Re: Finding the pqlib version

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От Bruce Momjian
Тема Re: Finding the pqlib version
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Msg-id 200602120158.k1C1wUC12064@candle.pha.pa.us
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Ответ на Re: Finding the pqlib version  (Christoph Zwerschke <cito@online.de>)
Ответы Re: Finding the pqlib version  (Christoph Zwerschke <cito@online.de>)
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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.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
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