Re: [RFD] optimized versions of openssl
On Wed, Sep 04, 2002 at 10:14:24AM -0400, Michael Stone wrote:
> On Wed, Sep 04, 2002 at 03:35:58PM +0200, Marcelo E. Magallon wrote:
> > The shared library is 179 kB. Why don't you just provide the optimized
> > versions in the same package? Are the any stability/correctness issues
>
> Now for the real overachiever, what would be really cool is if you
> hacked openssl to do *runtime* detection of which optimizations to use.
You can make the linker do most of the work for you. Glibc's linker
tries CPU-specific directory prefixes before looking straight in /lib
or /usr/lib. You could provide small sub-libraries in /usr/lib/sparcv8
(I think that works.... someone should check; I know /lib/686 works on
i386) that contain the optimized code. Then a normal version in
/usr/lib and openssl's main shared library can link to the small
library, trusting the linker to find the right one.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
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