`pyembree` 的 CMake 构建帮助

Question

我正在寻求使用 CMake 为 Windows 从源代码构建 pyembree 的帮助。 here on GitHub 列出了有关此问题历史的更多详细信息。 Windows conda-forge 上对 pyembree 的支持刚刚被删除，因此我们将不胜感激任何可以提供的帮助！

安装说明

系统

测试于：

OS: Windows 10 x64 专业版，内部版本 1909 Python: 3.8.10

步骤

安装Microsoft Visual C++ 14.X and Windows 10 SDK。这些是构建 cython 代码所必需的。

(NOTE: The version of Microsoft Visual Studio is not the same as the version of Microsoft Visual C++. Visual Studio 2015, 2017, and 2019 all have MSVCv14X build tools. At the time of this writing, installing the Visual Studio 2019 Build Tools with

MSVCv142 - VS 2019 C++ x64/x86 build tools and Windows 10 SDK (10.0.18362.0)

components will suffice (select the Desktop development with C++ Workload if installing Visual Studio 2019).

在 C:\vcpkg 中安装 vcpkg 并将路径添加到您的 System Environment Variables:

C:
mkdir vcpkg
cd C:\vcpkg
git clone https://github.com/Microsoft/vcpkg.git
bootstrap-vcpkg.bat
vcpkg integrate install

安装embree2 64-bit：

vcpkg install embree2:x64-windows

NOTE: To date, pyembree still relies on Embree 2 and has not been updated for Embree 3.

安装cmake.
创建项目文件夹并使用 venv（使用 Python 3.6 - 3.8）初始化虚拟环境。在此示例中，选择了 Python 3.8.5 x64-bit，因为它是 Miniconda py38_4.9.2.
中使用的 Python 版本
安装以下软件包：

py -m pip install numpy cython cmake ninja scikit-build wheel setuptools pyvista pykdtree

将以下 cmake modules 添加到您的系统 cmake 模块文件夹（例如 C:\Program Files\CMake\share\cmake-3.21\Modules\）。
导航至 <virtual environment folder>\Lib\site-packages 并克隆 pyembree 存储库：

git clone https://github.com/scopatz/pyembree.git

将目录更改为 pyembree 文件夹并创建以下内容 top-level CMakeLists.txt

cmake_minimum_required(VERSION 3.21.0)
project(pyembree
    VERSION 0.1.6
    LANGUAGES CXX
)

set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_CXX_STANDARD_REQUIRED True)

if(NOT CMAKE_BUILD_TYPE)
    set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type" FORCE)
endif()

set(CMAKE_TOOLCHAIN_FILE "C:/vcpkg/scripts/buildsystems/vcpkg.cmake")

find_package(PythonExtensions REQUIRED)
find_package(Cython REQUIRED)
find_package(embree 2 CONFIG REQUIRED)

add_subdirectory(${PROJECT_NAME})

移动到子文件夹 pyembree 并创建以下 sub-level CMakeLists.txt:

add_cython_target(mesh_construction.pyx CXX)
add_cython_target(rtcore_scene.pyx CXX)
add_cython_target(rtcore.pyx CXX)
add_cython_target(triangles.pyx CXX)

add_library(${PROJECT_NAME} STATIC ${mesh_construction} ${rtcore_scene} ${rtcore} ${triangles})

target_sources(${PROJECT_NAME} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})

target_include_directories(${PROJECT_NAME}
    PUBLIC "<system python path>/include"
    PUBLIC "C:/vcpkg/installed/x64-windows/include/embree2"
    PUBLIC "<virtual environment folder>/Lib/site-packages/numpy/core/include"
)

target_link_directories(${PROJECT_NAME}
    PUBLIC "<system python path>/libs"
    PUBLIC "C:/vcpkg/installed/x64-windows/lib"
    PUBLIC "C:/vcpkg/installed/x64-windows/bin"
    PUBLIC "<virtual environment folder>/Lib/site-packages/numpy/core/lib"
)

target_link_libraries(${PROJECT_NAME}
    embree
)

python_extension_module(${PROJECT_NAME})

install(TARGETS ${PROJECT_NAME} LIBRARY DESTINATION lib)

相应地替换 <system python path>（例如 C:/Program Files/Python38）和 <virtual environment folder>。

返回 top-level pyembree 文件夹并创建以下 setup.py 文件：

from setuptools import find_packages
from skbuild import setup

import numpy as np
from Cython.Build import cythonize

include_path = [np.get_include()]

ext_modules = cythonize('pyembree/*.pyx', language_level=3, include_path=include_path)
for ext in ext_modules:
    ext.include_dirs = include_path
    ext.libraries = [
        "C:/vcpkg/installed/x86-windows/lib/embree",
        "C:/vcpkg/installed/x86-windows/lib/tbb",
        "C:/vcpkg/installed/x86-windows/lib/tbbmalloc",
        "C:/vcpkg/installed/x86-windows/lib/tbbmalloc_proxy",
]

setup(
    name="pyembree",
    version='0.1.6',
    ext_modules=ext_modules,
    zip_safe=False,
    packages=find_packages(),
    include_package_data=True
)

将以下行添加到 pyembree 中每个 *.pyx 和 *.pxd 文件的顶部：

# distutils: language=c++

通过运行 top-level pyembree 文件夹中的以下内容构建并安装 pyembree：

py setup.py build
py setup.py install

最后，安装rtree和trimesh：

py -m pip install rtree trimesh

当前挑战

我卡在了 py setup.py build。

目前，我需要将 embree headers 和库（.lib 和 .dll）复制并粘贴到源文件夹 (<virtual environment folder>/Lib/site-packages/pyembree)并生成构建文件夹 (<virtual environment folder>\Lib\site-packages\pyembree\_skbuild\win-amd64-3.8\cmake-build\pyembree)

是否有我可以在 CMake 中使用的复制文件命令？

当运行 py setup.py build 时，我得到 LNK201: unresolved external symbol __imp_rtcMapBuffer、__imp_rtc_NewTriangleMesh 和 __imp_rtcUnmapBuffer 的链接器错误。我相信 __imp_ 是一个 DLL 构造，它只适用于 C-Language 和共享库（不是静态库），所以我有点困惑。

对于此错误的任何帮助也将不胜感激！

Creating library _skbuild\win-amd64-3.8\setuptools\temp.win-amd64-3.8\Release\pyembree\mesh_construction.cp38-win_amd64.lib and object _skbuild\win-amd64-3.8\setuptools\temp.win-amd64-3.8\Release\pyembree\mesh_construction.cp38-win_amd64.exp
mesh_construction.obj : error LNK2001: unresolved external symbol __imp_rtcMapBuffer
mesh_construction.obj : error LNK2001: unresolved external symbol __imp_rtcNewTriangleMesh
mesh_construction.obj : error LNK2001: unresolved external symbol __imp_rtcUnmapBuffer
_skbuild\win-amd64-3.8\setuptools\lib.win-amd64-3.8\pyembree\mesh_construction.cp38-win_amd64.pyd : fatal error LNK1120: 3 unresolved externals
error: command 'C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\HostX86\x64\link.exe' failed with exit status 1120

Answer 1

实际上不需要CMake。有关完整说明，请参阅我在 Install pyembree on Windows without Conda #468.

上的解决方案

`pyembree` 的 CMake 构建帮助

CMake Build Help for `pyembree`

windows

cmake

scikits

embree

安装说明

系统

步骤

当前挑战