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