如何在Windows电脑上安装pygalmesh（它依赖于Eigen）？

Question 1

编辑：对于那些感兴趣的人来说，创作者目前正在做这个工作 here .

我正在尝试安装 pygalmesh using pip install pygalmesh , which depends on Eigen .我已经下载了Eigen，但pip安装程序并不 "知道 "这一点。它返回以下错误信息。

ERROR: Could not build wheels for pygalmesh which use PEP 517 and cannot be installed directly
更具体地说。
fatal error C1083: Cannot open include file: 'Eigen/Dense':
俾尔麦斯的github有一个文件用于setup.py我可以编辑它，但我不知道我将如何安装pygalmesh. Still with pip? 
有没有一个我可以编辑的setup.py文件，让安装程序知道Eigen/Dense的位置？因为我有一台Windows PC，我至少认为需要把/改成\。但我找不到可以编辑的setup.py。
我发现在其他地方有关于这个问题的对话。web，也here.我不知道如何实现这些帖子中谈到的内容。我也试过通过conda安装eigen，比如here.这也没有起到作用。
错误信息的全文。
Collecting pygalmesh
  Using cached pygalmesh-0.6.2.tar.gz (1.2 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Installing backend dependencies ... done
    Preparing wheel metadata ... done
Collecting pybind11>=2.2
  Using cached pybind11-2.5.0.tar.gz (139 kB)
Collecting meshio<5.0.0,>=4.0.0
  Downloading meshio-4.0.11.tar.gz (302 kB)
     |████████████████████████████████| 302 kB 2.2 MB/s
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
Requirement already satisfied: importlib-metadata in c:\users\user\anaconda3\lib\site-packages (from pygalmesh) (1.5.0)
Requirement already satisfied: numpy in c:\users\user\anaconda3\lib\site-packages (from pygalmesh) (1.16.2)
Requirement already satisfied: zipp>=0.5 in c:\users\user\anaconda3\lib\site-packages (from importlib-metadata->pygalmesh) (2.2.0)
Skipping wheel build for pybind11, due to binaries being disabled for it.
Building wheels for collected packages: pygalmesh, meshio
  Building wheel for pygalmesh (PEP 517) ... error
  ERROR: Command errored out with exit status 1:
   command: 'C:\Users\User\Anaconda3\python.exe' 'C:\Users\User\Anaconda3\lib\site-packages\pip\_vendor\pep517\_in_process.py' build_wheel 'C:\Users\User\AppData\Local\Temp\tmpa0eqknmo'
       cwd: C:\Users\User\AppData\Local\Temp\pip-install-qm6jy0mx\pygalmesh
  Complete output (24 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win-amd64-3.7
  creating build\lib.win-amd64-3.7\pygalmesh
  copying pygalmesh\main.py -> build\lib.win-amd64-3.7\pygalmesh
  copying pygalmesh\__about__.py -> build\lib.win-amd64-3.7\pygalmesh
  copying pygalmesh\__init__.py -> build\lib.win-amd64-3.7\pygalmesh
  creating build\lib.win-amd64-3.7\pygalmesh\_cli
  copying pygalmesh\_cli\helpers.py -> build\lib.win-amd64-3.7\pygalmesh\_cli
  copying pygalmesh\_cli\_inr.py -> build\lib.win-amd64-3.7\pygalmesh\_cli
  copying pygalmesh\_cli\_remesh_surface.py -> build\lib.win-amd64-3.7\pygalmesh\_cli
  copying pygalmesh\_cli\_volume_from_surface.py -> build\lib.win-amd64-3.7\pygalmesh\_cli
  copying pygalmesh\_cli\__init__.py -> build\lib.win-amd64-3.7\pygalmesh\_cli
  running build_ext
  building '_pygalmesh' extension
  creating build\temp.win-amd64-3.7
  creating build\temp.win-amd64-3.7\Release
  creating build\temp.win-amd64-3.7\Release\src
  C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.22.27905\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -I/usr/include/eigen3/ -IC:\Users\User\AppData\Local\Temp\pip-build-env-bi2kt8ry\normal\Lib\site-packages\pybind11\include -IC:\Users\User\AppData\Local\Temp\pip-build-env-bi2kt8ry\normal\Lib\site-packages\pybind11\include -IC:\Users\User\Anaconda3\include -IC:\Users\User\Anaconda3\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.22.27905\ATLMFC\include" "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.22.27905\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.7.2\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" /EHsc /Tpsrc/generate.cpp /Fobuild\temp.win-amd64-3.7\Release\src/generate.obj
  generate.cpp
  C:\Users\User\AppData\Local\Temp\pip-install-qm6jy0mx\pygalmesh\src\domain.hpp(4): fatal error C1083: Cannot open include file: 'Eigen/Dense': No such file or directory
  error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC\\14.22.27905\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2
  ----------------------------------------
  ERROR: Failed building wheel for pygalmesh
  Building wheel for meshio (PEP 517) ... done
  Created wheel for meshio: filename=meshio-4.0.11-py3-none-any.whl size=127526 sha256=cc63c5792c3d20bce3532742afcccc100bc6312c1254e029f8771f286a5979c2
  Stored in directory: c:\users\user\appdata\local\pip\cache\wheels\17\27\cf\b034bc0b8bffd85475dfbab9791fcdeea89c77f040c4537afe
Successfully built meshio
Failed to build pygalmesh
ERROR: Could not build wheels for pygalmesh which use PEP 517 and cannot be installed directly

Question 2


          
           
            
             在对
             
              pygalmesh
             
             提出问题后
             
              github
             
             ，社区和创作者解决了这个问题。见
             
              here
             
             . Simply:
            
            conda install -c conda-forge pygalmesh

Question 3


          
           
            
             
              这个方案在Windows 10上运行，安装了python 3.8和Visual Studio Community 2019。
             
             
              
               安装依赖项。
               
                gmp
               
               、
               
                mpfr
               
               、
               
                eigen3
               
               和
               
                cgal
               
               。我推荐
               
                vcpkg
               
               用于libs的构建和安装，如下所述。你也可以用自己的方式单独安装和构建这些依赖，而不需要
               
                vcpkg
               
               。
              
              
               1.1. Install
               
                vcpkg
               
               (
               
                https://vcpkg.io/en/getting-started.html
               
               ).
              
              
               1.2.在x64静态配置上安装依赖项。
              
              vcpkg install gmp:x64-windows-static
vcpkg install mpfr:x64-windows-static
vcpkg install eigen3:x64-windows-static
vcpkg install cgal:x64-windows-static
Clone pygalmesh sources:
git clone https://github.com/nschloe/pygalmesh.git
Add library_dirs=["C:/path/to/vcpkg/installed/x64-windows-static/lib"] to pygalmesh/setup.py (seeModified setup.py在帖子下面，还可以查看替代解决方案). 不要忘了插入你自己的vcpkg位置，而不是我的/path/to/vcpkg。.
建立并安装pygalmesh。
cd pygalmesh
set EIGEN_INCLUDE_DIR=C:/path/to/vcpkg/installed/x64-windows-static/include
pip install .
确保pygalmesh已经安装。
python
>>> import pygalmesh
from pybind11.setup_helpers import Pybind11Extension, build_ext
from setuptools import setup
# https://github.com/pybind/python_example/
ext_modules = [
    Pybind11Extension(
        "_pygalmesh",
        # Sort input source files to ensure bit-for-bit reproducible builds
        # (https://github.com/pybind/python_example/pull/53)
        sorted(
                "src/generate.cpp",
                "src/generate_2d.cpp",
                "src/generate_from_inr.cpp",
                "src/generate_from_off.cpp",
                "src/generate_periodic.cpp",
                "src/generate_surface_mesh.cpp",
                "src/remesh_surface.cpp",
                "src/pybind11.cpp",
        include_dirs=[os.environ.get("EIGEN_INCLUDE_DIR", "/usr/include/eigen3/")],
        # no CGAL libraries necessary from CGAL 5.0 onwards
        libraries=["gmp", "mpfr"],
        # !!! ADD YOUR PATH HERE !!!
        library_dirs=["C:/D/Apps/vcpkg/installed/x64-windows-static/lib"]
if __name__ == "__main__":
    setup(
        cmdclass={"build_ext": build_ext},
        ext_modules=ext_modules,
        zip_safe=False,
替代解决方案