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SCCS-file: README
SCCS-SID: 4.2
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Arthur David Olson
1989-02-17 20:21:04 -05:00
committed by Paul Eggert
parent 457d06a7f1
commit 0b4f9fe337
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README
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%W%
Please send comments or information to
vax2.nlm.nih.gov!elsie!tz
for forwarding to folks interested in time zone matters.
This 1989 update of the time zone package features POSIXization (including
interpretation of POSIX-style TZ environment variables, provided by Guy
Harris), ANSIfication (including a version of "mktime"), corrections to some
time zone data (including corrections to the rules for Great Britain and
New Zealand), reference data from the United States Naval Observatory for
folks who want to do additional time zones, and the 1989 data for Saudi Arabia.
Please send comments or information to ado@ncifcrf.gov.
Be sure to read the comments in "Makefile" and make any changes
needed to make things right for your system.
This version of the time zone software uses a new format
(based on the work of Guy Harris, a.k.a guy@sun.UUCP)
for the time zone information files. They are now stored by default in a
directory named "/etc/zoneinfo" rather than "/etc/tzdir" or "/etc/timezones"
as before. If you've already compiled programs with older time zone software,
just leave the "/etc/tzdir" and/or "/etc/timezones" files around until you
have a chance to recompile.
For better compatability with other versions of time conversion functions,
the time zone abbreviation to be used with localtime's return value is now
pointed to by one of the two elements of the (char *) array tzname, rather
than by the (char *) tz_abbr. If you have code that uses tz_abbr, add a
-DTZA_COMPAT
to the end of the
CFLAGS=
line in "Makefile".
To use the new functions, use a "-lz" option when compiling or linking.
Historical local time information has been included here not because it
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The information in the time zone data files is by no means authoritative;
if you know that the rules are different from those in a file, by all means
feel free to change file (and please send the changed version to
vax2.nlm.nih.gov!elsie!tz for use in the future). Europeans take note!
ado@ncifcrf.gov for use in the future). Europeans take note!
Folks who've made major contributions to the time zone package include
Keith Bostic, Bob Devine, Robert Elz, Guy Harris, John Mackin, Mark Horton,
and Bradley White. None of them are responsible for the remaining errors.