为什么boost python构建的库没有任何导出功能？

Question

我构建了boost python (1.55)，没有任何错误或警告。以下是清单：

C:\Programming\boost>b2 toolset=msvc-11.0 link=static variant=release threading=multi runtime-link=static --with-python
link.jam: No such file or directory
Building the Boost C++ Libraries.

Component configuration:
    - atomic                   : not building
    - chrono                   : not building
    - context                  : not building
    - coroutine                : 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
    - log                      : 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 1654 targets...
...updating 30 targets...
compile-c-c++ bin.v2\libs\python\build\msvc-11.0\release\link-static\runtime-link-static\threading-multi\numeric.obj
numeric.cpp
..........................
compile-c-c++ bin.v2\libs\python\build\msvc-11.0\release\link-static\runtime-link-static\threading-multi\object\function_doc_signature.obj
function_doc_signature.cpp
msvc.archive bin.v2\libs\python\build\msvc-11.0\release\link-static\runtime-link-static\threading-multi\libboost_python-vc110-mt-s-1_55.lib
common.copy stage\lib\libboost_python-vc110-mt-s-1_55.lib
bin.v2\libs\python\build\msvc-11.0\release\link-static\runtime-link-static\threading-multi\libboost_python-vc110-mt-s-1_55.lib
Скопировано файлов:         1.
...updated 30 targets...

The Boost C++ Libraries were successfully built!
The following directory should be added to compiler include paths:
    C:/Programming/boost
The following directory should be added to linker library paths:
    C:\Programming\boost\stage\lib
C:\Programming\boost>

编辑：

但是，如果我将它添加到我的项目中(引用->链接器->输入->附加依赖项)，则会得到链接器错误，例如：

PyRunnable.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) class boost::python::api::object __cdecl boost::python::api::getitem(class boost::python::api::object const &,class boost::python::api::object const &)" (__imp_?getitem@api@python@boost@@YA?AVobject@123@ABV4123@0@Z)
PyRunnable.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) class boost::python::api::object __cdecl boost::python::api::getattr(class boost::python::api::object const &,char const *)" (__imp_?getattr@api@python@boost@@YA?AVobject@123@ABV4123@PBD@Z)
PyRunnable.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) protected: __thiscall boost::python::detail::str_base::str_base(void)" (__imp_??0str_base@detail@python@boost@@IAE@XZ)

如果我使用dumpbin /symbols，我甚至可以找到未解决的方法。所以，他们在里面，但是VS2012不知怎么地忽略了他们。为什么？

在附加依赖项字段中有：

libboost_system-vc110-mt-1_55.lib
libboost_program_options-vc110-mt-1_55.lib
libboost_filesystem-vc110-mt-1_55.lib

和他们没有任何问题。但是，如果添加libboost_python-vc120-mt-1_55.lib或否，我仍然会得到15个链接器错误。我做错什么了？

提前谢谢你。

Answer 1

这很正常。dumpbin /exports选项用于显示从PE文件导出的函数(例如DLL)，而不是将函数列出在/exports库中。

若要列出COFF库中的函数，请使用/symbols选项：

dumpbin /symbols libboost_python-vc110-mt-s-1_55.lib