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ブーストをclangでビルドしたいので、最新のxcodeとコマンドラインツールをインストールしました。コンパイルされたb2今、私は試します：

-mac:boost_1_53_0 tim$ ./b2 toolset=clang cxxflags="-std=c++11 -stdlib=libc++" linkflags="-stdlib=libc++" --prefix="./install-dir" debug release install

出力として次を取得します。

Performing configuration checks

    - 32-bit                   : no
    - 64-bit                   : yes
    - x86                      : yes
    - has_icu builds           : no
warning: Graph library does not contain MPI-based parallel components.
note: to enable them, add "using mpi ;" to your user-config.jam
    - iconv (libc)             : no
    - iconv (separate)         : yes
    - icu                      : no
    - icu (lib64)              : no
    - gcc visibility           : yes
    - long double support      : yes
warning: skipping optional Message Passing Interface (MPI) library.
note: to enable MPI support, add "using mpi ;" to user-config.jam.
note: to suppress this message, pass "--without-mpi" to bjam.
note: otherwise, you can safely ignore this message.
/Users/tim/Desktop/Work/boost_1_53_0/tools/build/v2/build/virtual-target.jam:1079: in virtual-target.register-actual-name from module virtual-target
error: Duplicate name of actual target: <pinstall-dir/lib>libboost_atomic.dylib
error: previous virtual target { clang-darwin%clang-darwin.link.dll-libboost_atomic.dylib.SHARED_LIB { clang-darwin%clang-darwin.compile.c++-lockpool.o.OBJ { lockpool.cpp.CPP } } }
error: created from libs/atomic/build/boost_atomic
error: another virtual target { clang-darwin%clang-darwin.link.dll-libboost_atomic.dylib.SHARED_LIB { clang-darwin%clang-darwin.compile.c++-lockpool.o.OBJ { lockpool.cpp.CPP } } }
error: created from libs/atomic/build/boost_atomic
error: added properties: <debug-symbols>off <define>NDEBUG <inlining>full <optimization>speed <runtime-debugging>off <variant>release
error: removed properties: <debug-symbols>on <inlining>off <optimization>off <runtime-debugging>on <variant>debug
/Users/tim/Desktop/Work/boost_1_53_0/tools/build/v2/build/virtual-target.jam:490: in actualize-no-scanner from module object(file-target)@67176
/Users/tim/Desktop/Work/boost_1_53_0/tools/build/v2/build/virtual-target.jam:135: in object(file-target)@67176.actualize from module object(file-target)@67176
/Users/tim/Desktop/Work/boost_1_53_0/tools/build/v2/build-system.jam:749: in load from module build-system
/Users/tim/Desktop/Work/boost_1_53_0/tools/build/v2/kernel/modules.jam:283: in import from module modules
/Users/tim/Desktop/Work/boost_1_53_0/tools/build/v2/kernel/bootstrap.jam:142: in boost-build from module
/Users/tim/Desktop/Work/boost_1_53_0/boost-build.jam:17: in module scope from module

基本的な質問があります: このようなエラーを修正するにはどうすればよいですか?

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