Messages in this thread | | | Date | Mon, 20 Sep 1999 17:07:38 +0200 | From | Artur Frysiak <> | Subject | Re: Possible GCC contamination of Linux |
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On Mon, 20 Sep 1999, Richard B. Johnson wrote:
> > Hello, > I spent the weekend trying to track down the reason why Linux (any > recent version), complied for a 486-SX (no FPU), will not boot. > It crashes during startup, about the time it looks for a PCI bus. > > The C Compiler (version 2.8.1) was compiled on a i686 machine. If I > recompile on a '486, it will generate a Linux image that boots okay. > > So it looks as though the C Compiler, compiled on a 686, generates 686 > machine-code instructions. I don't think this is the correct behavior > because the gcc command-line contains -m486. > > So, is there the possibility that something from the gcc library gets > linked into the kernel? If so, how would I prevent it from happening?
Probably bug in gcc. Please add -mcpu=i486 and recompile Linux kernel on i686. If works add this as workaround for i386 arch.
On gcc 2.95.1 on i586 -m486 is equivalent to -m486 -mcpu=i486
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