Detected architecture is 64 in docker x32

[lasote]

To help us debug your issue please explain:

• I've read the CONTRIBUTING guide.
• I've specified the Conan version, operating system version and any tool that can be relevant.
• I've explained the steps to reproduce the error or the motivation/use case of the question/suggestion.

Latest Conan. Both the detect and the code that uses Autotools helper to set the --build parameter is missdetecting the arch. Not a new issue but raised again for the autotools use case.

Latest investigations pointed to kernel of 64 (shared by docker)

[lasote]

Note: it has a workaround in the configure method of the autotools helper to avoid the --build flag,with the "build=False". So it is not a blocked for the creator, but could be a problem for the consumer.

[lasote]

clang/gcc -dumpmachine could be a possibility, but it could be tricky because "CC" could be pointed to a cross builder, so it would depend if we are detecting default arch or default arch_build

[jgsogo]

Just a couple of related issues (I know almost nothing about docker):

• uname -m shows wrong architecture docker-32bit/ubuntu#12, which leads me to the next one
• Linux personality (reported ex. via uname -m) is wrong ioft/dockerhub#1 (comment)

[lasote]

I've updated the docker images (x86) with the suggestion of the link you posted and it worked like a charm. The images are currently being regenerated and uploaded, so I think we can close this issue.
For future issues, add to the dockerfile:

ENTRYPOINT ["linux32", "--"]