Hi, I have downloaded boost_1_49_0 to my Mac with OS X 10.5.8. I then ran: In the home folder I have: using python : 3.1 : /Library/Frameworks/Python.framework/Versions/3.1/bin/python3.1 ; In user-config.jam. I then ran the following: *** ***    Start Screen dump 1 *** $ ./bjam --with-python --user-config=user-config.jam Building the Boost C++ Libraries. Component configuration:     - chrono                   : 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                   : building     - random                   : not building     - regex                    : not building     - serialization            : not building     - signals                  : not building     - system                   : not building     - test                     : not building     - thread                   : not building     - timer                    : not building     - wave                     : not building ...patience... ...patience... ...found 1599 targets... ...updating 2 targets... darwin.link.dll bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib Undefined symbols:   "_PyFile_AsFile", referenced from:       boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o   "_PyString_FromFormat", referenced from:       boost::python::converter::rvalue_from_python_stage2(_object*, boost::python::converter::rvalue_from_python_stage1_data&, boost::python::converter::registration const&)in from_python.o       boost::python::converter::(anonymous namespace)::throw_no_lvalue_from_python(_object*, boost::python::converter::registration const&, char const*)                                          in from_python.o       boost::python::converter::(anonymous namespace)::lvalue_result_from_python(_object*, boost::python::converter::registration const&, char const*)                                          in from_python.o       boost::python::converter::registration::to_python(void const volatile*) constin registry.o       _enum_repr in enum.o       _enum_repr in enum.o   "_PyClass_Type", referenced from:       _PyClass_Type$non_lazy_ptr in function.o   "_PyNumber_Divide", referenced from:       boost::python::api::operator/(boost::python::api::object const&, boost::python::api::object const&)in object_operators.o   "_PyString_FromStringAndSize", referenced from:       boost::python::numeric::(anonymous namespace)::load(bool)                                  in numeric.o       boost::python::detail::str_base::str_base(char const*, char const*)in str.o       boost::python::detail::str_base::str_base(char const*, char const*)in str.o       boost::python::detail::str_base::str_base(char const*, unsigned long)in str.o       boost::python::detail::str_base::str_base(char const*, unsigned long)in str.o       boost::python::converter::do_return_to_python(char)in builtin_converters.o       boost::python::tuple boost::python::make_tuple<boost::python::str, boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::str>(boost::python::str const&, boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::python::str const&)in function_doc_signature.o       boost::python::tuple boost::python::make_tuple<boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::str>(boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::python::str const&)in function_doc_signature.o       boost::python::tuple boost::python::make_tuple<boost::python::str, boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >(boost::python::str const&, boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)in function_doc_signature.o   "_PyInt_Type", referenced from:       _PyInt_Type$non_lazy_ptr in enum.o   "_PyString_FromString", referenced from:       boost::python::detail::str_base::str_base()in str.o       boost::python::detail::str_base::str_base()in str.o       boost::python::detail::str_base::str_base(char const*)in str.o       boost::python::detail::str_base::str_base(char const*)in str.o       boost::python::converter::do_return_to_python(char const*)in builtin_converters.o   "_PyInt_AsLong", referenced from:       boost::python::detail::list_base::count(boost::python::api::object const&) constin list.o       boost::python::detail::list_base::index(boost::python::api::object const&) constin list.o       boost::python::detail::list_base::insert(boost::python::api::object const&, boost::python::api::object const&)in list.o       boost::python::detail::str_base::startswith(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o       boost::python::detail::str_base::isupper() constin str.o       boost::python::detail::str_base::istitle() constin str.o       boost::python::detail::str_base::isspace() constin str.o       boost::python::detail::str_base::islower() constin str.o       boost::python::detail::str_base::isdigit() constin str.o       boost::python::detail::str_base::isalpha() constin str.o       boost::python::detail::str_base::isalnum() constin str.o       boost::python::detail::str_base::startswith(boost::python::api::object const&) constin str.o       boost::python::detail::str_base::startswith(boost::python::api::object const&, boost::python::api::object const&) constin str.o       boost::python::detail::str_base::find(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o       boost::python::detail::str_base::index(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o       boost::python::detail::str_base::rfind(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o       boost::python::detail::str_base::rindex(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o       boost::python::detail::str_base::find(boost::python::api::object const&, boost::python::api::object const&) constin str.o       boost::python::detail::str_base::index(boost::python::api::object const&, boost::python::api::object const&) constin str.o       boost::python::detail::str_base::rfind(boost::python::api::object const&, boost::python::api::object const&) constin str.o       boost::python::detail::str_base::rindex(boost::python::api::object const&, boost::python::api::object const&) constin str.o       boost::python::detail::str_base::endswith(boost::python::api::object const&) constin str.o       boost::python::detail::str_base::find(boost::python::api::object const&) constin str.o       boost::python::detail::str_base::index(boost::python::api::object const&) constin str.o       boost::python::detail::str_base::rfind(boost::python::api::object const&) constin str.o       boost::python::detail::str_base::rindex(boost::python::api::object const&) constin str.o       _instance_new in class.o       boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<int, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<int> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o       boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<long, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<long> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o       boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<signed char, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<signed char> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o       boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<short, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<short> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o   "_PyNumber_InPlaceDivide", referenced from:       boost::python::api::operator/=(boost::python::api::object&, boost::python::api::object const&)in object_operators.o   "_PyString_InternFromString", referenced from:       _function_get_name in function.o   "_PyString_Size", referenced from:       boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::converter::(anonymous namespace)::string_rvalue_from_python>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o   "_PyFile_FromString", referenced from:       boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o       boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o   "_PyString_Type", referenced from:       _PyString_Type$non_lazy_ptr in str.o   "_PyInt_FromLong", referenced from:       boost::python::numeric::aux::array_base::argmin(long)in numeric.o       boost::python::numeric::aux::array_base::argmax(long)in numeric.o       boost::python::numeric::aux::array_base::argsort(long)in numeric.o       boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o       boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o       boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o       boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long>(_object*, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o       boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long>(_object*, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o       boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, boost::python::api::object, long>(_object*, boost::python::api::object const&, long const&, boost::type<boost::python::api::object>*)in numeric.o       boost::python::detail::list_base::pop(long)in list.o       boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, boost::python::api::object>(_object*, long const&, boost::python::api::object const&, boost::type<boost::python::api::object>*)in list.o       boost::python::objects::enum_base::to_python(_typeobject*, long)in enum.o       boost::python::objects::enum_base::to_python(_typeobject*, long)in enum.o       boost::python::objects::enum_base::add_value(char const*, long)in enum.o       boost::python::objects::enum_base::add_value(char const*, long)in enum.o       boost::python::objects::enum_base::export_values()   in enum.o       boost::python::objects::enum_base::export_values()   in enum.o       _object* boost::python::api::object_base_initializer<unsigned int>(unsigned int const&)in enum.o       _object* boost::python::api::object_base_initializer<unsigned long>(unsigned long const&)in class.o       boost::python::objects::function_doc_signature_generator::parameter_string(boost::python::objects::py_function const&, unsigned long, boost::python::api::object, bool)in function_doc_signature.o       boost::python::objects::function_doc_signature_generator::pretty_signature(boost::python::objects::function const*, unsigned long, bool)in function_doc_signature.o       boost::python::api::object::object<int>(int const&)in function_doc_signature.o       boost::python::api::proxy<boost::python::api::slice_policies> boost::python::api::object_operators<boost::python::api::object>::slice<int, boost::python::api::slice_nil>(int const&, boost::python::api::slice_nil const&)in function_doc_signature.o   "_Py_InitModule4", referenced from:       boost::python::detail::init_module(char const*, void (*)())in module.o   "_PyString_AsString", referenced from:       _enum_repr in enum.o       _enum_repr in enum.o       _enum_repr in enum.o       boost::python::converter::(anonymous namespace)::convert_to_cstring(_object*)                                                                 in builtin_converters.o       boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::converter::(anonymous namespace)::string_rvalue_from_python>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o ld: symbol(s) not found collect2: ld returned 1 exit status     "g++" -dynamiclib -Wl,-single_module -install_name "libboost_python3.dylib" -L"/Library/Frameworks/Python.framework/Versions/3.1/lib" -L"/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/config" -o "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/numeric.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/list.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/long.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/dict.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/tuple.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/str.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/slice.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/from_python.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/registry.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/type_id.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/enum.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/class.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/function.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/inheritance.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/life_support.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/pickle_support.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/errors.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/module.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/builtin_converters.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/arg_to_python_base.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/iterator.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/stl_iterator.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object_protocol.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object_operators.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/wrapper.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/import.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/exec.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/function_doc_signature.o"  -lpython3.1    -headerpad_max_install_names -Wl,-dead_strip -no_dead_strip_inits_and_terms ...failed darwin.link.dll bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib... ...skipped <pstage/lib>libboost_python3.dylib for lack of <pbin.v2/libs/python/build/darwin-4.0.1/release/threading-multi>libboost_python3.dylib... ...failed updating 1 target... ...skipped 1 target... *** ***    End Screen dump 1 *** So I changed to 2.7 in the user config file and got: *** ***   Start Screen dump 2 *** ./bjam --with-python --user-config=user-config.jam Building the Boost C++ Libraries. Component configuration:     - chrono                   : 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                   : building     - random                   : not building     - regex                    : not building     - serialization            : not building     - signals                  : not building     - system                   : not building     - test                     : not building     - thread                   : not building     - timer                    : not building     - wave                     : not building ...patience... ...patience... ...found 1597 targets... The Boost C++ Libraries were successfully built!          The following directory should be added to compiler include paths:              /Users/me/Desktop/boost_1_49_0      The following directory should be added to linker library paths:          /Users/me/Desktop/boost_1_49_0/stage/lib *** ***    End Screen dump 2 *** So that seemed to work. I then entered: *** ***    Start Screen dump 3 *** $cd libs/python/example/quickstart/ $../../../../bjam toolset=darwin --verbose-test test ...patience... ...patience... ...found 1680 targets... ...updating 17 targets... common.mkdir bin common.mkdir bin/test_embed.test common.mkdir bin/test_embed.test/darwin-4.0.1 common.mkdir bin/test_embed.test/darwin-4.0.1/debug common.mkdir bin/darwin-4.0.1 common.mkdir bin/darwin-4.0.1/debug darwin.compile.c++ bin/darwin-4.0.1/debug/embedding.o darwin.link bin/darwin-4.0.1/debug/embedding testing.capture-output bin/test_embed.test/darwin-4.0.1/debug/test_embed.run ====== BEGIN OUTPUT ====== registering extension module embedded_hello... defining Python class derived from Base... testing derived class from C++... success! running file script.py... Hello World ! success! intentionally causing a python exception... Traceback (most recent call last):   File "<string>", line 1, in <module> NameError: name 'unknown' is not defined No errors detected. EXIT STATUS: 0 ====== END OUTPUT ====== **passed** bin/test_embed.test/darwin-4.0.1/debug/test_embed.test common.mkdir bin/test_ext.test common.mkdir bin/test_ext.test/darwin-4.0.1 common.mkdir bin/test_ext.test/darwin-4.0.1/debug darwin.compile.c++ bin/darwin-4.0.1/debug/extending.o darwin.link.dll bin/darwin-4.0.1/debug/extending.so *** ***    End Screen dump 3 *** It hangs on the last line so I have to cancel it. I then ran: *** ***    Start Screen dump 4 *** $ python2.7 test_extending.py Trying:     from extending import * Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 6, in test_extending Failed example:     from extending import * Exception raised:     Traceback (most recent call last):       File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run         compileflags, 1) in test.globs       File "<doctest test_extending[0]>", line 1, in <module>         from extending import *     ImportError: No module named extending Trying:     hi = hello('California') Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 7, in test_extending Failed example:     hi = hello('California') Exception raised:     Traceback (most recent call last):       File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run         compileflags, 1) in test.globs       File "<doctest test_extending[1]>", line 1, in <module>         hi = hello('California')     NameError: name 'hello' is not defined Trying:     hi.greet() Expecting:     'Hello from California' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 8, in test_extending Failed example:     hi.greet() Exception raised:     Traceback (most recent call last):       File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run         compileflags, 1) in test.globs       File "<doctest test_extending[2]>", line 1, in <module>         hi.greet()     NameError: name 'hi' is not defined Trying:     invite(hi) Expecting:     'Hello from California! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 10, in test_extending Failed example:     invite(hi) Exception raised:     Traceback (most recent call last):       File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run         compileflags, 1) in test.globs       File "<doctest test_extending[3]>", line 1, in <module>         invite(hi)     NameError: name 'invite' is not defined Trying:     hi.invite() Expecting:     'Hello from California! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 12, in test_extending Failed example:     hi.invite() Exception raised:     Traceback (most recent call last):       File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run         compileflags, 1) in test.globs       File "<doctest test_extending[4]>", line 1, in <module>         hi.invite()     NameError: name 'hi' is not defined Trying:     class wordy(hello):         def greet(self):             return hello.greet(self) + ', where the weather is fine' Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 15, in test_extending Failed example:     class wordy(hello):         def greet(self):             return hello.greet(self) + ', where the weather is fine' Exception raised:     Traceback (most recent call last):       File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run         compileflags, 1) in test.globs       File "<doctest test_extending[5]>", line 1, in <module>         class wordy(hello):     NameError: name 'hello' is not defined Trying:     hi2 = wordy('Florida') Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 19, in test_extending Failed example:     hi2 = wordy('Florida') Exception raised:     Traceback (most recent call last):       File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run         compileflags, 1) in test.globs       File "<doctest test_extending[6]>", line 1, in <module>         hi2 = wordy('Florida')     NameError: name 'wordy' is not defined Trying:     hi2.greet() Expecting:     'Hello from Florida, where the weather is fine' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 20, in test_extending Failed example:     hi2.greet() Exception raised:     Traceback (most recent call last):       File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run         compileflags, 1) in test.globs       File "<doctest test_extending[7]>", line 1, in <module>         hi2.greet()     NameError: name 'hi2' is not defined Trying:     invite(hi2) Expecting:     'Hello from Florida! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 22, in test_extending Failed example:     invite(hi2) Exception raised:     Traceback (most recent call last):       File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run         compileflags, 1) in test.globs       File "<doctest test_extending[8]>", line 1, in <module>         invite(hi2)     NameError: name 'invite' is not defined 1 items had no tests:     test_extending.run ********************************************************************** 1 items had failures:    9 of   9 in test_extending 9 tests in 2 items. 0 passed and 9 failed. ***Test Failed*** 9 failures. *** ***    End Screen dump 4 *** If I  enter bin/darwin-4.0.1/debug, I get this for ls -al: mes-computer-444:debug me$ ls -al total 2688 drwxr-xr-x  6 me  me     204 Mar  9 11:36 . drwxr-xr-x  3 me  me     102 Mar  9 11:36 .. -rwxr-xr-x  1 barrygriffin  me  164080 Mar  9 11:36 embedding -rw-r--r--  1 me  me  472992 Mar  9 11:36 embedding.o -rw-r--r--  1 me  me  530060 Mar  9 11:36 extending.o -rwxr-xr-x  1 me  me  199076 Mar  9 11:36 extending.so Why am I hanging? I'd like to get python3 to work with boost but maybe its best to fix the hanging problem first. Thanks, Barry