detectron2安装报错

Question

D:\anaconda\lib\site-packages\torch\include\torch/csrc/Exceptions.h(14): fatal error C1083: 无法打开包括文件: “pybind11/pybind11.h”: No such file or directory
ninja: build stopped: subcommand failed.
Traceback (most recent call last):
  File "D:\anaconda\lib\site-packages\torch\utils\cpp_extension.py", line 2100, in _run_ninja_build
    subprocess.run(
  File "D:\anaconda\lib\subprocess.py", line 528, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['ninja', '-v']' returned non-zero exit status 1.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<string>", line 2, in <module>
  File "<pip-setuptools-caller>", line 34, in <module>
  File "D:\anaconda\envs\detectron2\detectron2-main\setup.py", line 151, in <module>
    setup(
  File "D:\anaconda\lib\site-packages\setuptools\__init__.py", line 107, in setup
    return distutils.core.setup(**attrs)
  File "D:\anaconda\lib\site-packages\setuptools\_distutils\core.py", line 185, in setup
    return run_commands(dist)
  File "D:\anaconda\lib\site-packages\setuptools\_distutils\core.py", line 201, in run_commands
    dist.run_commands()
  File "D:\anaconda\lib\site-packages\setuptools\_distutils\dist.py", line 969, in run_commands
    self.run_command(cmd)
  File "D:\anaconda\lib\site-packages\setuptools\dist.py", line 1234, in run_command
    super().run_command(command)
  File "D:\anaconda\lib\site-packages\setuptools\_distutils\dist.py", line 988, in run_command
    cmd_obj.run()
  File "D:\anaconda\lib\site-packages\setuptools\command\develop.py", line 34, in run
    self.install_for_development()
  File "D:\anaconda\lib\site-packages\setuptools\command\develop.py", line 111, in install_for_development
    self.run_command('build_ext')
  File "D:\anaconda\lib\site-packages\setuptools\_distutils\cmd.py", line 318, in run_command
    self.distribution.run_command(command)
  File "D:\anaconda\lib\site-packages\setuptools\dist.py", line 1234, in run_command
    super().run_command(command)
  File "D:\anaconda\lib\site-packages\setuptools\_distutils\dist.py", line 988, in run_command
    cmd_obj.run()
  File "D:\anaconda\lib\site-packages\setuptools\command\build_ext.py", line 84, in run
    _build_ext.run(self)
  File "D:\anaconda\lib\site-packages\setuptools\_distutils\command\build_ext.py", line 345, in run
    self.build_extensions()
  File "D:\anaconda\lib\site-packages\torch\utils\cpp_extension.py", line 873, in build_extensions
    build_ext.build_extensions(self)
  File "D:\anaconda\lib\site-packages\setuptools\_distutils\command\build_ext.py", line 467, in build_extensions
    self._build_extensions_serial()
  File "D:\anaconda\lib\site-packages\setuptools\_distutils\command\build_ext.py", line 493, in _build_extensions_serial
    self.build_extension(ext)
  File "D:\anaconda\lib\site-packages\setuptools\command\build_ext.py", line 246, in build_extension
    _build_ext.build_extension(self, ext)
  File "D:\anaconda\lib\site-packages\Cython\Distutils\build_ext.py", line 127, in build_extension
    super(build_ext, self).build_extension(ext)
  File "D:\anaconda\lib\site-packages\setuptools\_distutils\command\build_ext.py", line 548, in build_extension
    objects = self.compiler.compile(
  File "D:\anaconda\lib\site-packages\torch\utils\cpp_extension.py", line 845, in win_wrap_ninja_compile
    _write_ninja_file_and_compile_objects(
  File "D:\anaconda\lib\site-packages\torch\utils\cpp_extension.py", line 1774, in _write_ninja_file_and_compile_objects
    _run_ninja_build(
  File "D:\anaconda\lib\site-packages\torch\utils\cpp_extension.py", line 2116, in _run_ninja_build
    raise RuntimeError(message) from e
RuntimeError: Error compiling objects for extension
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.

Answer 1

【以下回答由 GPT 生成】

### detectron2安装报错解决方案

这个错误是由于在编译detectron2时，无法找到pybind11的头文件而导致的。解决方法如下：

1. 确保你已经安装了pytorch和torchvision。如果没有安装，可以使用以下命令安装：

```bash
pip install torch torchvision

1. 安装pybind11库，可以使用以下命令安装：

pip install pybind11

1. 确保你的环境变量中包含了pybind11的路径。可以在命令行中输入以下命令，找到pybind11的安装路径：

python -c "import pybind11; print(pybind11.get_include())"

1. 将输出的路径添加到你的环境变量中，具体方法因操作系统而异，例如在Windows下你可以在控制面板中设置。

2. 重新编译detectron2，确认已经安装了ninja，然后使用以下命令重新编译：

python -m pip install 'git+https://github.com/facebookresearch/detectron2.git'

重新编译后应该就能成功安装detectron2了。 ```

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