Sender: Rickard Gustafsson <rickard.gustafson@gmail.com>
Date: Mon, 10 Jul 2017 10:20:06 -0400
From: Rickard Gustafsson <rickard@allyourbase.se>
To: yocto@yoctoproject.org
Message-ID: <20170710142006.GA29306@scw-780cb7>
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User-Agent: Mutt/1.6.1 (2016-04-27)
Subject: locale failure during do_rootfs
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I just want to share a solution to a problem.
tl;dr use a supported system to build.

I got the same error as mentioned here: 
https://lists.yoctoproject.org/pipermail/yocto/2017-June/036622.html

[log_check] Failed to set locale, defaulting to C

This is an error that occurs for RPM based systems built with yocto.
It raises from dnf-native when i18n.py is run due to an unfortunate 
error message when an exception is raised when there is a locale 
exception from the line:
dnf.pycomp.setlocale(locale.LC_ALL, '')
which prints:
print('Failed to set locale, defaulting to C', file=sys.stderr)

On some systems this will raise an exception even if locales are 
configured properly, which they should otherwise bitbake would fail 
earlier.

So I found out that problem has to do with that python cannot find the 
build systems locales. I use slackware 14.2 to build and there the 
locales are located in /usr/lib64/locale which seems to not be used by 
python3-native during do_rootfs. On systems supported by yocto they are 
located in /usr/lib/locale. 
Adding locales to /usr/lib/locale and do_rootfs completes without any 
problems.