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    SubjectRe: Possible GCC contamination of Linux
    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

    Wiget
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