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Re: Daylight Savings

Robert Hibberdine wrote:
> Actually, daylight savings time all works fine within the time stuff in 
> glibc. You just have to set the time zone environment variable TZ.
> See
> http://www.gnu.org/software/libc/manual/html_node/TZ-Variable.html#TZ%20Variable 
> for furhter info.
> I've not tried the time zone database though!

This requires that the time zone database is 
installed, usually found in /usr/share/zoneinfo, 
/usr/local/etc/zoneinfo or /usr/lib/zoneinfo and 
to be able to read the time zone database must the 
tzfile.h functionality be included. Time zone 
information is found in glibc/timezone and time 
zone database can be generated with the time zone 
compiler, zic.

man tzfile
man tzset
man zic
tells more about how to keep accurate date and 
time on a Linux system.

Last time I glanced at the hwlock implementation 
in busybox it lacked vital functionality. Perhaps 
it includes more functionality at the moment and 
can be used to keep accurate  time and date.


> Bob
> Pieter Grimmerink wrote:
>>> -----Original Message-----
>>> From: owner-dev-etrax@xxxxxxx.com]On">mailto:owner-dev-etrax@xxxxxxx.com]On
>>> Behalf Of Dave Matlock
>>> Can the devboard82 handle daylight savings time automatically?  
>> I don't know what exactly is required to make this work;
>> -/etc/localtime timezone description file
>> -timezone aware date/time tools
>> -??
>> As for the timezone aware tools, maybe busybox can be
>> configured to use timezone stuff.
>> Or is the timezone awareness handled internally by glibc?
>> I want to get this working to some day, though it's not
>> the highest thing on my priority list...
>> Regards,
>> Pieter