Boost Python 基本示例不起作用

Question

中最简单的 Hello World 示例

#include <boost/python.hpp>

char const* greet()
{
    return "hello, world";
}

BOOST_PYTHON_MODULE(hello_ext)
{
    using namespace boost::python;
    def("greet", greet);
}

使用以下 CMake 在 Windows 上编译项目：

cmake_minimum_required(VERSION 3.2)
project(hello_ext CXX)
set(TARGET hello_ext)

set(BOOST_MIN_VERSION "1.61.0")
set(Boost_ADDITIONAL_VERSIONS "1.61.0" "1.61")
set(BOOST_ROOT ${MY_BOOST_DIR}) 

set(Boost_USE_STATIC_LIBS OFF)
set(Boost_USE_STATIC_RUNTIME OFF)
set(Boost_USE_MULTITHREADED ON)

find_package(PythonLibs 3.4 REQUIRED )
find_package(Boost 1.61.0 COMPONENTS python REQUIRED) 

file(GLOB SOURCES *.cpp)

include_directories(${INCLUDE_DIRS} ${Boost_INCLUDE_DIRS} ${PYTHON_INCLUDE_DIRS})

python_add_module(${TARGET} ${SOURCES})

target_link_libraries(${TARGET} ${Boost_PYTHON_LIBRARY} ${PYTHON_LIBRARIES})

模块编译成功 hello_ext.pyd。尝试从位于同一目录中的 Python 脚本访问它：

import hello_ext
print(hello_ext.greet())

得到如下执行结果：

python3 test_cpp.py

Import Error: DLL load failed: The specified module could not be found

此外，尝试将 hello_ext.pyd 放入 Python DLL 目录 (C:/Python34/DLLs)，结果相同

Windows7个32位

C++ 编译器：Visual C++ 2015

Python 3.4.2，提升 1.61

更新：已解决，见下文

Answer 1

我已将包含 Boost Python *.lib 和 *.dll 文件的目录添加到 PATH。它使示例工作

Answer 2

这是针对 mac 用户的，因为我尝试了上述解决方案，但使用 osx el capitan 时它对我不起作用。我有两个 CMakeLists.txt 可以工作，但是，我认为它们不是基于 https://gitlab.kitware.com/cmake/cmake/issues/16335 的问题。

PROJECT(example)
set(CMAKE_CXX_STANDARD 11)
set( CMAKE_EXPORT_COMPILE_COMMANDS ON )
cmake_policy(SET CMP0042 NEW)
set(EIGEN_DIR "/usr/local/include/eigen3/" )
set(PYTHON_INCLUDE_DIRS "//anaconda/include/python2.7")
set(PYTHON_LIBRARY "//anaconda/lib/libpython2.7.dylib")
find_package(Boost 1.66.0 COMPONENTS python)
if(Boost_FOUND)
    include_directories(${Boost_INCLUDE_DIRS} ${EIGEN_DIR} ${PYTHON_INCLUDE_DIRS} include)
    set(Boost_USE_STATIC_LIBS OFF)
    set(Boost_USE_MULTITHREADED ON)
    set(Boost_USE_STATIC_RUNTIME OFF)
    add_library (yay MODULE src/example_ext.cpp)
    target_link_libraries(yay ${Boost_LIBRARIES} ${PYTHON_LIBRARY})
endif()

PROJECT(example)
set(CMAKE_CXX_STANDARD 11)
set( CMAKE_EXPORT_COMPILE_COMMANDS ON )
cmake_policy(SET CMP0042 NEW)
set(EIGEN_DIR "/usr/local/include/eigen3/" )
find_package(Boost 1.66.0 COMPONENTS python3)
if(Boost_FOUND)
    set(Boost_USE_STATIC_LIBS OFF)
    set(Boost_USE_MULTITHREADED ON)
    set(Boost_USE_STATIC_RUNTIME OFF)
    find_package(PythonLibs REQUIRED)
    include_directories(${Boost_INCLUDE_DIRS} ${EIGEN_DIR} ${PYTHON_INCLUDE_DIRS} include)
    add_library (yay SHARED src/example_ext.cpp)
    target_link_libraries(yay ${Boost_LIBRARIES} ${PYTHON_LIBRARY})
endif()

Boost Python 基本示例不起作用

Boost Python basic example does not work

c++

boost

boost-python