Re: gcc, march and sse

To: joel%carnat.net@localhost
Subject: Re: gcc, march and sse
From: Johnny Billquist <bqt%softjar.se@localhost>
Date: Wed, 03 Dec 2008 17:51:56 +0100

Joel Carnat wrote:

Hello,

I read that Slackware Linux compiles most of its packages with
"-march=i486 -mtune=i686". As far as I understood gcc's manpage, this
means "keep code compatible with 486 CPU but allow the use pentiumpro
special features", right ?

By using pentiumpro special features, you are not compatible with the486 CPU.


That should be obvious from just saying it out loud.

        Johnny

References:
- gcc, march and sse
  - From: Joel Carnat

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