使用 pybind11 在 Python 脚本中调用 MAXON 库的正确 CMakeLists.txt 文件 [英] The correct CMakeLists.txt file to call a MAXON libarary in a Python script using pybind11

问题描述

我对整个 CMake 很陌生.关注这个和这个a> 帖子，现在我想在 Python 中调用 MAXON 函数，使用 pybind11.到目前为止我做了什么:

I'm very new to the whole CMake. Following this and this posts, now I want to call a MAXON function inside Python, using pybind11. What I have done so far:

• 可以从此页面 (直接下载链接).

wget https://www.maxongroup.com/medias/sys_master/root/8837358518302/EPOS-Linux-Library-En.zip

• 解压:

unzip EPOS-Linux-Library-En.zip

• 使安装 shell 脚本可执行并运行它:

chmod +x ./install.sh
sudo ./install.sh

• 然后转到示例文件夹:

cd /opt/EposCmdLib_6.6.1.0/examples/HelloEposCmd/

• 现在合并来自此处的CMakeLists.txt文件:

# CMakeLists.txt

cmake_minimum_required(VERSION 2.8.12)
project (HelloEposCmd)

set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wall")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Wall")

set(CMAKE_POSITION_INDEPENDENT_CODE ON)

find_package(pybind11 REQUIRED)
pybind11_add_module(${PROJECT_NAME} HelloEposCmd.cpp)

add_executable(${PROJECT_NAME} HelloEposCmd.cpp)

target_link_libraries(${PROJECT_NAME} -lEposCmd)

• 和 HelloEposCmd.cpp 这一行添加在其他头文件之后:
• and the HelloEposCmd.cpp this line is added right after other header files:

#include <pybind11/pybind11.h>

主函数重命名为:

int run(int argc, char** argv)

以及pybind11添加模块的语法写在最后:

and the pybind11 syntax to add the module is written at the end:

PYBIND11_MODULE(HelloEposCmd, m) {

    m.def("run", &run, "runs the HelloEposCmd");
}

但是，当我运行 cmake . 时出现错误:

However, When I run the cmake . I get the error:

CMakeLists.txt 中的 CMake 错误:13 (add_executable):

CMake Error at CMakeLists.txt:13 (add_executable):

add_executable 无法创建目标HelloEposCmd"；因为另一个同名的目标已经存在.现有目标是在源目录/opt/EposCmdLib_6.6.1.0/examples/HelloEposCmd"中创建的模块库.如需了解详情，请参阅政策 CMP0002 的文档.

add_executable can not create target "HelloEposCmd" because another target with the same name already exists. The existing target is a module library created in source directory "/opt/EposCmdLib_6.6.1.0/examples/HelloEposCmd" See documentation for policy CMP0002 for more details.

...

我想知道您是否可以帮助我获得正确的 CMakeList.txt 文件.理想情况下，我应该能够在 python 中调用已编译的模块:

I was wondering if you could be kind to help me get the right CMakeList.txt file. Ideally, I should be able to call the compiled module in python:

# HelloEposCmd.py

import HelloEposCmd

HelloEposCmd.run()

提前感谢您的支持.

推荐答案

pybind11_add_module 已经为你创建了一个目标.所以你不再需要 add_executable 了.只需删除该行，当您构建时，您将获得一个名为 HelloEposCmd

pybind11_add_module already creates a target for you. So you don't need add_executable anymore. Just remove that line and when you will build you will get a library with the name HelloEposCmd

add_executable 如果您正在构建可执行文件 (.exe)，我认为这不是您想要的.

add_executable is needed if you are building an executable (.exe), which I believe is not what you want.

文档 pybind11 说.

Documenation of pybind11 says.

此函数的行为与 CMake 的内置 add_library 非常相似(实际上，它是该命令的包装函数).

This function behaves very much like CMake’s builtin add_library (in fact, it’s a wrapper function around that command).

这篇关于使用 pybind11 在 Python 脚本中调用 MAXON 库的正确 CMakeLists.txt 文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！