Re: Finding the pqlib version

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Christoph Zwerschke <cito(at)online(dot)de>
Cc: pgsql-interfaces(at)postgresql(dot)org
Subject: Re: Finding the pqlib version
Date: 2006-02-12 01:58:30
Message-ID: 200602120158.k1C1wUC12064@candle.pha.pa.us
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Christoph Zwerschke wrote:
> Bruce Momjian wrote:
> > I was wondering that myself. I am thinking you would need to use
> > dlopen() to check for the symbol. Because the libpq version could
> > change after you compile, I can't see how you could make it a
> > configure check unless you said you don't allow changes to libpq
> > after the build.
>
> The situation I was talking about is that you have a pre-compiled Python
> and PostgreSQL installed on your system, together with their header
> files, but you do not have the full source of Python and PostgreSQL
> available. I want to be able to compile PyGreSQL as a Python extension
> which is using functions from the python.dll and the libpq.dll, assuming
> that the installed header files match the installed dlls.

Right, but assume you want to distribute that binary to others who might
have a different version of libpq. This is required by packagers and a
run-time test is best in those cases.

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