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Adjust with-system-tzdata patch to not attempt to install a symlink,

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but just hardwire the specified timezone database path into the executable.
Per discussion, this avoids some packaging disadvantages of using a
symlink.
This commit is contained in:
Tom Lane
2007-08-25 20:29:25 +00:00
parent 75d091a0d7
commit 75d5f6fe79
3 changed files with 43 additions and 30 deletions
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38
doc/src/sgml/installation.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/installation.sgml,v 1.291 2007/08/20 08:53:12 petere Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/installation.sgml,v 1.292 2007/08/25 20:29:25 tgl Exp $ -->
<chapter id="installation">
<title><![%standalone-include[<productname>PostgreSQL</>]]>
@ -1028,20 +1028,21 @@ su - postgres
</indexterm>
<listitem>
<para>
PostgreSQL includes its own time zone database, which it
requires for date and time operations. This time zone
database is in fact compatible with the time zone database
provided by many operating systems such as FreeBSD, Linux,
and Solaris, so it would be redundant to install it again.
When this option is used, the operating system supplied time
zone database in <replaceable>DIRECTORY</replaceable> is used
instead of the one included in the PostgreSQL source
distribution. <filename>/usr/share/zoneinfo/</filename> is a
<productname>PostgreSQL</> includes its own time zone database,
which it requires for date and time operations. This time zone
database is in fact compatible with the <quote>zic</> time zone
database provided by many operating systems such as FreeBSD,
Linux, and Solaris, so it would be redundant to install it again.
When this option is used, the system-supplied time zone database
in <replaceable>DIRECTORY</replaceable> is used instead of the one
included in the PostgreSQL source distribution.
<replaceable>DIRECTORY</replaceable> must be specified as an
absolute path. <filename>/usr/share/zoneinfo</filename> is a
likely directory on some operating systems. Note that the
installation routine does not detect mismatching or erroneous
time zone data. You are advised to run the regression tests
to verify that the time zone data you have pointed to works
correctly.
installation routine will not detect mismatching or erroneous time
zone data. If you use this option, you are advised to run the
regression tests to verify that the time zone data you have
pointed to works correctly with <productname>PostgreSQL</>.
</para>
<para>
@ -1049,11 +1050,10 @@ su - postgres
who know their target operating system well. The main
advantage of using this option is that the PostgreSQL package
won't need to be upgraded whenever any of the many local
daylight-saving time rules changes. Another completely
incidental advantage is that PostgreSQL can be
cross-compiled<indexterm><primary>cross
compilation</primary></indexterm> straightforwardly if the
time-zone database does not need to be built during the
daylight-saving time rules change. Another advantage is that
PostgreSQL can be cross-compiled<indexterm><primary>cross
compilation</primary></indexterm> more straightforwardly if the
time zone database files do not need to be built during the
installation.
</para>
</listitem>