Compiling with Boost::Python, cmake and windows

Question

I am trying to compile a tutorial project with Boost::python using cmake on windows.

I installed Boost using

.\b2 --with-python --toolset=msvc-14.1 architecture=x86 address-model=64 link=shared --user-config=user-config.jam

The user config contains

import toolset : using ;
using python 
: 3.6  # Version
: C:/ProgramData/Anaconda3/python.exe  # Interpreter
: C:/ProgramData/Anaconda3/include/include  # inc dir
: C:/ProgramData/Anaconda3/libs  # link libs
: <toolset>msvc
;

the cmake file is

cmake_minimum_required(VERSION 3.13)

cmake_policy(SET CMP0074 NEW)

project(tutorial)
  # Find default python libraries and interpreter
  find_package(Boost REQUIRED)
  find_package(PythonInterp 3 REQUIRED)
  find_package(PythonLibs 3 REQUIRED)

  include_directories(${Boost_INCLUDE_DIR} ${PYTHON_INCLUDE_DIRS})
  SET(Boost_USE_STATIC_LIBS     OFF)
  SET(Boost_USE_MULTITHREADED    ON)
  SET(Boost_USE_STATIC_RUNTIME     OFF)
  find_package(Boost 1.67 REQUIRED COMPONENTS python36)

  message(STATUS "PYTHON_LIBRARIES = ${PYTHON_LIBRARIES}")
  message(STATUS "PYTHON_EXECUTABLE = ${PYTHON_EXECUTABLE}")
  message(STATUS "PYTHON_INCLUDE_DIRS = ${PYTHON_INCLUDE_DIRS}")
  message(STATUS "Boost_LIBRARIES = ${Boost_LIBRARIES}")

  # Build and link the pylib module
  add_library(pylib MODULE pylib.cpp)
  set_target_properties(pylib PROPERTIES SUFFIX .pyd)

  target_link_libraries(pylib ${Boost_LIBRARIES} ${PYTHON_LIBRARIES})

cmake is able to find the boost_python library

Boost_LIBRARIES = optimized;C:/Program Files/boost/boost_1_67_0/stage/lib/boost_python36-vc141-mt-x64-1_67.lib;debug;C:/Program Files/boost/boost_1_67_0/stage/lib/boost_python36-vc141-mt-gd-x64-1_67.lib

But I still get the following error during compilation:

LNK1104 cannot open file 'boost_pythonPY_MAJOR_VERSIONPY_MINOR_VERSION-vc141-mt-gd-x64-1_67.lib'

Anybody have any insight on what is going on? why is the linker still unable to find the library file.

I am loosely following this guy's example.

MAJOR_VERSIONPY and MAJOR_VERSIONPY look like macros that haven't been defined properly, see Compile problems when trying to link to 1.67.0 python library #193 — user7860670
– user7860670, Commented Dec 5, 2018 at 4:44
@VTT thanks, I manually set the major and minor macro value and the thing now compiles. But loading the resulting pyd file in python creates an error. I guess that's another problem entirely XD — Marc Wang
– Marc Wang, Commented Dec 5, 2018 at 17:06

Kevin · Accepted Answer · 2020-04-25 16:01:57Z

2

Thanks to VTT answer's, I needed to set the PY_MAJOR_VERSION and PY_MINOR_VERSION to the correct value.

edited Apr 25, 2020 at 16:01

Kevin

18.8k8 gold badges71 silver badges86 bronze badges

answered Dec 5, 2018 at 15:21

Marc Wang

1712 silver badges13 bronze badges

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