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Different lib versions in the same system (was Re: [PATCH] 64-bit curl_off_t no longer gated to off_t)

From: Daniel Stenberg <>
Date: Tue, 5 Aug 2008 20:21:08 +0200 (CEST)

On Mon, 4 Aug 2008, Yang Tse wrote:

> How do 'people' handle having several versions, with different ABI, of the
> same library installed on a system so that the user can choose at will which
> one to use ?

I don't know of any systems that keep them around to let the user pick. The
older ones are just left at times to let already built programs remain
functional, but newly built programs (typically) just use the latest and

> And if each version, additionally, has incompatible public header files ?

Following the above logic, the installed headers are then only for the latest
version that new programs use. The ones that are compiled now.

Received on 2008-08-05