Re: [Mingw-users] Setting the time zone

[Ilana L. <il...@is...>]

Tor Lillqvist wrote:
> Or try Cygwin? Does Cygwin implement full-fledged modern Unix-like
> timezone stuff?

Yes, it looked as if Cygwin was handling time zone in the same way as Linux=
=2E =20
The only problem is that the Cygwin lib(s) are covered by the GNU GPL licen=
ce=20
and we would have to make our source available.

> Get suitable code for timezone handling and include in your code?
> Would for example the original public domain Olson code be portable to
> Windows? Or use the Win32 API directly and forget the TZ environment
> variable and the C library's local time related functions.

As I am not a Windows C programmer, I tried first porting the Olson code.  =
I=20
had to remove the symbolic links and make a few other minor changes.  The =
=20
port looks OK except that tzname[0] is set incorrectly. =A0But for now I ca=
n=20
live with that.

When compiling the code, a static library libtz.a is created. =A0This  libr=
ary=20
contains replacement time functions including asctime, localtime etc. =20
Linking against this library reports the correct local time when setting TZ=
=20
to e.g. Africa/Johannesburg.

Would it be possible to include this library in the mingw distribution or s=
ome=20
other distribution?

Thanks for the help,
Ilana

=2D-=20
Ilana Loubser
ISS International Limited, Technology Division, Software Engineering=20
P O Box 12063, DIE BOORD 7613, South Africa
Tel: +27 (0)21 809-2091 Fax: +27 (0)21 809-2061
Email: il...@is... Web Page: http://www.issi.co.za

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