Boost 1.67.0 - Cannot link to boost_pythonPY_MAJOR_VERSIONPY_MINOR_VERSION...

[toby.case@…]

Cannot link to boost_python correctly. Using MSVC 2015 Update 3, boost_1_67_0\boost\python\detail\config.hpp line 108 does not expand as intended:

(line 108) #define BOOST_LIB_NAME boost_python##PY_MAJOR_VERSION##PY_MINOR_VERSION

This line expands to "boost_pythonPY_MAJOR_VERSIONPY_MINOR_VERSION(...).lib", which results in a linking error since the library is named "boost_python36(...).lib"

My Python distribution is Anaconda 5.1 and patchlevel.h has:

(line 19) #define PY_MAJOR_VERSION 3

(line 20) #define PY_MINOR_VERSION 6

Similarly, one will have difficulty with boost_1_67_0\boost\python\numpy\config.hpp line 64.

I tried repeatedly to make the preprocessor directives work as intended but I cannot quite figure it out. I wish I could find where the library name is generated for the build, not just the link.

[shand_public@…]

I see a similar problem - we use CMake with VS2017 - I see a link error; fatal error LNK1104: cannot open file 'boost_pythonPY_MAJOR_VERSIONPY_MINOR_VERSION-vc141-mt-x64-1_67.lib'

Andy

[anonymous]

There is a bug boost lib. Still waiting for a bugfix. you have to change python/detail/config.hpp.

-#define BOOST_LIB_NAME boost_python##PY_MAJOR_VERSION##PY_MINOR_VERSION +#define _BOOST_PYTHON_CONCAT(N, M, m) N ## M ## m +#define BOOST_PYTHON_CONCAT(N, M, m) _BOOST_PYTHON_CONCAT(N, M, m) +#define BOOST_LIB_NAME BOOST_PYTHON_CONCAT(boost_python, PY_MAJOR_VERSION, PY_MINOR_VERSION)

and after

#include <boost/config/auto_link.hpp> #endif auto-linking disabled

add

+#undef BOOST_PYTHON_CONCAT +#undef _BOOST_PYTHON_CONCAT +

[John Maddock]

Moved to ​https://github.com/boostorg/python/issues/201