Got error "subprocess.CalledProcessError: Command 'gcc --version | head -n1' returned non-zero exit status 255."

[KeranLi]

Hi! I got an error "subprocess.CalledProcessError: Command 'gcc --version | head -n1' returned non-zero exit status 255."

The whole information is like:

F:\Anaconda3\envs\openmmlab\python.exe F:/code/openmmlab/mmgeneration/tools/train.py F:\code\openmmlab\mmgeneration\configs\cyclegan\cyclegan_Isgan_id0_resnet_in_blank2raw.py
F:/code/openmmlab/mmgeneration/tools/train.py:98: UserWarning: Setting OMP_NUM_THREADS environment variable for each process to be 1 in default, to avoid your system being overloaded, please further tune the variable for optimal performance in your application as needed.
f'Setting OMP_NUM_THREADS environment variable for each process '
F:/code/openmmlab/mmgeneration/tools/train.py:108: UserWarning: Setting MKL_NUM_THREADS environment variable for each process to be 1 in default, to avoid your system being overloaded, please further tune the variable for optimal performance in your application as needed.
f'Setting MKL_NUM_THREADS environment variable for each process '
'tail' �����ڲ����ⲿ���Ҳ���ǿ����еij���
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'gcc' �����ڲ����ⲿ���Ҳ���ǿ����еij���
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Traceback (most recent call last):
File "F:/code/openmmlab/mmgeneration/tools/train.py", line 228, in
main()
File "F:/code/openmmlab/mmgeneration/tools/train.py", line 179, in main
env_info_dict = collect_env()
File "f:\code\openmmlab\mmgeneration\mmgen\utils\collect_env.py", line 50, in collect_env
gcc = subprocess.check_output('gcc --version | head -n1', shell=True)
File "F:\Anaconda3\envs\openmmlab\lib\subprocess.py", line 411, in check_output
**kwargs).stdout
File "F:\Anaconda3\envs\openmmlab\lib\subprocess.py", line 512, in run
output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command 'gcc --version | head -n1' returned non-zero exit status 255.

Hoping more info about this error!
Thanks!

[plyfager]

Hi @KeranLi, can you run gcc --version | head -n1 and show me the output?

[KeranLi]

Hi @plyfager! the cmd shows 'gcc' 不是内部或外部命令，也不是可运行的程序或批处理文件。Do this mean I have to install gcc and several related packages?

[oschan77]

Same issue for me, any solution?

[LeoXing1996]

This is caused by gcc --version output being different between Windows and Ubuntu.
We will fix this later. A temporary solution is to remove the following lines:

mmgeneration/mmgen/utils/collect_env.py

Lines 50 to 52 in 6bce6ed

	gcc = subprocess.check_output('gcc --version | head -n1', shell=True)
	gcc = gcc.decode('utf-8').strip()
	env_info['GCC'] = gcc

[KeranLi]

Thanks! it works!