Re: [PATCH] build.sh: Fix perl complaints about locale

[Alexander Smirnov <asmirnov@ilbers.de>]

On 11/21/2017 11:42 AM, Henning Schild wrote:
> Am Fri, 17 Nov 2017 13:42:05 +0300
> schrieb Alexander Smirnov <asmirnov@ilbers.de>:
> 
>> Hi,
>>
>> On 11/13/2017 03:21 PM, Christian Storm wrote:
>>> The log.do_build is flooded by perl's locale complaints:
>>>
>>>       perl: warning: Setting locale failed.
>>>       perl: warning: Please check that your locale settings:
>>>               LANGUAGE = (unset),
>>>               LC_ALL = "en_US.UTF-8",
>>>               LANG = (unset)
>>>           are supported and installed on your system.
>>>       perl: warning: Falling back to the standard locale ("C").
>>>
>>> Make perl happy by explicitly giving it the C locale.
>>>
>>> Signed-off-by: Christian Storm <christian.storm@siemens.com>
>>> ---
>>>    meta/recipes-devtools/buildchroot/files/build.sh | 2 +-
>>>    1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/meta/recipes-devtools/buildchroot/files/build.sh
>>> b/meta/recipes-devtools/buildchroot/files/build.sh index
>>> 19d554e..e53d359 100644 ---
>>> a/meta/recipes-devtools/buildchroot/files/build.sh +++
>>> b/meta/recipes-devtools/buildchroot/files/build.sh @@ -23,4 +23,4
>>> @@ for i in configure aclocal.m4 Makefile.am Makefile.in; do done
>>>    
>>>    # Build the package
>>> -dpkg-buildpackage
>>> +LC_ALL=C LANGUAGE=C LANG=C dpkg-buildpackage
>>>    
>>
>> short question, does LC_ALL override LANG value?
> 
> No. Try "LC_ALL=C locale", as the name says it overrides LC_*. But you
> are right LC_ALL might be enough to get rid of the warnings.

I'm asking because it's not so clear for me. What I've got from various 
links, LC_ALL overrides LANG:

https://docs.oracle.com/cd/E23824_01/html/E26033/glmbx.html

...
  If the LC_ALL environment variable is set, it overrides LANG and all 
the separate locale categories.
...

https://www.gnu.org/software/gettext/manual/html_node/Locale-Environment-Variables.html

...
LC_ALL is an environment variable that overrides all of these...  As a 
user, you therefore have to unset this variable if you want to set LANG 
and optionally some of the other LC_xxx variables.
...

https://wiki.archlinux.org/index.php/locale#LC_ALL:_troubleshooting

...
The locale set for this variable will always override LANG and all the 
other LC_* variables, whether they are set or not.
...

And so on...

I wonder if there is some reference place where it's strictly defined 
whether or not LC_ALL overrides LAND.

Alex