Shared Libraries: Unique to Suns??

[DaviD W. Sanderson]

In article <6835 at auspex.auspex.com> guy at auspex.auspex.com (Guy Harris) writes:
>      S5R4's shared library implementation is derived from SunOS's
>(and also includes the run-time dynamic linking routines "dlopen()",
>"dlsym()", etc. that showed up in SunOS 4.1).

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.  These additional features were then adopted by Sun for later
versions of SunOS.  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.
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