 # -llthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
934 # -pthread: GNU Linux/GCC (kernel threads), BSD/GCC (userland threads)
935 # -pthreads: Solaris/GCC
936 # -mthreads: MinGW32/GCC, Lynx/GCC
937 # -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
938 # doesn't hurt to check since this sometimes defines pthreads too;
939 # also defines -D_REENTRANT)
940 # ... -mt is also the pthreads flag for HP/aCC
941 # -lpthread: GNU Linux, etc.
942 # --thread-safe: KAI C++
945 # On Solaris (at least, for some versions), libc contains stubbed
946 # (non-functional) versions of the pthreads routines, so link-based
947 # tests will erroneously succeed. (We need to link with -pthreads/-mt/
948 # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
949 # a function called by this macro, so we could check for that, but
950 # who knows whether they'll stub that too in a future libc.) So,
951 # we'll just look for -pthreads and -lpthread first:
952 boost_pthread_flags="-pthreads -lpthread -mt -pthread";; #(
954 boost_pthread_flags="-lpthreads -Kthread -kthread -llthread -pthread \
955 -pthreads -mthreads -lpthread --thread-safe -mt";;
957 # Generate the test file.
958 AC_LANG_CONFTEST([AC_LANG_PROGRAM([#include <pthread.h>],
959 [pthread_t th; pthread_join(th, 0);
960 pthread_attr_init(0); pthread_cleanup_push(0, 0);
961 pthread_create(0,0,0,0); pthread_cleanup_pop(0);])])
962 for boost_pthread_flag in '' $boost_pthread_flags; do
963 boost_pthread_ok=false
964 dnl Re-use the test file already generated.
965 boost_pthreads__save_LIBS=$LIBS
966 LIBS="$LIBS $boost_pthread_flag"
968 [if grep ".*$boost_pthread_flag" conftest.err; then
969 echo "This flag seems to have triggered warnings" >&AS_MESSAGE_LOG_FD
971 boost_pthread_ok=:; boost_cv_pthread_flag=$boost_pthread_flag
973 LIBS=$boost_pthreads__save_LIBS
974 $boost_pthread_ok && break
977 AC_LANG_POP([C++])dnl
978 ])# _BOOST_PTHREAD_FLAG
981 # _BOOST_gcc_test(MAJOR, MINOR)
982 # -----------------------------
983 # Internal helper for _BOOST_FIND_COMPILER_TAG.
984 m4_define([_BOOST_gcc_test],
985 ["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC @ gcc$1$2"])dnl
988 # _BOOST_FIND_COMPILER_TAG()
989 # --------------------------
990 # Internal. When Boost is installed without --layout=system, each library
991 # filename will hold a suffix that encodes the compiler used during the
992 # build. The Boost build system seems to call this a `tag'.
993 AC_DEFUN([_BOOST_FIND_COMPILER_TAG],
994 [AC_REQUIRE([AC_PROG_CXX])dnl
995 AC_REQUIRE([AC_CANONICAL_HOST])dnl
996 AC_CACHE_CHECK([for the toolset name used by Boost for $CXX], [boost_cv_lib_tag],
997 [boost_cv_lib_tag=unknown
998 if test x$boost_cv_inc_path != xno; then
999 AC_LANG_PUSH([C++])dnl
1000 # The following tests are mostly inspired by boost/config/auto_link.hpp
1001 # The list is sorted to most recent/common to oldest compiler (in order
1002 # to increase the likelihood of finding the right compiler with the
1003 # least number of compilation attempt).
1004 # Beware that some tests are sensible to the order (for instance, we must
1005 # look for MinGW before looking for GCC3).
1006 # I used one compilation test per compiler with a #error to recognize
1007 # each compiler so that it works even when cross-compiling (let me know
1008 # if you know a better approach).
1009 # Known missing tags (known from Boost's tools/build/v2/tools/common.jam):
1010 # como, edg, kcc, bck, mp, sw, tru, xlc
1011 # I'm not sure about my test for `il' (be careful: Intel's ICC pre-defines
1012 # the same defines as GCC's).
1014 _BOOST_gcc_test(4, 6) \
1015 _BOOST_gcc_test(4, 5) \
1016 _BOOST_gcc_test(4, 4) \
1017 _BOOST_gcc_test(4, 3) \
1018 _BOOST_gcc_test(4, 2) \
1019 _BOOST_gcc_test(4, 1) \
1020 _BOOST_gcc_test(4, 0) \
1021 "defined __GNUC__ && __GNUC__ == 3 && !defined __ICC \
1022 && (defined WIN32 || defined WINNT || defined _WIN32 || defined __WIN32 \
1023 || defined __WIN32__ || defined __WINNT || defined __WINNT__) @ mgw" \
1024 _BOOST_gcc_test(3, 4) \
1025 _BOOST_gcc_test(3, 3) \
1026 "defined _MSC_VER && _MSC_VER >= 1500 @ vc90" \
1027 "defined _MSC_VER && _MSC_VER == 1400 @ vc80" \
1028 _BOOST_gcc_test(3, 2) \
1029 "defined _MSC_VER && _MSC_VER == 1310 @ vc71" \
1030 _BOOST_gcc_test(3, 1) \
1031 _BOOST_gcc_test(3, 0) \
1032 "defined __BORLANDC__ @ bcb" \
1033 "defined __ICC && (defined __unix || defined __unix__) @ il" \
1034 "defined __ICL @ iw" \
1035 "defined _MSC_VER && _MSC_VER == 1300 @ vc7" \
1036 _BOOST_gcc_test(2, 95) \
1037 "defined __MWERKS__ && __MWERKS__ <= 0x32FF @ cw9" \
1038 "defined _MSC_VER && _MSC_VER < 1300 && !defined UNDER_CE @ vc6" \
1039 "defined _MSC_VER && _MSC_VER < 1300 && defined UNDER_CE @ evc4" \
1040 "defined __MWERKS__ && __MWERKS__ <= 0x31FF @ cw8"
1042 boost_tag_test=`expr "X$i" : 'X\([[^@]]*\) @ '`
1043 boost_tag=`expr "X$i" : 'X[[^@]]* @ \(.*\)'`
1044 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1048 # error $boost_tag_test
1050 ]])], [boost_cv_lib_tag=$boost_tag; break], [])
1052 AC_LANG_POP([C++])dnl
1053 case $boost_cv_lib_tag in #(
1054 # Some newer (>= 1.35?) versions of Boost seem to only use "gcc" as opposed
1055 # to "gcc41" for instance.
1056 *-gcc | *'-gcc ') :;; #( Don't re-add -gcc: it's already in there.
1061 if test $boost_major_version -ge 136; then
1062 # The `x' added in r46793 of Boost.
1066 # We can specify multiple tags in this variable because it's used by
1067 # BOOST_FIND_LIB that does a `for tag in -$boost_cv_lib_tag' ...
1068 boost_cv_lib_tag="$boost_tag_x$boost_cv_lib_tag -${boost_tag_x}gcc"
1071 AC_MSG_WARN([[could not figure out which toolset name to use for $CXX]])
1075 fi])dnl end of AC_CACHE_CHECK
1076 ])# _BOOST_FIND_COMPILER_TAG
1079 # _BOOST_GUESS_WHETHER_TO_USE_MT()
1080 # --------------------------------
1081 # Compile a small test to try to guess whether we should favor MT (Multi
1082 # Thread) flavors of Boost. Sets boost_guess_use_mt accordingly.
1083 AC_DEFUN([_BOOST_GUESS_WHETHER_TO_USE_MT],
1084 [# Check whether we do better use `mt' even though we weren't ask to.
1085 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1086 #if defined _REENTRANT || defined _MT || defined __MT__
1089 # error MT not needed
1091 ]])], [boost_guess_use_mt=:], [boost_guess_use_mt=false])
1094 # _BOOST_AC_LINK_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
1095 # -------------------------------------------------------------------
1096 # Fork of _AC_LINK_IFELSE that preserves conftest.o across calls. Fragile,
1097 # will break when Autoconf changes its internals. Requires that you manually
1098 # rm -f conftest.$ac_objext in between to really different tests, otherwise
1099 # you will try to link a conftest.o left behind by a previous test.
1100 # Used to aggressively optimize BOOST_FIND_LIB (see the big comment in this
1103 # Don't use "break" in the actions, as it would short-circuit some code
1104 # this macro runs after the actions.
1105 m4_define([_BOOST_AC_LINK_IFELSE],
1106 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
1107 rm -f conftest$ac_exeext
1108 boost_save_ac_ext=$ac_ext
1110 # If we already have a .o, re-use it. We change $ac_ext so that $ac_link
1111 # tries to link the existing object file instead of compiling from source.
1112 test -f conftest.$ac_objext && ac_ext=$ac_objext && boost_use_source=false &&
1113 _AS_ECHO_LOG([re-using the existing conftest.$ac_objext])
1114 AS_IF([_AC_DO_STDERR($ac_link) && {
1115 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
1116 test ! -s conftest.err
1117 } && test -s conftest$ac_exeext && {
1118 test "$cross_compiling" = yes ||
1119 $as_executable_p conftest$ac_exeext
1120 dnl FIXME: use AS_TEST_X instead when 2.61 is widespread enough.
1123 [if $boost_use_source; then
1124 _AC_MSG_LOG_CONFTEST
1127 ac_objext=$boost_save_ac_objext
1128 ac_ext=$boost_save_ac_ext
1129 dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization)
1130 dnl information created by the PGI compiler (conftest_ipa8_conftest.oo),
1131 dnl as it would interfere with the next link command.
1132 rm -f core conftest.err conftest_ipa8_conftest.oo \
1133 conftest$ac_exeext m4_ifval([$1], [conftest.$ac_ext])[]dnl
1134 ])# _BOOST_AC_LINK_IFELSE