Component configuration:

    - atomic                   : not building
    - chrono                   : not building
    - context                  : not building
    - date_time                : not building
    - exception                : not building
    - filesystem               : not building
    - graph                    : not building
    - graph_parallel           : not building
    - iostreams                : not building
    - locale                   : not building
    - math                     : not building
    - mpi                      : not building
    - program_options          : not building
    - python                   : not building
    - random                   : not building
    - regex                    : not building
    - serialization            : not building
    - signals                  : not building
    - system                   : not building
    - test                     : building
    - thread                   : not building
    - timer                    : not building
    - wave                     : not building

...patience...
...found 1116 targets...
...updating 174 targets...
compile.c++.without-pth i:\boost-trunk\boost\bin.v2\libs\test\build\clang-linux-3.1\debug\threading-multi\execution_monitor.obj

  "C:/mingw32-dw2/bin/clang++.exe" -c -x c++ -v -std=c++11 -nostdinc++ -cxx-include-arch=C:/mingw32-dw2/i686-w64-mingw32 -cxx-include-32bit-dir=32 -cxx-include-root=C:/mingw32-dw2/include/c++/4.6.3 -stdlib=libc++ -O0 -g -fno-inline -Wall -pedantic -g -mthreads  -DBOOST_ALL_NO_LIB=1 -DBOOST_TEST_DYN_LINK=1 -I"." -o "i:\boost-trunk\boost\bin.v2\libs\test\build\clang-linux-3.1\debug\threading-multi\execution_monitor.obj" "libs\test\src\execution_monitor.cpp"

clang version 3.1 (tags/RELEASE_31/final 161181) (llvm/tags/RELEASE_31/final 161243)
Target: i686-w64-mingw32
Thread model: posix
 "C:/mingw32-dw2/bin/clang++.exe" -cc1 -triple i686-w64-mingw32 -S -disable-free -disable-llvm-verifier -main-file-name execution_monitor.cpp -mrelocation-model static -mdisable-fp-elim -mconstructor-aliases -target-cpu pentium4 -target-linker-version 2.22.0.20120323 -momit-leaf-frame-pointer -v -g -coverage-file C:/Users/Paul/AppData/Local/Temp/execution_monitor-716770.s -nostdinc++ -resource-dir "C:/mingw32-dw2/bin\\..\\lib\\clang\\3.1" -D BOOST_ALL_NO_LIB=1 -D BOOST_TEST_DYN_LINK=1 -I . -fmodule-cache-path "C:\\Users\\Paul\\AppData\\Local\\Temp\\clang-module-cache" -stdlib=libc++ -O0 -Wall -pedantic -std=c++11 -fdeprecated-macro -fno-dwarf-directory-asm -ferror-limit 19 -fmessage-length 0 -mstackrealign -fno-use-cxa-atexit -fno-inline -fgnu-runtime -fobjc-runtime-has-arc -fobjc-runtime-has-weak -fobjc-fragile-abi -fcxx-exceptions -fexceptions -fdiagnostics-show-option -o C:/Users/Paul/AppData/Local/Temp/execution_monitor-716770.s -x c++ "libs\\test\\src\\execution_monitor.cpp"
clang -cc1 version 3.1 based upon LLVM 3.1 default target i686-w64-mingw32
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "C:/mingw32-dw2/bin/../lib/clang/3.1/../../../x86_64-w64-mingw32/include"
ignoring nonexistent directory "/mingw/include"
ignoring nonexistent directory "/usr/include"
#include "..." search starts here:
#include <...> search starts here:
 .
 C:/mingw32-dw2/bin/../lib/clang/3.1/include
 C:/mingw32-dw2/bin/../lib/clang/3.1/../../../i686-w64-mingw32/include
 C:/mingw32-dw2/bin/../lib/clang/3.1/../../../include
 c:/mingw/include
End of search list.
In file included from libs\test\src\execution_monitor.cpp:16:
In file included from .\boost/test/impl/execution_monitor.ipp:28:
In file included from .\boost/test/detail/config.hpp:19:
In file included from .\boost/config.hpp:40:
.\boost/config/select_stdlib_config.hpp:18:12: fatal error: 'cstddef' file not found
#  include <cstddef>
           ^
1 error generated.
...failed compile.c++.without-pth i:\boost-trunk\boost\bin.v2\libs\test\build\clang-linux-3.1\debug\threading-multi\execution_monitor.obj...
...skipped <pi:\boost-trunk\boost\bin.v2\libs\test\build\clang-linux-3.1\debug\threading-multi>boost_prg_exec_monitor-clang31-mt-d-1_52.dll for lack of <pi:\boost-trunk\boost\bin.v2\libs\test\build\clang-linux-3.1\debug\threading-multi>execution_monitor.obj...
...failed updating 1 target...
...skipped 1 target...