build python binding error on windows 10,msvc14,python3.6.

[kingctan]

D:\local\boost_1_67_0\boost/python/operators.hpp(223): error C2065: "op_": undeclared identifier
D:\local\boost_1_67_0\boost/python/operators.hpp(223): error C2059: Syntax error: ">"
D:\local\boost_1_67_0\boost/python/operators.hpp(223): error C2976: "boost::python::detail::operator_l": Template parameters are too few
D:\local\boost_1_67_0\boost/python/operators.hpp(40): note: See the declaration of "boost::python::detail::operator_l"
D:\local\boost_1_67_0\boost/python/operators.hpp(223): error C2913: Explicit specialization; "boost::python::detail::operator_l" is not a specialization of a class template
D:\local\boost_1_67_0\boost/python/operators.hpp(223): error C2065: "op_": undeclared identifier
D:\local\boost_1_67_0\boost/python/operators.hpp(223): error C2059: Syntax error: ">"
D:\local\boost_1_67_0\boost/python/operators.hpp(223): error C2976: "boost::python::detail::operator_r": Template parameters are too few
D:\local\boost_1_67_0\boost/python/operators.hpp(45): note: See the declaration of "boost::python::detail::operator_r"
D:\local\boost_1_67_0\boost/python/operators.hpp(223): error C2913: Explicit specialization; "boost::python::detail::operator_r" is not specialization of class template
D:\local\boost_1_67_0\boost/python/operators.hpp(224): error C2913: Explicit customization; "boost::python::detail::operator_l" is not a specialization of the class template
D:\local\boost_1_67_0\boost/python/operators.hpp(224): error C2913: Explicit customization; "boost::python::detail::operator_r" is not a specialization of the class template

[Nanoatic]

i have the same issue did you find a way to solve it ?

[fun4jimmy]

I have also encountered this issue. It seems to be caused by a header defining rand before boost/python/operators.hpp is included. I found reordering my header files fixed it.

[hyyz17200]

@fun4jimmy I have this problem too. Plz how to fixed it? Reorder which file?

[stefanseefeld]

@fun4jimmy , "defining" as in macro ? Yuck ! It seems Windows as a habit of doing that...
Can you submit a patch (PR) for this ?

[hyyz17200]

Solved. modified cpp files in '\libtorrent-rasterbar-1.1.9\bindings\python\src'. Like @fun4jimmy said, change the order, move '#include "boost_python.hpp"' to the top.
I still have other 3 faild info, but not these ones. I will figure out after.

[hyyz17200]

@stefanseefeld is this problem related to boost ,or libtorrent ?

[stefanseefeld]

I have no idea. It sounds like MSVC defines a rogue macro that conflicts with symbols used in Boost.Python. If that's the case, there is nothing I can do but suggest exactly the action you have already taken: reorder the headers so this pollution doesn't affect Boost.Python code. So it's Boost.Python users (such as libtorrent) that need to adjust.

[ssiloti]

The problematic defines are for the alternative operator tokens like and, xor, eq, etc. These defines are coming from ciso646 which is included at least by Boost.Asio as a way of getting information on supported C++ versions.

The msvc documentation suggests it might be possible to use the /Za option to disable these defines, but it breaks many Windows SDK headers.

[stefanseefeld]

I suggest you lay out your code in a way that you can #undef the rogue macros prior to including Boost.Python header files, to avoid the above errors.

[lightzls]

If you are using Boost.Asio with Boost.Python, just open the file boost/asio/detail/config.hpp, remove line 73-75. It has been fixed in boost-1.69.0.
Ref commit: boostorg/asio@569cba5#diff-90ac9e94f73cea8d74f04eebdd5551d7

[Nanoatic]

Just tried it today with visual studio 2017 and python 3.7/boost-1.69 , I can confirm it is working fine. Cheers 😄