Hi everyone, thanks to hints on this list I've now got a working build of boost.python.
I built the hello world exmaple (using the jam-file) and ran the testsuite with success. Now I want to get used to boost.python by exporting a few functions of a C++ lib I'm working on. This lib uses make as buildtool. Therefore I want to know how to setup a Makefile for boost.python. To start from ground up, I just took the example source code from libs/python/example/tutorial/hello.cpp and tried to compile and link it as a shared library. Unfortunately, there remain undefined symbols, which is why it cannot be loaded as python module. My boost installation is under /usr/local and is built in system layout as static libraries (libboost_x.a). $ cat hello.cpp // Copyright Joel de Guzman 2002-2004. Distributed under the Boost // Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt // or copy at http://www.boost.org/LICENSE_1_0.txt) // Hello World Example from the tutorial // [Joel de Guzman 10/9/2002] #include <boost/python/module.hpp> #include <boost/python/def.hpp> char const* greet() { return "hello, world"; } BOOST_PYTHON_MODULE(hello_ext) { using namespace boost::python; def("greet", greet); } $ g++ -I/usr/local/include -I/usr/include/python -fpic -c -o hello.o hello.cpp $ g++ -shared -Wl,-soname,"libhello.so" -o libhello.so hello.o $ nm -u libhello.so U PyString_Type w _Jv_RegisterClasses U _Py_NoneStruct U _Unwind_Resume@@GCC_3.0 U _ZN5boost6python6detail11init_moduleEPKcPFvvE U _ZN5boost6python6detail12gcc_demangleEPKc U _ZN5boost6python6detail17scope_setattr_docEPKcRKNS0_3api6objectES3_ U _ZN5boost6python7objects15function_objectERKNS1_11py_functionE U _ZN5boost6python7objects21py_function_impl_baseD2Ev U _ZN5boost6python9converter19do_return_to_pythonEPKc U _ZN5boost6python9converter8registry5queryENS0_9type_infoE U _ZNK5boost6python7objects21py_function_impl_base9max_arityEv U _ZNK5boost6python9converter12registration25expected_from_python_typeEv U _ZTIN5boost6python7objects21py_function_impl_baseE U _ZTIPKc@@CXXABI_1.3 U _ZTIc@@CXXABI_1.3 U _ZTVN10__cxxabiv120__si_class_type_infoE@@CXXABI_1.3 U _ZTVN5boost6python7objects21py_function_impl_baseE U _ZdlPv@@GLIBCXX_3.4 U _Znwm@@GLIBCXX_3.4 U __cxa_atexit@@GLIBC_2.2.5 w __cxa_finalize@@GLIBC_2.2.5 U __cxa_guard_abort@@CXXABI_1.3 U __cxa_guard_acquire@@CXXABI_1.3 U __cxa_guard_release@@CXXABI_1.3 w __gmon_start__ U __gxx_personality_v0@@CXXABI_1.3 $ python >>> import libhello Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: ./libhello.so: undefined symbol: _ZNK5boost6python7objects21py_function_impl_base9max_arityEv So what is the big magic of bjam that when bjam links libboost_python.a I get no undefined symbols, but when i do it "by hand" i get these? Regards, Philipp _______________________________________________ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
