RuntimeError: Error compiling objects for extension

[meixiangzhang]

My original environment was able to run normally, but later my computer had a problem and the environment became unusable. I need to reinstall the environment now, and the installation steps are the same as before. Win10 system installation pytorch 1.7.0, mmcv=1.4.0, mmdetection=2.17.0. But every time it installs mmcv, the following error occurs, and I don't quite understand where the problem lies. I hope you can help me, thank you!

`(BoostingRCNN) PS D:\ZMX\envs\BoostingR-CNN\mmcv-1.4.0> python setup.py build_ext
D:\Anaconda3\envs\BoostingRCNN\lib\site-packages\setuptools\installer.py:30: SetuptoolsDeprecationWarning: setuptools.installer is deprecated. Requirements should be satisfied by a PEP 517 installer.
SetuptoolsDeprecationWarning,
running build_ext
D:\Anaconda3\envs\BoostingRCNN\lib\site-packages\torch\utils\cpp_extension.py:274: UserWarning: Error checking compiler version for cl: 'utf-8' codec can't decode byte 0xd3 in position 0: invalid continuation byte
warnings.warn('Error checking compiler version for {}: {}'.format(compiler, error))
building 'mmcv._ext' extension
creating D:\ZMX\envs\BoostingR-CNN\mmcv-1.4.0\build\temp.win-amd64-3.7
creating D:\ZMX\envs\BoostingR-CNN\mmcv-1.4.0\build\temp.win-amd64-3.7\Release
creating D:\ZMX\envs\BoostingR-CNN\mmcv-1.4.0\build\temp.win-amd64-3.7\Release\mmcv
creating D:\ZMX\envs\BoostingR-CNN\mmcv-1.4.0\build\temp.win-amd64-3.7\Release\mmcv\ops
creating D:\ZMX\envs\BoostingR-CNN\mmcv-1.4.0\build\temp.win-amd64-3.7\Release\mmcv\ops\csrc
creating D:\ZMX\envs\BoostingR-CNN\mmcv-1.4.0\build\temp.win-amd64-3.7\Release\mmcv\ops\csrc\pytorch
creating D:\ZMX\envs\BoostingR-CNN\mmcv-1.4.0\build\temp.win-amd64-3.7\Release\mmcv\ops\csrc\pytorch\cpu
creating D:\ZMX\envs\BoostingR-CNN\mmcv-1.4.0\build\temp.win-amd64-3.7\Release\mmcv\ops\csrc\pytorch\cuda
Emitting ninja build file D:\ZMX\envs\BoostingR-CNN\mmcv-1.4.0\build\temp.win-amd64-3.7\Release\build.ninja...
Compiling objects...
Using envvar MAX_JOBS (4) as the number of workers...
ninja: error: build.ninja:3: lexing error

Traceback (most recent call last):
File "D:\Anaconda3\envs\BoostingRCNN\lib\site-packages\torch\utils\cpp_extension.py", line 1522, in _run_ninja_build
env=env)
File "D:\Anaconda3\envs\BoostingRCNN\lib\subprocess.py", line 512, in run
output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['ninja', '-v', '-j', '4']' returned non-zero exit status 1.

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

Traceback (most recent call last):
File "setup.py", line 382, in
zip_safe=False)
File "D:\Anaconda3\envs\BoostingRCNN\lib\site-packages\setuptools_init_.py", line 153, in setup
return distutils.core.setup(**attrs)
File "D:\Anaconda3\envs\BoostingRCNN\lib\distutils\core.py", line 148, in setup
dist.run_commands()
File "D:\Anaconda3\envs\BoostingRCNN\lib\distutils\dist.py", line 966, in run_commands
self.run_command(cmd)
File "D:\Anaconda3\envs\BoostingRCNN\lib\distutils\dist.py", line 985, in run_command
cmd_obj.run()
File "D:\Anaconda3\envs\BoostingRCNN\lib\site-packages\setuptools\command\build_ext.py", line 79, in run
_build_ext.run(self)
File "D:\Anaconda3\envs\BoostingRCNN\lib\distutils\command\build_ext.py", line 340, in run
self.build_extensions()
File "D:\Anaconda3\envs\BoostingRCNN\lib\site-packages\torch\utils\cpp_extension.py", line 653, in build_extensions
build_ext.build_extensions(self)
File "D:\Anaconda3\envs\BoostingRCNN\lib\distutils\command\build_ext.py", line 449, in build_extensions
self._build_extensions_serial()
File "D:\Anaconda3\envs\BoostingRCNN\lib\distutils\command\build_ext.py", line 474, in _build_extensions_serial
self.build_extension(ext)
File "D:\Anaconda3\envs\BoostingRCNN\lib\site-packages\setuptools\command\build_ext.py", line 202, in build_extension
_build_ext.build_extension(self, ext)
File "D:\Anaconda3\envs\BoostingRCNN\lib\distutils\command\build_ext.py", line 534, in build_extension
depends=ext.depends)
File "D:\Anaconda3\envs\BoostingRCNN\lib\site-packages\torch\utils\cpp_extension.py", line 635, in win_wrap_ninja_compile
with_cuda=with_cuda)
File "D:\Anaconda3\envs\BoostingRCNN\lib\site-packages\torch\utils\cpp_extension.py", line 1238, in _write_ninja_file_and_compile_objects
error_prefix='Error compiling objects for extension')
File "D:\Anaconda3\envs\BoostingRCNN\lib\site-packages\torch\utils\cpp_extension.py", line 1538, in _run_ninja_build
raise RuntimeError(message) from e
RuntimeError: Error compiling objects for extension`

[mousecpn]

Sorry, I have no idea what is going on.
Maybe you can contact mmdet team to help you.
Or you may try the new version of mmdet. Maybe it works.

[meixiangzhang]

Okay, thank you!