Возникли проблемы при компиляции учебного файла boost для файловой системы

Я пытаюсь скомпилировать этот учебный файл от boost :: filesystem.

Я использую эту команду:

clang++ -std=c++11 -stdlib=libc++ tut3.cpp -L/usr/local/lib -lboost_filesystem-mt -lboost_system-mt

Тем не менее, я получаю:

Undefined symbols for architecture x86_64:
"boost::filesystem::path_traits::dispatch(boost::filesystem::directory_entry const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, std::__1::codecvt<wchar_t, char, __mbstate_t> const&)", referenced from:
boost::filesystem::path::path<boost::filesystem::directory_entry>(boost::filesystem::directory_entry const&, boost::enable_if<boost::filesystem::path_traits::is_pathable<boost::decay<boost::filesystem::directory_entry>::type>, void>::type*) in tut3-FljaLL.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Я использую лязг, включенный в Mountain Lion, и Boost устанавливается с brew install --with-mpi --use-clang, (mpich2 также устанавливается с --use-clang).

Подробный вывод компоновщика:

Apple clang version 4.0 (tags/Apple/clang-421.0.57) (based on LLVM 3.1svn)
Target: x86_64-apple-darwin12.1.0
Thread model: posix
"/usr/bin/clang" -cc1 -triple x86_64-apple-macosx10.8.0 -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name tut3.cpp -pic-level 1 -mdisable-fp-elim -relaxed-aliasing -masm-verbose -munwind-tables -target-cpu core2 -target-linker-version 133.3 -v -resource-dir /usr/bin/../lib/clang/4.0 -fmodule-cache-path /var/folders/nb/qkspw0z92f506gbjq9gb505r0000gn/T/clang-module-cache -stdlib=libc++ -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /Users/spott/Documents/Code/ebss/bin -ferror-limit 19 -fmessage-length 272 -stack-protector 1 -mstackrealign -fblocks -fobjc-runtime-has-arc -fobjc-runtime-has-weak -fobjc-dispatch-method=mixed -fobjc-default-synthesize-properties -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -o /var/folders/nb/qkspw0z92f506gbjq9gb505r0000gn/T/tut3-9Q4qRh.o -x c++ tut3.cpp
clang -cc1 version 4.0 based upon LLVM 3.1svn default target x86_64-apple-darwin12.1.0
ignoring nonexistent directory "/usr/include/c++/v1"#include "..." search starts here:
#include <...> search starts here:
/usr/bin/../lib/c++/v1
/usr/local/include
/usr/bin/../lib/clang/4.0/include
/usr/include
/System/Library/Frameworks (framework directory)
/Library/Frameworks (framework directory)
End of search list.
"/usr/bin/ld" -demangle -dynamic -arch x86_64 -macosx_version_min 10.8.0 -o a.out -L/usr/local/lib/ /var/folders/nb/qkspw0z92f506gbjq9gb505r0000gn/T/tut3-9Q4qRh.o -lboost_filesystem-mt -lboost_system-mt -lc++ -lSystem /usr/bin/../lib/clang/4.0/lib/darwin/libclang_rt.osx.a
Undefined symbols for architecture x86_64:
"boost::filesystem::path_traits::dispatch(boost::filesystem::directory_entry const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, std::__1::codecvt<wchar_t, char, __mbstate_t> const&)", referenced from:
boost::filesystem::path::path<boost::filesystem::directory_entry>(boost::filesystem::directory_entry const&, boost::enable_if<boost::filesystem::path_traits::is_pathable<boost::decay<boost::filesystem::directory_entry>::type>, void>::type*) in tut3-9Q4qRh.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Я, честно говоря, не уверен, в чем проблема, есть идеи?