Python compilation error: "LONG_BIT definition for platform is incorrect"

Question

This error message is unknown, I have already reinstalled many packages, but have not yet found a solution.

I get the following error from the command pip install cryptography

/usr/include/python2.7/pyport.h:849:2: error: #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."

#error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."

^

At the end of the long passage it is said:

distutils.errors.DistutilsError: Setup script exited with error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

----------------------------------------
Cleaning up...
Command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/cryptography/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-xXOpFq-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_root/cryptography
Storing debug log for failure in /root/.pip/pip.log

python-dev, python2.7-dev and python3-dev exist.

Answer 1

Make sure you have the correct bits set for python. In my case, I installed 32-bit anaconda python on 64-bit processors, which caused this problem. Installing the correct version of the bit for Python fixed it.