Date: Thu, 31 Mar 2022 16:01:27 +0200
From: Christoph Berg <myon@debian.org>
To: hubert depesz lubaczewski <depesz@depesz.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>,
	PostgreSQL General <pgsql-general@lists.postgresql.org>,
	Andres Freund <andres@anarazel.de>,
	PostgreSQL in Debian <pgsql-pkg-debian@postgresql.org>
Subject: PostgreSQL on focal and llvm version
Message-ID: <YkW0Nz4xcjG/PvF3@msg.df7cb.de>
Mail-Followup-To: Christoph Berg <myon@debian.org>,
	hubert depesz lubaczewski <depesz@depesz.com>,
	Tom Lane <tgl@sss.pgh.pa.us>,
	PostgreSQL General <pgsql-general@lists.postgresql.org>,
	Andres Freund <andres@anarazel.de>,
	PostgreSQL in Debian <pgsql-pkg-debian@postgresql.org>
References: <20220303150428.GA26036@depesz.com>
 <20220303151156.GB26036@depesz.com>
 <20220303163921.GA10776@depesz.com>
 <20220303164401.GA13056@depesz.com>
 <3969790.1646420992@sss.pgh.pa.us>
 <20220304204510.GA21340@depesz.com>
 <3984384.1646431394@sss.pgh.pa.us>
 <20220306140402.GA6360@depesz.com>
 <2045.1646583000@sss.pgh.pa.us>
 <20220307151128.GA22074@depesz.com>
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Re: hubert depesz lubaczewski
> Soo... plot thickens.
> 
> Looks that pg 12 supplied by pgdg required libllvm9:
> 
> =$ apt-cache show postgresql-12 | grep -E '^(Package|Version|Depends):'
> Package: postgresql-12
> Version: 12.9-2.pgdg20.04+1
> Depends: ..., libllvm9 (>= 1:9~svn298832-1~), ...
> 
> Package: postgresql-12
> Version: 12.9-0ubuntu0.20.04.1
> Depends: ..., libllvm10 (>= 1:9~svn298832-1~), ...
> 
> Package: postgresql-12
> Version: 12.2-4
> Depends: ..., libllvm10 (>= 1:9~svn298832-1~), ...
> 
> 
> Newer pg12 (12.10) from pgdg also depends on llvm9. Perhaps changing the deb to
> use/depend-on llvm10 would solve the problem, for now I'm not sure how to do
> it. Reached to Christoph about it.

Thanks for spotting that. The problem turned out me being not smart
enough to determine the newest llvm version installed; the
not-quite-correct Makefile code failed on "9" < "10".

I have now fixed that problem. Updated postgresql-{11,12,13,14}
packages using libllvm10 instead of libllvm9 are available in
focal-pgdg-testing.

Since this is potentially a breaking change, I'll not push these live
immediately but will give people a chance to test these until next
week.

Christoph