Python - 从本地目录安装时安装构建轮错误

Question

我想从 GitHub 安装一个使用 Cython (https://github.com/mlysy/kalmantv) 的包。我在本地克隆了该软件包，并尝试使用pip install . 安装它后，出现以下错误：

DEPRECATION: A future pip version will change local packages to be built in-place without first copying to a temporary directory. We recommend you use --use-feature=in-tree-build to test your packages with this new behavior before it becomes the default.
   pip 21.3 will remove support for this functionality. You can find discussion regarding this at https://github.com/pypa/pip/issues/7555.
Processing /Users/me/Downloads/kalmantv
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  ERROR: Command errored out with exit status 1:
   command: /Users/me/.pyenv/versions/3.8.3/bin/python3.8 /Users/me/.pyenv/versions/3.8.3/lib/python3.8/site-packages/pip/_vendor/pep517/in_process/_in_process.py get_requires_for_build_wheel /var/folders/g1/0pjsd_bs24jgccrd6g0lzfvc0000gn/T/tmpxmrdlgnk
       cwd: /Users/me/Downloads/kalmantv
  Complete output (6 lines):
  running egg_info
  writing kalmantv.egg-info/PKG-INFO
  writing dependency_links to kalmantv.egg-info/dependency_links.txt
  writing requirements to kalmantv.egg-info/requires.txt
  writing top-level names to kalmantv.egg-info/top_level.txt
  error: package directory 'eigen-3.3.7' does not exist
  ----------------------------------------
WARNING: Discarding file:///Users/me/Downloads/kalmantv. Command errored out with exit status 1: /Users/me/.pyenv/versions/3.8.3/bin/python3.8 /Users/me/.pyenv/versions/3.8.3/lib/python3.8/site-packages/pip/_vendor/pep517/in_process/_in_process.py get_requires_for_build_wheel /var/folders/g1/0pjsd_bs24jgccrd6g0lzfvc0000gn/T/tmpxmrdlgnk Check the logs for full command output.
ERROR: Command errored out with exit status 1: /Users/me/.pyenv/versions/3.8.3/bin/python3.8 /Users/me/.pyenv/versions/3.8.3/lib/python3.8/site-packages/pip/_vendor/pep517/in_process/_in_process.py get_requires_for_build_wheel /var/folders/g1/0pjsd_bs24jgccrd6g0lzfvc0000gn/T/tmpxmrdlgnk Check the logs for full command output.

我尝试从弃用警告中添加--use-feature=in-tree-build，但仍然出现错误（没有初始警告）。

我看到了许多建议，例如使用 pip install --upgrade pip setuptools wheel，但没有任何效果。我猜这有一个简单的解决方法，但是这东西有点过头了，我不想破坏其他任何东西。

我需要做些什么来安全地纠正这个问题而不引起其他问题？

Answer 1

setup.py 文件包含以下几行：

# path to eigen library
EIGEN_PATH = r"eigen-3.3.7"

奇怪的是，似乎期望 Eigen 头库出现在该位置。您可以使用brew install eigen 或sudo apt install libeigen3-dev 安装库。请注意，这可能不会安装项目期望的库的 3.3.7 版本。我不知道使用较新的版本是否会导致任何问题。

如果您想安装 3.3.7 版本，您可以通过以下链接从源代码构建和安装它，并关注 these instructions:

https://gitlab.com/libeigen/eigen/-/releases/3.3.7

完成后，切换到项目目录，并创建一个指向 Eigen 库的符号链接：

如果使用 brew 安装：ln -s /usr/local/Cellar/eigen/*/include/eigen3 eigen-3.3.7

如果使用 apt 安装：ln -s /usr/include/eigen3 eigen-3.3.7

如果从源安装：/usr/local/include/eigen3 eigen-3.3.7

一旦 Eigen 库安装并在 ./eigen-3.3.7 可用，pip install . 应该可以工作，但为了更好的措施，您应该首先运行以下命令：

pip install -U pip setuptools wheel; pip install -U cython

如果遇到如下错误，请参阅Catalina C++: Using <cmath> headers yield error: no member named 'signbit' in the global namespace：error: no member named 'signbit' in the global namespace。