build from source and get UnicodeDecodeError when importing k2

[samgong]

Platform: Win10, cuda11.8 and torch 2.01
I build form source by running python setup.py install
No error occurs. The build seems to be successful.
However, when I import k2 or run python -m k2.version, I get the UnicodeDecodeError.

[csukuangfj]

Could you first remove the following lines

k2/k2/python/csrc/version.cu

Lines 32 to 48 in 7ff6d89

	version.attr("__version__") = std::string(k2::kVersion);
	version.attr("git_sha1") = std::string(k2::kGitSha1);
	version.attr("git_date") = std::string(k2::kGitDate);
	version.attr("cuda_version") = std::string(k2::kCudaVersion);
	version.attr("cudnn_version") = std::string(k2::kCudnnVersion);
	version.attr("python_version") = std::string(k2::kPythonVersion);
	version.attr("build_type") = std::string(k2::kBuildType);
	version.attr("os_type") = std::string(k2::kOS);
	version.attr("cmake_version") = std::string(k2::kCMakeVersion);
	version.attr("gcc_version") = std::string(k2::kGCCVersion);
	version.attr("cmake_cuda_flags") = std::string(k2::kCMakeCudaFlags);
	version.attr("cmake_cxx_flags") = std::string(k2::kCMakeCxxFlags);
	version.attr("torch_version") = std::string(k2::kTorchVersion);
	version.attr("torch_cuda_version") = std::string(k2::kTorchCudaVersion);
	version.attr("enable_nvtx") = k2::kEnableNvtx;
	version.attr("disable_debug") = k2::internal::kDisableDebug;
	version.attr("with_cuda") = k2::kWithCuda;

and re-install k2?

[samgong]

Now it shows

[csukuangfj]

It seems that it fixes the issue.

Instead of removing those lines, you can change std::string() to "" and re-try.

To find out which line causes the issue, you can change them line by line.

[samgong]

It turns out that the string for "os_type" causes this problem, i.e., line 39.

[csukuangfj]

Does your OS name contain special characters?