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From: mahendrakar s <[email protected]>
To: pgsql-novice <[email protected]>
To: [email protected]
Subject: Re: using libjansson in postgres extension
Date: Fri, 24 Feb 2023 07:29:23 +0530
Message-ID: <CABkiuWpS0d24E4rZV9WhWuWM6BBgi3P3pti5seuAgKOkhVJ7TA@mail.gmail.com> (raw)
In-Reply-To: <CABkiuWpifg0tA_odWOXMXcJEQ8ghk3n+amEFB_0Dg33fEmR6TA@mail.gmail.com>
References: <CABkiuWpifg0tA_odWOXMXcJEQ8ghk3n+amEFB_0Dg33fEmR6TA@mail.gmail.com>

+andrew.
Thoughts?

On Thu, 23 Feb 2023 at 19:08, mahendrakar s <[email protected]>
wrote:

> Hello Hackers,
>
> I'm developing an extension where in it indirectly references (libjansson)
> and libjansson has a symbol json_object
> <https://github.com/akheron/jansson/blob/master/src/load.c#:~:text=json_t%20*object%20%3D%20json_obje...
> conflicts with postgres  symbol 'json_object
> <https://github.com/postgres/postgres/blob/master/src/backend/utils/adt/json.c#:~:text=json_object(PG...;
> '.
>
> I see below:
> PostgreSQL: Documentation: 11: 38.10. C-Language Functions
> <https://www.postgresql.org/docs/11/xfunc-c.html#id-1.8.3.13.8;
> "Symbol names defined within object files must not conflict with each
> other or with symbols defined in the PostgreSQL server executable. You will
> have to rename your functions or variables if you get error messages to
> this effect."
>
> But this requires to maintain libjansson with customizations(have a
> different symbol) to meet the needs.
>
> Do you have any suggestions to use the libjansson 'as it is' without using
> the different symbol.
>
> Thanks,
> Mahendrakar.
>
>
>

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