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doc: PQinitOpenSSL and PQinitSSL are obsolete in OpenSSL 1.1.0+

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Starting with OpenSSL 1.1.0 there is no need to call PQinitOpenSSL
or PQinitSSL to avoid duplicate initialization of OpenSSL.  Add a
note to the documentation to explain this.

Backpatch to all supported versions as older OpenSSL versions are
equally likely to be used for all branches.

Reported-by: Sebastien Flaesch <sebastien.flaesch@4js.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/DBAP191MB12895BFFEC4B5FE0460D0F2FB0459@DBAP191MB1289.EURP191.PROD.OUTLOOK.COM
Backpatch-through: 11, all supported versions
This commit is contained in:
Daniel Gustafsson 2023-04-14 10:15:50 +02:00
parent 12829058c4
commit 928e05ddfd
1 changed files with 2 additions and 0 deletions
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doc/src/sgml/libpq.sgml
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@ -9041,6 +9041,8 @@ ldap://ldap.acme.com/cn=dbserver,cn=hosts?pgconnectinfo?base?(objectclass=*)
that the <literal>libssl</literal> and/or <literal>libcrypto</literal> libraries that the <literal>libssl</literal> and/or <literal>libcrypto</literal> libraries
have been initialized by your application, so that have been initialized by your application, so that
<application>libpq</application> will not also initialize those libraries. <application>libpq</application> will not also initialize those libraries.
However, this is unnecessary when using <productname>OpenSSL</productname>
version 1.1.0 or later, as duplicate initializations are no longer problematic.
</para> </para>
<para> <para>