Error in Building the Docker Container

Hi,
Thank you for the codebase. I am trying to run the model (https://github.com/isl-org/lang-seg) which requires torch-encoding. For my research I need to build a singularity container from a docker image and add any further dependencies to the singularity.

Currently, to ensure that I have correct environment I decided to compile the docker provided here and then convert it to the singularity.

When running bash scripts/build_docker.sh , I get the following error:

ninja: build stopped: subcommand failed.
Traceback (most recent call last):
File "/opt/conda/lib/python3.6/site-packages/torch/utils/cpp_extension.py", line 1471, in _run_ninja_build
check=True)
File "/opt/conda/lib/python3.6/subprocess.py", line 438, in run
output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['ninja', '-v']' returned non-zero exit status 1.

During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "setup.py", line 125, in
cmdclass={"build_ext": torch.utils.cpp_extension.BuildExtension},
File "/opt/conda/lib/python3.6/site-packages/setuptools/init.py", line 161, in setup
return distutils.core.setup(**attrs)
File "/opt/conda/lib/python3.6/distutils/core.py", line 148, in setup
dist.run_commands()
File "/opt/conda/lib/python3.6/distutils/dist.py", line 955, in run_commands
self.run_command(cmd)
File "/opt/conda/lib/python3.6/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/opt/conda/lib/python3.6/site-packages/setuptools/command/develop.py", line 38, in run
self.install_for_development()
File "/opt/conda/lib/python3.6/site-packages/setuptools/command/develop.py", line 140, in install_for_development
self.run_command('build_ext')
File "/opt/conda/lib/python3.6/distutils/cmd.py", line 313, in run_command
self.distribution.run_command(command)
File "/opt/conda/lib/python3.6/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/opt/conda/lib/python3.6/site-packages/setuptools/command/build_ext.py", line 87, in run
_build_ext.run(self)
File "/opt/conda/lib/python3.6/site-packages/Cython/Distutils/old_build_ext.py", line 186, in run
_build_ext.build_ext.run(self)
File "/opt/conda/lib/python3.6/distutils/command/build_ext.py", line 339, in run
self.build_extensions()
File "/opt/conda/lib/python3.6/site-packages/torch/utils/cpp_extension.py", line 633, in build_extensions
build_ext.build_extensions(self)
File "/opt/conda/lib/python3.6/site-packages/Cython/Distutils/old_build_ext.py", line 194, in build_extensions
self.build_extension(ext)
File "/opt/conda/lib/python3.6/site-packages/setuptools/command/build_ext.py", line 208, in build_extension
_build_ext.build_extension(self, ext)
File "/opt/conda/lib/python3.6/distutils/command/build_ext.py", line 533, in build_extension
depends=ext.depends)
File "/opt/conda/lib/python3.6/site-packages/torch/utils/cpp_extension.py", line 462, in unix_wrap_ninja_compile
with_cuda=with_cuda)
File "/opt/conda/lib/python3.6/site-packages/torch/utils/cpp_extension.py", line 1211, in _write_ninja_file_and_compile_objects
error_prefix='Error compiling objects for extension')
File "/opt/conda/lib/python3.6/site-packages/torch/utils/cpp_extension.py", line 1484, in _run_ninja_build
raise RuntimeError(message)
RuntimeError: Error compiling objects for extension

Any clue as to what am I missing here. Should I have some library on my system to build the docker ? I am stuck on this issue for more than a week!

Looking forward to your reply.
Best Regards,
Pramit

Start with scripts/build_docker.sh and setup.py, then reproduce the container build while capturing the compiler output preceding the reported ninja failure. Check how the torch C++ extension is built in that path; done means the Docker image builds successfully.