[fpc-pascal] Defining sonames?

[Sven Barth]

Am 17.08.2017 15:49 schrieb "Graeme Geldenhuys" <
mailinglists at geldenhuys.co.uk>:
>
> On 2017-08-16 18:14, Sven Barth via fpc-pascal wrote:
>>
>> As you can see the program will work correctly as long as the
>> libX11.so.6 file exists (even though that is a symlink itself, but the
>> X11 project guarantees that different libX11.so.6.x.y are compatible to
>> eachother), because the linker picks the SONAME that is set inside the
>> binary. And the libX11.so.6 symlink is part of the non-devel package.
>
>
> Sven, now here is an interesting problem regarding the way FPC (or Object
Pascal in general) works with C based libraries. Martin pointed this out in
another mailing list, and he gave me permission to forward it here. What is
your answer or recommendation to this problem?

Write in your application's readme which versions it requires. It might be
true that the devel packages contain the C-headers, but there might
nevertheless be failures if the applications
is programmed against the interface of the older v1 library (maybe they
changed the memory management for v2 and the problem will only manifest at
runtime).

Regards,
Sven
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