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 25 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 [$4] because a trailing dnl may break AC_CACHE_CHECK 75dnl 76dnl Beware that GCC 5, when expanding macros, may embed # line directives 77dnl a within single line: 78dnl 79dnl # 1 "conftest.cc" 80dnl # 1 "<built-in>" 81dnl # 1 "<command-line>" 82dnl # 1 "conftest.cc" 83dnl # 1 "/opt/local/include/boost/version.hpp" 1 3 84dnl # 2 "conftest.cc" 2 85dnl boost-lib-version = 86dnl # 2 "conftest.cc" 3 87dnl "1_56" 88dnl 89dnl So get rid of the # lines, and glue the remaining ones together. 90(eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD | 91 grep -v '#' | 92 tr -d '\r' | 93 tr -s '\n' ' ' | 94 $SED -n -e "$1" >conftest.i 2>&1], 95 [$3], 96 [$4]) 97rm -rf conftest* 98AC_LANG_POP([C++])dnl 99])# _BOOST_SED_CPP 100 101 102 103# BOOST_REQUIRE([VERSION], [ACTION-IF-NOT-FOUND]) 104# ----------------------------------------------- 105# Look for Boost. If version is given, it must either be a literal of the form 106# "X.Y.Z" where X, Y and Z are integers (the ".Z" part being optional) or a 107# variable "$var". 108# Defines the value BOOST_CPPFLAGS. This macro only checks for headers with 109# the required version, it does not check for any of the Boost libraries. 110# On # success, defines HAVE_BOOST. On failure, calls the optional 111# ACTION-IF-NOT-FOUND action if one was supplied. 112# Otherwise aborts with an error message. 113dnl *aMule* AC_DEFUN_ONCE([BOOST_REQUIRE], 114AC_DEFUN([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] 126dnl *aMule* AC_ARG_WITH([boost], 127dnl *aMule* [AS_HELP_STRING([--with-boost=DIR], 128dnl *aMule* [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 (no) _AC_MSG_LOG_CONFTEST 333 AC_MSG_ERROR([cannot find the flags to link with Boost $1]) 334 ;; 335esac 336AC_SUBST(AS_TR_CPP([BOOST_$1_LDFLAGS]), [$Boost_lib_LDFLAGS])dnl 337AC_SUBST(AS_TR_CPP([BOOST_$1_LDPATH]), [$Boost_lib_LDPATH])dnl 338AC_SUBST([BOOST_LDPATH], [$Boost_lib_LDPATH])dnl 339AC_SUBST(AS_TR_CPP([BOOST_$1_LIBS]), [$Boost_lib_LIBS])dnl 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_BIND() 553# ------------ 554# Look for Boost.Bind. 555BOOST_DEFUN([Bind], 556[BOOST_FIND_HEADER([boost/bind.hpp])]) 557 558 559# BOOST_CHRONO() 560# -------------- 561# Look for Boost.Chrono. 562BOOST_DEFUN([Chrono], 563[# Do we have to check for Boost.System? This link-time dependency was 564# added as of 1.35.0. If we have a version <1.35, we must not attempt to 565# find Boost.System as it didn't exist by then. 566if test $boost_major_version -ge 135; then 567 BOOST_SYSTEM([$1]) 568fi # end of the Boost.System check. 569boost_filesystem_save_LIBS=$LIBS 570boost_filesystem_save_LDFLAGS=$LDFLAGS 571m4_pattern_allow([^BOOST_SYSTEM_(LIBS|LDFLAGS)$])dnl 572LIBS="$LIBS $BOOST_SYSTEM_LIBS" 573LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS" 574BOOST_FIND_LIB([chrono], [$1], 575 [boost/chrono.hpp], 576 [boost::chrono::thread_clock d;]) 577if test $enable_static_boost = yes && test $boost_major_version -ge 135; then 578 BOOST_CHRONO_LIBS="$BOOST_CHRONO_LIBS $BOOST_SYSTEM_LIBS" 579fi 580LIBS=$boost_filesystem_save_LIBS 581LDFLAGS=$boost_filesystem_save_LDFLAGS 582])# BOOST_CHRONO 583 584 585# BOOST_CONTEXT([PREFERRED-RT-OPT]) 586# ----------------------------------- 587# Look for Boost.Context. For the documentation of PREFERRED-RT-OPT, see the 588# documentation of BOOST_FIND_LIB above. 589# 590# * This library was introduced in Boost 1.51.0 591# * The signatures of make_fcontext() and jump_fcontext were changed in 1.56.0 592# * A dependency on boost_thread appears in 1.57.0 593BOOST_DEFUN([Context], 594[boost_context_save_LIBS=$LIBS 595 boost_context_save_LDFLAGS=$LDFLAGS 596if test $boost_major_version -ge 157; then 597 BOOST_THREAD([$1]) 598 m4_pattern_allow([^BOOST_THREAD_(LIBS|LDFLAGS)$])dnl 599 LIBS="$LIBS $BOOST_THREAD_LIBS" 600 LDFLAGS="$LDFLAGS $BOOST_THREAD_LDFLAGS" 601fi 602BOOST_FIND_LIB([context], [$1], 603 [boost/context/all.hpp],[[ 604 605// creates a stack 606void * stack_pointer = new void*[4096]; 607std::size_t const size = sizeof(void*[4096]); 608 609#if BOOST_VERSION <= 105100 610ctx::make_fcontext(&fc, f); 611return ctx::jump_fcontext(&fcm, &fc, 3) == 6; 612 613#else 614 615fc = ctx::make_fcontext(stack_pointer, size, f); 616return ctx::jump_fcontext(&fcm, fc, 3) == 6; 617 618#endif 619 620 621]],[dnl 622 623#include <boost/version.hpp> 624#if BOOST_VERSION <= 105100 625 626namespace ctx = boost::ctx; 627 628static ctx::fcontext_t fcm, fc; 629 630static void f(intptr_t i) { 631 ctx::jump_fcontext(&fc, &fcm, i * 2); 632} 633 634#elif BOOST_VERSION <= 105500 635 636namespace ctx = boost::context; 637 638// context 639static ctx::fcontext_t fcm, *fc; 640 641// context-function 642static void f(intptr_t i) { 643 ctx::jump_fcontext(fc, &fcm, i * 2); 644} 645 646#else 647 648namespace ctx = boost::context; 649 650// context 651static ctx::fcontext_t fcm, fc; 652 653// context-function 654static void f(intptr_t i) { 655 ctx::jump_fcontext(&fc, fcm, i * 2); 656} 657#endif 658]) 659LIBS=$boost_context_save_LIBS 660LDFLAGS=$boost_context_save_LDFLAGS 661])# BOOST_CONTEXT 662 663 664# BOOST_CONVERSION() 665# ------------------ 666# Look for Boost.Conversion (cast / lexical_cast) 667BOOST_DEFUN([Conversion], 668[BOOST_FIND_HEADER([boost/cast.hpp]) 669BOOST_FIND_HEADER([boost/lexical_cast.hpp]) 670])# BOOST_CONVERSION 671 672 673# BOOST_COROUTINE([PREFERRED-RT-OPT]) 674# ----------------------------------- 675# Look for Boost.Coroutine. For the documentation of PREFERRED-RT-OPT, see the 676# documentation of BOOST_FIND_LIB above. This library was introduced in Boost 677# 1.53.0 678BOOST_DEFUN([Coroutine], 679[ 680boost_coroutine_save_LIBS=$LIBS 681boost_coroutine_save_LDFLAGS=$LDFLAGS 682# Link-time dependency from coroutine to context 683BOOST_CONTEXT([$1]) 684# Starting from Boost 1.55 a dependency on Boost.System is added 685if test $boost_major_version -ge 155; then 686 BOOST_SYSTEM([$1]) 687fi 688m4_pattern_allow([^BOOST_(CONTEXT|SYSTEM)_(LIBS|LDFLAGS)]) 689LIBS="$LIBS $BOOST_CONTEXT_LIBS $BOOST_SYSTEM_LIBS" 690LDFLAGS="$LDFLAGS $BOOST_CONTEXT_LDFLAGS" 691 692# in 1.53 coroutine was a header only library 693if test $boost_major_version -eq 153; then 694 BOOST_FIND_HEADER([boost/coroutine/coroutine.hpp]) 695else 696 BOOST_FIND_LIB([coroutine], [$1], 697 [boost/coroutine/coroutine.hpp], 698 [ 699 #include <boost/version.hpp> 700 #if BOOST_VERSION <= 105500 701 boost::coroutines::coroutine<int(int)> coro; coro.get(); 702 #else 703 boost::coroutines::asymmetric_coroutine<int>::pull_type coro; coro.get(); 704 #endif 705 ]) 706fi 707# Link-time dependency from coroutine to context, existed only in 1.53, in 1.54 708# coroutine doesn't use context from its headers but from its library. 709if test $boost_major_version -eq 153 || test $enable_static_boost = yes && test $boost_major_version -ge 154; then 710 BOOST_COROUTINE_LIBS="$BOOST_COROUTINE_LIBS $BOOST_CONTEXT_LIBS" 711 BOOST_COROUTINE_LDFLAGS="$BOOST_COROUTINE_LDFLAGS $BOOST_CONTEXT_LDFLAGS" 712fi 713if test $enable_static_boost = yes && test $boost_major_version -ge 155; then 714 BOOST_COROUTINE_LIBS="$BOOST_COROUTINE_LIBS $BOOST_SYSTEM_LIBS" 715 BOOST_COROUTINE_LDFLAGS="$BOOST_COROUTINE_LDFLAGS $BOOST_SYSTEM_LDFLAGS" 716fi 717LIBS=$boost_coroutine_save_LIBS 718LDFLAGS=$boost_coroutine_save_LDFLAGS 719])# BOOST_COROUTINE 720 721 722# BOOST_CRC() 723# ----------- 724# Look for Boost.CRC 725BOOST_DEFUN([CRC], 726[BOOST_FIND_HEADER([boost/crc.hpp]) 727])# BOOST_CRC 728 729 730# BOOST_DATE_TIME([PREFERRED-RT-OPT]) 731# ----------------------------------- 732# Look for Boost.Date_Time. For the documentation of PREFERRED-RT-OPT, see the 733# documentation of BOOST_FIND_LIB above. 734BOOST_DEFUN([Date_Time], 735[BOOST_FIND_LIB([date_time], [$1], 736 [boost/date_time/posix_time/posix_time.hpp], 737 [boost::posix_time::ptime t;]) 738])# BOOST_DATE_TIME 739 740 741# BOOST_FILESYSTEM([PREFERRED-RT-OPT]) 742# ------------------------------------ 743# Look for Boost.Filesystem. For the documentation of PREFERRED-RT-OPT, see 744# the documentation of BOOST_FIND_LIB above. 745# Do not check for boost/filesystem.hpp because this file was introduced in 746# 1.34. 747BOOST_DEFUN([Filesystem], 748[# Do we have to check for Boost.System? This link-time dependency was 749# added as of 1.35.0. If we have a version <1.35, we must not attempt to 750# find Boost.System as it didn't exist by then. 751if test $boost_major_version -ge 135; then 752 BOOST_SYSTEM([$1]) 753fi # end of the Boost.System check. 754boost_filesystem_save_LIBS=$LIBS 755boost_filesystem_save_LDFLAGS=$LDFLAGS 756m4_pattern_allow([^BOOST_SYSTEM_(LIBS|LDFLAGS)$])dnl 757LIBS="$LIBS $BOOST_SYSTEM_LIBS" 758LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS" 759BOOST_FIND_LIB([filesystem], [$1], 760 [boost/filesystem/path.hpp], [boost::filesystem::path p;]) 761if test $enable_static_boost = yes && test $boost_major_version -ge 135; then 762 BOOST_FILESYSTEM_LIBS="$BOOST_FILESYSTEM_LIBS $BOOST_SYSTEM_LIBS" 763fi 764LIBS=$boost_filesystem_save_LIBS 765LDFLAGS=$boost_filesystem_save_LDFLAGS 766])# BOOST_FILESYSTEM 767 768 769# BOOST_FLYWEIGHT() 770# ----------------- 771# Look for Boost.Flyweight. 772BOOST_DEFUN([Flyweight], 773[dnl There's a hidden dependency on pthreads. 774AC_REQUIRE([_BOOST_PTHREAD_FLAG])dnl 775BOOST_FIND_HEADER([boost/flyweight.hpp]) 776AC_SUBST([BOOST_FLYWEIGHT_LIBS], [$boost_cv_pthread_flag]) 777]) 778 779 780# BOOST_FOREACH() 781# --------------- 782# Look for Boost.Foreach. 783BOOST_DEFUN([Foreach], 784[BOOST_FIND_HEADER([boost/foreach.hpp])]) 785 786 787# BOOST_FORMAT() 788# -------------- 789# Look for Boost.Format. 790# Note: we can't check for boost/format/format_fwd.hpp because the header isn't 791# standalone. It can't be compiled because it triggers the following error: 792# boost/format/detail/config_macros.hpp:88: error: 'locale' in namespace 'std' 793# does not name a type 794BOOST_DEFUN([Format], 795[BOOST_FIND_HEADER([boost/format.hpp])]) 796 797 798# BOOST_FUNCTION() 799# ---------------- 800# Look for Boost.Function 801BOOST_DEFUN([Function], 802[BOOST_FIND_HEADER([boost/function.hpp])]) 803 804 805# BOOST_GEOMETRY() 806# ---------------- 807# Look for Boost.Geometry (new since 1.47.0). 808BOOST_DEFUN([Geometry], 809[BOOST_FIND_HEADER([boost/geometry.hpp]) 810])# BOOST_GEOMETRY 811 812 813# BOOST_GRAPH([PREFERRED-RT-OPT]) 814# ------------------------------- 815# Look for Boost.Graphs. For the documentation of PREFERRED-RT-OPT, see the 816# documentation of BOOST_FIND_LIB above. 817BOOST_DEFUN([Graph], 818[boost_graph_save_LIBS=$LIBS 819boost_graph_save_LDFLAGS=$LDFLAGS 820# Link-time dependency from graph to regex was added as of 1.40.0. 821if test $boost_major_version -ge 140; then 822 BOOST_REGEX([$1]) 823 m4_pattern_allow([^BOOST_REGEX_(LIBS|LDFLAGS)$])dnl 824 LIBS="$LIBS $BOOST_REGEX_LIBS" 825 LDFLAGS="$LDFLAGS $BOOST_REGEX_LDFLAGS" 826fi 827BOOST_FIND_LIB([graph], [$1], 828 [boost/graph/adjacency_list.hpp], [boost::adjacency_list<> g;]) 829LIBS=$boost_graph_save_LIBS 830LDFLAGS=$boost_graph_save_LDFLAGS 831])# BOOST_GRAPH 832 833 834# BOOST_IOSTREAMS([PREFERRED-RT-OPT]) 835# ----------------------------------- 836# Look for Boost.IOStreams. For the documentation of PREFERRED-RT-OPT, see the 837# documentation of BOOST_FIND_LIB above. 838BOOST_DEFUN([IOStreams], 839[BOOST_FIND_LIB([iostreams], [$1], 840 [boost/iostreams/device/file_descriptor.hpp], 841 [boost::iostreams::file_descriptor fd; fd.close();]) 842])# BOOST_IOSTREAMS 843 844 845# BOOST_HASH() 846# ------------ 847# Look for Boost.Functional/Hash 848BOOST_DEFUN([Hash], 849[BOOST_FIND_HEADER([boost/functional/hash.hpp])]) 850 851 852# BOOST_LAMBDA() 853# -------------- 854# Look for Boost.Lambda 855BOOST_DEFUN([Lambda], 856[BOOST_FIND_HEADER([boost/lambda/lambda.hpp])]) 857 858 859# BOOST_LOCALE() 860# -------------- 861# Look for Boost.Locale 862BOOST_DEFUN([Locale], 863[ 864boost_locale_save_LIBS=$LIBS 865boost_locale_save_LDFLAGS=$LDFLAGS 866# require SYSTEM for boost-1.50.0 and up 867if test $boost_major_version -ge 150; then 868 BOOST_SYSTEM([$1]) 869 m4_pattern_allow([^BOOST_SYSTEM_(LIBS|LDFLAGS)$])dnl 870 LIBS="$LIBS $BOOST_SYSTEM_LIBS" 871 LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS" 872fi # end of the Boost.System check. 873BOOST_FIND_LIB([locale], [$1], 874 [boost/locale.hpp], 875 [[boost::locale::generator gen; std::locale::global(gen(""));]]) 876LIBS=$boost_locale_save_LIBS 877LDFLAGS=$boost_locale_save_LDFLAGS 878])# BOOST_LOCALE 879 880# BOOST_LOG([PREFERRED-RT-OPT]) 881# ----------------------------- 882# Look for Boost.Log. For the documentation of PREFERRED-RT-OPT, see the 883# documentation of BOOST_FIND_LIB above. 884BOOST_DEFUN([Log], 885[boost_log_save_LIBS=$LIBS 886boost_log_save_LDFLAGS=$LDFLAGS 887BOOST_SYSTEM([$1]) 888BOOST_FILESYSTEM([$1]) 889BOOST_DATE_TIME([$1]) 890m4_pattern_allow([^BOOST_(SYSTEM|FILESYSTEM|DATE_TIME)_(LIBS|LDFLAGS)$])dnl 891LIBS="$LIBS $BOOST_DATE_TIME_LIBS $BOOST_FILESYSTEM_LIBS $BOOST_SYSTEM_LIBS" 892LDFLAGS="$LDFLAGS $BOOST_DATE_TIME_LDFLAGS $BOOST_FILESYSTEM_LDFLAGS $BOOST_SYSTEM_LDFLAGS" 893BOOST_FIND_LIB([log], [$1], 894 [boost/log/core/core.hpp], 895 [boost::log::attribute a; a.get_value();]) 896LIBS=$boost_log_save_LIBS 897LDFLAGS=$boost_log_save_LDFLAGS 898])# BOOST_LOG 899 900 901# BOOST_LOG_SETUP([PREFERRED-RT-OPT]) 902# ----------------------------------- 903# Look for Boost.Log. For the documentation of PREFERRED-RT-OPT, see the 904# documentation of BOOST_FIND_LIB above. 905BOOST_DEFUN([Log_Setup], 906[boost_log_setup_save_LIBS=$LIBS 907boost_log_setup_save_LDFLAGS=$LDFLAGS 908BOOST_LOG([$1]) 909m4_pattern_allow([^BOOST_LOG_(LIBS|LDFLAGS)$])dnl 910LIBS="$LIBS $BOOST_LOG_LIBS" 911LDFLAGS="$LDFLAGS $BOOST_LOG_LDFLAGS" 912BOOST_FIND_LIB([log_setup], [$1], 913 [boost/log/utility/setup/from_settings.hpp], 914 [boost::log::basic_settings<char> bs; bs.empty();]) 915LIBS=$boost_log_setup_save_LIBS 916LDFLAGS=$boost_log_setup_save_LDFLAGS 917])# BOOST_LOG_SETUP 918 919 920# BOOST_MATH() 921# ------------ 922# Look for Boost.Math 923# TODO: This library isn't header-only but it comes in multiple different 924# flavors that don't play well with BOOST_FIND_LIB (e.g, libboost_math_c99, 925# libboost_math_c99f, libboost_math_c99l, libboost_math_tr1, 926# libboost_math_tr1f, libboost_math_tr1l). This macro must be fixed to do the 927# right thing anyway. 928BOOST_DEFUN([Math], 929[BOOST_FIND_HEADER([boost/math/special_functions.hpp])]) 930 931 932# BOOST_MPI([PREFERRED-RT-OPT]) 933# ------------------------------- 934# Look for Boost MPI. For the documentation of PREFERRED-RT-OPT, see the 935# documentation of BOOST_FIND_LIB above. Uses MPICXX variable if it is 936# set, otherwise tries CXX 937# 938BOOST_DEFUN([MPI], 939[boost_save_CXX=${CXX} 940boost_save_CXXCPP=${CXXCPP} 941if test x"${MPICXX}" != x; then 942 CXX=${MPICXX} 943 CXXCPP="${MPICXX} -E" 944fi 945BOOST_FIND_LIB([mpi], [$1], 946 [boost/mpi.hpp], 947 [int argc = 0; 948 char **argv = 0; 949 boost::mpi::environment env(argc,argv);]) 950CXX=${boost_save_CXX} 951CXXCPP=${boost_save_CXXCPP} 952])# BOOST_MPI 953 954 955# BOOST_MULTIARRAY() 956# ------------------ 957# Look for Boost.MultiArray 958BOOST_DEFUN([MultiArray], 959[BOOST_FIND_HEADER([boost/multi_array.hpp])]) 960 961 962# BOOST_NUMERIC_UBLAS() 963# -------------------------- 964# Look for Boost.NumericUblas (Basic Linear Algebra) 965BOOST_DEFUN([Numeric_Ublas], 966[BOOST_FIND_HEADER([boost/numeric/ublas/vector.hpp]) 967])# BOOST_NUMERIC_UBLAS 968 969 970# BOOST_NUMERIC_CONVERSION() 971# -------------------------- 972# Look for Boost.NumericConversion (policy-based numeric conversion) 973BOOST_DEFUN([Numeric_Conversion], 974[BOOST_FIND_HEADER([boost/numeric/conversion/converter.hpp]) 975])# BOOST_NUMERIC_CONVERSION 976 977 978# BOOST_OPTIONAL() 979# ---------------- 980# Look for Boost.Optional 981BOOST_DEFUN([Optional], 982[BOOST_FIND_HEADER([boost/optional.hpp])]) 983 984 985# BOOST_PREPROCESSOR() 986# -------------------- 987# Look for Boost.Preprocessor 988BOOST_DEFUN([Preprocessor], 989[BOOST_FIND_HEADER([boost/preprocessor/repeat.hpp])]) 990 991 992# BOOST_RANGE() 993# -------------------- 994# Look for Boost.Range 995BOOST_DEFUN([Range], 996[BOOST_FIND_HEADER([boost/range/adaptors.hpp])]) 997 998# BOOST_UNORDERED() 999# ----------------- 1000# Look for Boost.Unordered 1001BOOST_DEFUN([Unordered], 1002[BOOST_FIND_HEADER([boost/unordered_map.hpp])]) 1003 1004 1005# BOOST_UUID() 1006# ------------ 1007# Look for Boost.Uuid 1008BOOST_DEFUN([Uuid], 1009[BOOST_FIND_HEADER([boost/uuid/uuid.hpp])]) 1010 1011 1012# BOOST_PROGRAM_OPTIONS([PREFERRED-RT-OPT]) 1013# ----------------------------------------- 1014# Look for Boost.Program_options. For the documentation of PREFERRED-RT-OPT, 1015# see the documentation of BOOST_FIND_LIB above. 1016BOOST_DEFUN([Program_Options], 1017[BOOST_FIND_LIB([program_options], [$1], 1018 [boost/program_options.hpp], 1019 [boost::program_options::options_description d("test");]) 1020])# BOOST_PROGRAM_OPTIONS 1021 1022 1023 1024# _BOOST_PYTHON_CONFIG(VARIABLE, FLAG) 1025# ------------------------------------ 1026# Save VARIABLE, and define it via `python-config --FLAG`. 1027# Substitute BOOST_PYTHON_VARIABLE. 1028m4_define([_BOOST_PYTHON_CONFIG], 1029[AC_SUBST([BOOST_PYTHON_$1], 1030 [`python-config --$2 2>/dev/null`])dnl 1031boost_python_save_$1=$$1 1032$1="$$1 $BOOST_PYTHON_$1"]) 1033 1034 1035# BOOST_PYTHON([PREFERRED-RT-OPT]) 1036# -------------------------------- 1037# Look for Boost.Python. For the documentation of PREFERRED-RT-OPT, 1038# see the documentation of BOOST_FIND_LIB above. 1039BOOST_DEFUN([Python], 1040[_BOOST_PYTHON_CONFIG([CPPFLAGS], [includes]) 1041_BOOST_PYTHON_CONFIG([LDFLAGS], [ldflags]) 1042_BOOST_PYTHON_CONFIG([LIBS], [libs]) 1043m4_pattern_allow([^BOOST_PYTHON_MODULE$])dnl 1044BOOST_FIND_LIBS([python], [python python3], [$1], 1045 [boost/python.hpp], 1046 [], [BOOST_PYTHON_MODULE(empty) {}]) 1047CPPFLAGS=$boost_python_save_CPPFLAGS 1048LDFLAGS=$boost_python_save_LDFLAGS 1049LIBS=$boost_python_save_LIBS 1050])# BOOST_PYTHON 1051 1052 1053# BOOST_REF() 1054# ----------- 1055# Look for Boost.Ref 1056BOOST_DEFUN([Ref], 1057[BOOST_FIND_HEADER([boost/ref.hpp])]) 1058 1059 1060# BOOST_REGEX([PREFERRED-RT-OPT]) 1061# ------------------------------- 1062# Look for Boost.Regex. For the documentation of PREFERRED-RT-OPT, see the 1063# documentation of BOOST_FIND_LIB above. 1064BOOST_DEFUN([Regex], 1065[BOOST_FIND_LIB([regex], [$1], 1066 [boost/regex.hpp], 1067 [boost::regex exp("*"); boost::regex_match("foo", exp);]) 1068])# BOOST_REGEX 1069 1070 1071# BOOST_SERIALIZATION([PREFERRED-RT-OPT]) 1072# --------------------------------------- 1073# Look for Boost.Serialization. For the documentation of PREFERRED-RT-OPT, see 1074# the documentation of BOOST_FIND_LIB above. 1075BOOST_DEFUN([Serialization], 1076[BOOST_FIND_LIB([serialization], [$1], 1077 [boost/archive/text_oarchive.hpp], 1078 [std::ostream* o = 0; // Cheap way to get an ostream... 1079 boost::archive::text_oarchive t(*o);]) 1080])# BOOST_SERIALIZATION 1081 1082 1083# BOOST_SIGNALS([PREFERRED-RT-OPT]) 1084# --------------------------------- 1085# Look for Boost.Signals. For the documentation of PREFERRED-RT-OPT, see the 1086# documentation of BOOST_FIND_LIB above. 1087BOOST_DEFUN([Signals], 1088[BOOST_FIND_LIB([signals], [$1], 1089 [boost/signal.hpp], 1090 [boost::signal<void ()> s;]) 1091])# BOOST_SIGNALS 1092 1093 1094# BOOST_SIGNALS2() 1095# ---------------- 1096# Look for Boost.Signals2 (new since 1.39.0). 1097BOOST_DEFUN([Signals2], 1098[BOOST_FIND_HEADER([boost/signals2.hpp]) 1099])# BOOST_SIGNALS2 1100 1101 1102# BOOST_SMART_PTR() 1103# ----------------- 1104# Look for Boost.SmartPtr 1105BOOST_DEFUN([Smart_Ptr], 1106[BOOST_FIND_HEADER([boost/scoped_ptr.hpp]) 1107BOOST_FIND_HEADER([boost/shared_ptr.hpp]) 1108]) 1109 1110 1111# BOOST_STATICASSERT() 1112# -------------------- 1113# Look for Boost.StaticAssert 1114BOOST_DEFUN([StaticAssert], 1115[BOOST_FIND_HEADER([boost/static_assert.hpp])]) 1116 1117 1118# BOOST_STRING_ALGO() 1119# ------------------- 1120# Look for Boost.StringAlgo 1121BOOST_DEFUN([String_Algo], 1122[BOOST_FIND_HEADER([boost/algorithm/string.hpp]) 1123]) 1124 1125 1126# BOOST_SYSTEM([PREFERRED-RT-OPT]) 1127# -------------------------------- 1128# Look for Boost.System. For the documentation of PREFERRED-RT-OPT, see the 1129# documentation of BOOST_FIND_LIB above. This library was introduced in Boost 1130# 1.35.0. 1131BOOST_DEFUN([System], 1132[BOOST_FIND_LIB([system], [$1], 1133 [boost/system/error_code.hpp], 1134 [boost::system::error_code e; e.clear();]) 1135])# BOOST_SYSTEM 1136 1137 1138# BOOST_TEST([PREFERRED-RT-OPT]) 1139# ------------------------------ 1140# Look for Boost.Test. For the documentation of PREFERRED-RT-OPT, see the 1141# documentation of BOOST_FIND_LIB above. 1142BOOST_DEFUN([Test], 1143[m4_pattern_allow([^BOOST_CHECK$])dnl 1144BOOST_FIND_LIB([unit_test_framework], [$1], 1145 [boost/test/unit_test.hpp], [BOOST_CHECK(2 == 2);], 1146 [using boost::unit_test::test_suite; 1147 test_suite* init_unit_test_suite(int argc, char ** argv) 1148 { return NULL; }]) 1149])# BOOST_TEST 1150 1151 1152# BOOST_THREAD([PREFERRED-RT-OPT]) 1153# --------------------------------- 1154# Look for Boost.Thread. For the documentation of PREFERRED-RT-OPT, see the 1155# documentation of BOOST_FIND_LIB above. 1156BOOST_DEFUN([Thread], 1157[dnl Having the pthread flag is required at least on GCC3 where 1158dnl boost/thread.hpp would complain if we try to compile without 1159dnl -pthread on GNU/Linux. 1160AC_REQUIRE([_BOOST_PTHREAD_FLAG])dnl 1161boost_thread_save_LIBS=$LIBS 1162boost_thread_save_LDFLAGS=$LDFLAGS 1163boost_thread_save_CPPFLAGS=$CPPFLAGS 1164# Link-time dependency from thread to system was added as of 1.49.0. 1165if test $boost_major_version -ge 149; then 1166BOOST_SYSTEM([$1]) 1167fi # end of the Boost.System check. 1168m4_pattern_allow([^BOOST_SYSTEM_(LIBS|LDFLAGS)$])dnl 1169LIBS="$LIBS $BOOST_SYSTEM_LIBS $boost_cv_pthread_flag" 1170LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS" 1171CPPFLAGS="$CPPFLAGS $boost_cv_pthread_flag" 1172 1173# When compiling for the Windows platform, the threads library is named 1174# differently. This suffix doesn't exist in new versions of Boost, or 1175# possibly new versions of GCC on mingw I am assuming it's Boost's change for 1176# now and I am setting version to 1.48, for lack of knowledge as to when this 1177# change occurred. 1178if test $boost_major_version -lt 148; then 1179 case $host_os in 1180 (*mingw*) boost_thread_lib_ext=_win32;; 1181 esac 1182fi 1183BOOST_FIND_LIBS([thread], [thread$boost_thread_lib_ext], 1184 [$1], 1185 [boost/thread.hpp], [boost::thread t; boost::mutex m;]) 1186 1187case $host_os in 1188 (*mingw*) boost_thread_w32_socket_link=-lws2_32;; 1189esac 1190 1191BOOST_THREAD_LIBS="$BOOST_THREAD_LIBS $BOOST_SYSTEM_LIBS $boost_cv_pthread_flag $boost_thread_w32_socket_link" 1192BOOST_THREAD_LDFLAGS="$BOOST_SYSTEM_LDFLAGS" 1193BOOST_CPPFLAGS="$BOOST_CPPFLAGS $boost_cv_pthread_flag" 1194LIBS=$boost_thread_save_LIBS 1195LDFLAGS=$boost_thread_save_LDFLAGS 1196CPPFLAGS=$boost_thread_save_CPPFLAGS 1197])# BOOST_THREAD 1198 1199AU_ALIAS([BOOST_THREADS], [BOOST_THREAD]) 1200 1201 1202# BOOST_TOKENIZER() 1203# ----------------- 1204# Look for Boost.Tokenizer 1205BOOST_DEFUN([Tokenizer], 1206[BOOST_FIND_HEADER([boost/tokenizer.hpp])]) 1207 1208 1209# BOOST_TRIBOOL() 1210# --------------- 1211# Look for Boost.Tribool 1212BOOST_DEFUN([Tribool], 1213[BOOST_FIND_HEADER([boost/logic/tribool_fwd.hpp]) 1214BOOST_FIND_HEADER([boost/logic/tribool.hpp]) 1215]) 1216 1217 1218# BOOST_TUPLE() 1219# ------------- 1220# Look for Boost.Tuple 1221BOOST_DEFUN([Tuple], 1222[BOOST_FIND_HEADER([boost/tuple/tuple.hpp])]) 1223 1224 1225# BOOST_TYPETRAITS() 1226# -------------------- 1227# Look for Boost.TypeTraits 1228BOOST_DEFUN([TypeTraits], 1229[BOOST_FIND_HEADER([boost/type_traits.hpp])]) 1230 1231 1232# BOOST_UTILITY() 1233# --------------- 1234# Look for Boost.Utility (noncopyable, result_of, base-from-member idiom, 1235# etc.) 1236BOOST_DEFUN([Utility], 1237[BOOST_FIND_HEADER([boost/utility.hpp])]) 1238 1239 1240# BOOST_VARIANT() 1241# --------------- 1242# Look for Boost.Variant. 1243BOOST_DEFUN([Variant], 1244[BOOST_FIND_HEADER([boost/variant/variant_fwd.hpp]) 1245BOOST_FIND_HEADER([boost/variant.hpp])]) 1246 1247 1248# BOOST_POINTER_CONTAINER() 1249# ------------------------ 1250# Look for Boost.PointerContainer 1251BOOST_DEFUN([Pointer_Container], 1252[BOOST_FIND_HEADER([boost/ptr_container/ptr_deque.hpp]) 1253BOOST_FIND_HEADER([boost/ptr_container/ptr_list.hpp]) 1254BOOST_FIND_HEADER([boost/ptr_container/ptr_vector.hpp]) 1255BOOST_FIND_HEADER([boost/ptr_container/ptr_array.hpp]) 1256BOOST_FIND_HEADER([boost/ptr_container/ptr_set.hpp]) 1257BOOST_FIND_HEADER([boost/ptr_container/ptr_map.hpp]) 1258])# BOOST_POINTER_CONTAINER 1259 1260 1261# BOOST_WAVE([PREFERRED-RT-OPT]) 1262# ------------------------------ 1263# NOTE: If you intend to use Wave/Spirit with thread support, make sure you 1264# call BOOST_THREAD first. 1265# Look for Boost.Wave. For the documentation of PREFERRED-RT-OPT, see the 1266# documentation of BOOST_FIND_LIB above. 1267BOOST_DEFUN([Wave], 1268[AC_REQUIRE([BOOST_FILESYSTEM])dnl 1269AC_REQUIRE([BOOST_DATE_TIME])dnl 1270boost_wave_save_LIBS=$LIBS 1271boost_wave_save_LDFLAGS=$LDFLAGS 1272m4_pattern_allow([^BOOST_((FILE)?SYSTEM|DATE_TIME|THREAD)_(LIBS|LDFLAGS)$])dnl 1273LIBS="$LIBS $BOOST_SYSTEM_LIBS $BOOST_FILESYSTEM_LIBS $BOOST_DATE_TIME_LIBS \ 1274$BOOST_THREAD_LIBS" 1275LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS $BOOST_FILESYSTEM_LDFLAGS \ 1276$BOOST_DATE_TIME_LDFLAGS $BOOST_THREAD_LDFLAGS" 1277BOOST_FIND_LIB([wave], [$1], 1278 [boost/wave.hpp], 1279 [boost::wave::token_id id; get_token_name(id);]) 1280LIBS=$boost_wave_save_LIBS 1281LDFLAGS=$boost_wave_save_LDFLAGS 1282])# BOOST_WAVE 1283 1284 1285# BOOST_XPRESSIVE() 1286# ----------------- 1287# Look for Boost.Xpressive (new since 1.36.0). 1288BOOST_DEFUN([Xpressive], 1289[BOOST_FIND_HEADER([boost/xpressive/xpressive.hpp])]) 1290 1291 1292# ----------------- # 1293# Internal helpers. # 1294# ----------------- # 1295 1296 1297# _BOOST_PTHREAD_FLAG() 1298# --------------------- 1299# Internal helper for BOOST_THREAD. Computes boost_cv_pthread_flag 1300# which must be used in CPPFLAGS and LIBS. 1301# 1302# Yes, we *need* to put the -pthread thing in CPPFLAGS because with GCC3, 1303# boost/thread.hpp will trigger a #error if -pthread isn't used: 1304# boost/config/requires_threads.hpp:47:5: #error "Compiler threading support 1305# is not turned on. Please set the correct command line options for 1306# threading: -pthread (Linux), -pthreads (Solaris) or -mthreads (Mingw32)" 1307# 1308# Based on ACX_PTHREAD: http://autoconf-archive.cryp.to/acx_pthread.html 1309AC_DEFUN([_BOOST_PTHREAD_FLAG], 1310[AC_REQUIRE([AC_PROG_CXX])dnl 1311AC_REQUIRE([AC_CANONICAL_HOST])dnl 1312AC_LANG_PUSH([C++])dnl 1313AC_CACHE_CHECK([for the flags needed to use pthreads], [boost_cv_pthread_flag], 1314[ boost_cv_pthread_flag= 1315 # The ordering *is* (sometimes) important. Some notes on the 1316 # individual items follow: 1317 # (none): in case threads are in libc; should be tried before -Kthread and 1318 # other compiler flags to prevent continual compiler warnings 1319 # -lpthreads: AIX (must check this before -lpthread) 1320 # -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h) 1321 # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able) 1322 # -llthread: LinuxThreads port on FreeBSD (also preferred to -pthread) 1323 # -pthread: GNU Linux/GCC (kernel threads), BSD/GCC (userland threads) 1324 # -pthreads: Solaris/GCC 1325 # -mthreads: MinGW32/GCC, Lynx/GCC 1326 # -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it 1327 # doesn't hurt to check since this sometimes defines pthreads too; 1328 # also defines -D_REENTRANT) 1329 # ... -mt is also the pthreads flag for HP/aCC 1330 # -lpthread: GNU Linux, etc. 1331 # --thread-safe: KAI C++ 1332 case $host_os in #( 1333 *solaris*) 1334 # On Solaris (at least, for some versions), libc contains stubbed 1335 # (non-functional) versions of the pthreads routines, so link-based 1336 # tests will erroneously succeed. (We need to link with -pthreads/-mt/ 1337 # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather 1338 # a function called by this macro, so we could check for that, but 1339 # who knows whether they'll stub that too in a future libc.) So, 1340 # we'll just look for -pthreads and -lpthread first: 1341 boost_pthread_flags="-pthreads -lpthread -mt -pthread";; #( 1342 *) 1343 boost_pthread_flags="-lpthreads -Kthread -kthread -llthread -pthread \ 1344 -pthreads -mthreads -lpthread --thread-safe -mt";; 1345 esac 1346 # Generate the test file. 1347 AC_LANG_CONFTEST([AC_LANG_PROGRAM([#include <pthread.h>], 1348 [pthread_t th; pthread_join(th, 0); 1349 pthread_attr_init(0); pthread_cleanup_push(0, 0); 1350 pthread_create(0,0,0,0); pthread_cleanup_pop(0);])]) 1351 for boost_pthread_flag in '' $boost_pthread_flags; do 1352 boost_pthread_ok=false 1353dnl Re-use the test file already generated. 1354 boost_pthreads__save_LIBS=$LIBS 1355 LIBS="$LIBS $boost_pthread_flag" 1356 AC_LINK_IFELSE([], 1357 [if grep ".*$boost_pthread_flag" conftest.err; then 1358 echo "This flag seems to have triggered warnings" >&AS_MESSAGE_LOG_FD 1359 else 1360 boost_pthread_ok=:; boost_cv_pthread_flag=$boost_pthread_flag 1361 fi]) 1362 LIBS=$boost_pthreads__save_LIBS 1363 $boost_pthread_ok && break 1364 done 1365]) 1366AC_LANG_POP([C++])dnl 1367])# _BOOST_PTHREAD_FLAG 1368 1369 1370# _BOOST_gcc_test(MAJOR, MINOR) 1371# ----------------------------- 1372# Internal helper for _BOOST_FIND_COMPILER_TAG. 1373m4_define([_BOOST_gcc_test], 1374["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC @ gcc$1$2"])dnl 1375 1376# _BOOST_mingw_test(MAJOR, MINOR) 1377# ----------------------------- 1378# Internal helper for _BOOST_FIND_COMPILER_TAG. 1379m4_define([_BOOST_mingw_test], 1380["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC && \ 1381 (defined WIN32 || defined WINNT || defined _WIN32 || defined __WIN32 \ 1382 || defined __WIN32__ || defined __WINNT || defined __WINNT__) @ mgw$1$2"])dnl 1383 1384 1385# _BOOST_FIND_COMPILER_TAG() 1386# -------------------------- 1387# Internal. When Boost is installed without --layout=system, each library 1388# filename will hold a suffix that encodes the compiler used during the 1389# build. The Boost build system seems to call this a `tag'. 1390AC_DEFUN([_BOOST_FIND_COMPILER_TAG], 1391[AC_REQUIRE([AC_PROG_CXX])dnl 1392AC_REQUIRE([AC_CANONICAL_HOST])dnl 1393AC_CACHE_CHECK([for the toolset name used by Boost for $CXX], 1394 [boost_cv_lib_tag], 1395[boost_cv_lib_tag=unknown 1396if test x$boost_cv_inc_path != xno; then 1397 AC_LANG_PUSH([C++])dnl 1398 # The following tests are mostly inspired by boost/config/auto_link.hpp 1399 # The list is sorted to most recent/common to oldest compiler (in order 1400 # to increase the likelihood of finding the right compiler with the 1401 # least number of compilation attempt). 1402 # Beware that some tests are sensible to the order (for instance, we must 1403 # look for MinGW before looking for GCC3). 1404 # I used one compilation test per compiler with a #error to recognize 1405 # each compiler so that it works even when cross-compiling (let me know 1406 # if you know a better approach). 1407 # Known missing tags (known from Boost's tools/build/v2/tools/common.jam): 1408 # como, edg, kcc, bck, mp, sw, tru, xlc 1409 # I'm not sure about my test for `il' (be careful: Intel's ICC pre-defines 1410 # the same defines as GCC's). 1411 for i in \ 1412 _BOOST_mingw_test(5, 3) \ 1413 _BOOST_gcc_test(5, 3) \ 1414 _BOOST_mingw_test(5, 2) \ 1415 _BOOST_gcc_test(5, 2) \ 1416 _BOOST_mingw_test(5, 1) \ 1417 _BOOST_gcc_test(5, 1) \ 1418 _BOOST_mingw_test(5, 0) \ 1419 _BOOST_gcc_test(5, 0) \ 1420 _BOOST_mingw_test(4, 10) \ 1421 _BOOST_gcc_test(4, 10) \ 1422 _BOOST_mingw_test(4, 9) \ 1423 _BOOST_gcc_test(4, 9) \ 1424 _BOOST_mingw_test(4, 8) \ 1425 _BOOST_gcc_test(4, 8) \ 1426 _BOOST_mingw_test(4, 7) \ 1427 _BOOST_gcc_test(4, 7) \ 1428 _BOOST_mingw_test(4, 6) \ 1429 _BOOST_gcc_test(4, 6) \ 1430 _BOOST_mingw_test(4, 5) \ 1431 _BOOST_gcc_test(4, 5) \ 1432 _BOOST_mingw_test(4, 4) \ 1433 _BOOST_gcc_test(4, 4) \ 1434 _BOOST_mingw_test(4, 3) \ 1435 _BOOST_gcc_test(4, 3) \ 1436 _BOOST_mingw_test(4, 2) \ 1437 _BOOST_gcc_test(4, 2) \ 1438 _BOOST_mingw_test(4, 1) \ 1439 _BOOST_gcc_test(4, 1) \ 1440 _BOOST_mingw_test(4, 0) \ 1441 _BOOST_gcc_test(4, 0) \ 1442 "defined __GNUC__ && __GNUC__ == 3 && !defined __ICC \ 1443 && (defined WIN32 || defined WINNT || defined _WIN32 || defined __WIN32 \ 1444 || defined __WIN32__ || defined __WINNT || defined __WINNT__) @ mgw" \ 1445 _BOOST_gcc_test(3, 4) \ 1446 _BOOST_gcc_test(3, 3) \ 1447 "defined _MSC_VER && _MSC_VER >= 1500 @ vc90" \ 1448 "defined _MSC_VER && _MSC_VER == 1400 @ vc80" \ 1449 _BOOST_gcc_test(3, 2) \ 1450 "defined _MSC_VER && _MSC_VER == 1310 @ vc71" \ 1451 _BOOST_gcc_test(3, 1) \ 1452 _BOOST_gcc_test(3, 0) \ 1453 "defined __BORLANDC__ @ bcb" \ 1454 "defined __ICC && (defined __unix || defined __unix__) @ il" \ 1455 "defined __ICL @ iw" \ 1456 "defined _MSC_VER && _MSC_VER == 1300 @ vc7" \ 1457 _BOOST_gcc_test(2, 95) \ 1458 "defined __MWERKS__ && __MWERKS__ <= 0x32FF @ cw9" \ 1459 "defined _MSC_VER && _MSC_VER < 1300 && !defined UNDER_CE @ vc6" \ 1460 "defined _MSC_VER && _MSC_VER < 1300 && defined UNDER_CE @ evc4" \ 1461 "defined __MWERKS__ && __MWERKS__ <= 0x31FF @ cw8" 1462 do 1463 boost_tag_test=`expr "X$i" : 'X\([[^@]]*\) @ '` 1464 boost_tag=`expr "X$i" : 'X[[^@]]* @ \(.*\)'` 1465 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1466#if $boost_tag_test 1467/* OK */ 1468#else 1469# error $boost_tag_test 1470#endif 1471]])], [boost_cv_lib_tag=$boost_tag; break], []) 1472 done 1473AC_LANG_POP([C++])dnl 1474 case $boost_cv_lib_tag in #( 1475 # Some newer (>= 1.35?) versions of Boost seem to only use "gcc" as opposed 1476 # to "gcc41" for instance. 1477 *-gcc | *'-gcc ') :;; #( Don't re-add -gcc: it's already in there. 1478 gcc*) 1479 boost_tag_x= 1480 case $host_os in #( 1481 darwin*) 1482 if test $boost_major_version -ge 136; then 1483 # The `x' added in r46793 of Boost. 1484 boost_tag_x=x 1485 fi;; 1486 esac 1487 # We can specify multiple tags in this variable because it's used by 1488 # BOOST_FIND_LIB that does a `for tag in -$boost_cv_lib_tag' ... 1489 boost_cv_lib_tag="$boost_tag_x$boost_cv_lib_tag -${boost_tag_x}gcc" 1490 ;; #( 1491 unknown) 1492 AC_MSG_WARN([[could not figure out which toolset name to use for $CXX]]) 1493 boost_cv_lib_tag= 1494 ;; 1495 esac 1496fi])dnl end of AC_CACHE_CHECK 1497])# _BOOST_FIND_COMPILER_TAG 1498 1499 1500# _BOOST_GUESS_WHETHER_TO_USE_MT() 1501# -------------------------------- 1502# Compile a small test to try to guess whether we should favor MT (Multi 1503# Thread) flavors of Boost. Sets boost_guess_use_mt accordingly. 1504AC_DEFUN([_BOOST_GUESS_WHETHER_TO_USE_MT], 1505[# Check whether we do better use `mt' even though we weren't ask to. 1506AC_LANG_PUSH([C++])dnl 1507AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1508#if defined _REENTRANT || defined _MT || defined __MT__ 1509/* use -mt */ 1510#else 1511# error MT not needed 1512#endif 1513]])], [boost_guess_use_mt=:], [boost_guess_use_mt=false]) 1514AC_LANG_POP([C++])dnl 1515]) 1516 1517# _BOOST_AC_LINK_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE]) 1518# ------------------------------------------------------------------- 1519# Fork of _AC_LINK_IFELSE that preserves conftest.o across calls. Fragile, 1520# will break when Autoconf changes its internals. Requires that you manually 1521# rm -f conftest.$ac_objext in between to really different tests, otherwise 1522# you will try to link a conftest.o left behind by a previous test. 1523# Used to aggressively optimize BOOST_FIND_LIB (see the big comment in this 1524# macro). 1525# 1526# Don't use "break" in the actions, as it would short-circuit some code 1527# this macro runs after the actions. 1528m4_define([_BOOST_AC_LINK_IFELSE], 1529[m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl 1530rm -f conftest$ac_exeext 1531boost_save_ac_ext=$ac_ext 1532boost_use_source=: 1533# If we already have a .o, re-use it. We change $ac_ext so that $ac_link 1534# tries to link the existing object file instead of compiling from source. 1535test -f conftest.$ac_objext && ac_ext=$ac_objext && boost_use_source=false && 1536 _AS_ECHO_LOG([re-using the existing conftest.$ac_objext]) 1537AS_IF([_AC_DO_STDERR($ac_link) && { 1538 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" || 1539 test ! -s conftest.err 1540 } && test -s conftest$ac_exeext && { 1541 test "$cross_compiling" = yes || 1542 $as_executable_p conftest$ac_exeext 1543dnl FIXME: use AS_TEST_X instead when 2.61 is widespread enough. 1544 }], 1545 [$2], 1546 [if $boost_use_source; then 1547 _AC_MSG_LOG_CONFTEST 1548 fi 1549 $3]) 1550ac_objext=$boost_save_ac_objext 1551ac_ext=$boost_save_ac_ext 1552dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization) 1553dnl information created by the PGI compiler (conftest_ipa8_conftest.oo), 1554dnl as it would interfere with the next link command. 1555rm -f core conftest.err conftest_ipa8_conftest.oo \ 1556 conftest$ac_exeext m4_ifval([$1], [conftest.$ac_ext])[]dnl 1557])# _BOOST_AC_LINK_IFELSE 1558 1559# Local Variables: 1560# mode: autoconf 1561# End: 1562