i do the work as following: 0.install bjam 1. down boost_1_40_0 2. untar to disk root directory 3. ./bootstrap.sh ---with-library=thread 4. configure user-config.jam as following: using darwin : 4.2.1~iphone : /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/g++ : <striper> : <architecture>arm <target-os>iphone <macosx-version>iphone-2.1 ; using darwin : 4.2.1~iphonesim : /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/g++ : <striper> : <architecture>x86 <target-os>iphone <macosx-version>iphonesim-2.1 ; 5. command at console: bjam --prefix=/usrLibs/boostiPhoneDev toolset=darwin architecture=arm target-os=iphone macosx-version=iphone-2.1 define=_LITTLE_ENDIAN link=static install ... ... .... .. Any setting missing ? how to deal with it? In file included from ./boost/config.hpp:40, from ./boost/thread/detail/config.hpp:10, from libs/thread/src/pthread/thread.cpp:8: ./boost/config/select_stdlib_config.hpp:17:19: error: cstddef: No such file or directory In file included from ./boost/config/select_stdlib_config.hpp:33, from ./boost/config.hpp:40, from ./boost/thread/detail/config.hpp:10, from libs/thread/src/pthread/thread.cpp:8: ./boost/config/no_tr1/utility.hpp:21:21: error: utility: No such file or directory In file included from ./boost/thread/pthread/thread_data.hpp:9, from ./boost/thread/thread.hpp:17, from libs/thread/src/pthread/thread.cpp:10: ./boost/thread/exceptions.hpp:19:18: error: string: No such file or directory ./boost/thread/exceptions.hpp:20:21: error: stdexcept: No such file or directory In file included from ./boost/smart_ptr/shared_ptr.hpp:27, from ./boost/shared_ptr.hpp:17, from ./boost/thread/pthread/thread_data.hpp:10, from ./boost/thread/thread.hpp:17,