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From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.unix.wizards
Subject: Re: Shared Libraries: Unique to Suns??
Message-ID: <6926@auspex.auspex.com>
Date: 31 Mar 91 00:03:40 GMT
References: <1991Mar21.035115.21842@NCoast.ORG> <6835@auspex.auspex.com> <1991Mar27.034045.13619@spool.cs.wisc.edu>
Organization: Auspex Systems, Santa Clara
Lines: 15

>This is not entirely true.  Yes, the SVR4 dynamic shared libraries
>began with the SunOS shared libraries.  But the programming interface
>(dlopen() et al) and many performance improvements were done at AT&T
>for SVR4.

The implementations of "dlopen()" and company were, as I remember, a bit
different, even though the interfaces were compatible.  Was the
interface was originally done by AT&T? (I've asked Rob Gingell as
well....)

>I don't know for sure how much of the AT&T code Sun wound up using, since
>I don't know if the latest SunOS shared libraries are in ELF format, as
>the AT&T ones are.

SunOS 4.1 doesn't use ELF.