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Re: More ARM binutils fuckage

On Tue, 5 Dec 2006, Khem Raj wrote:

> I guess there are two things here.
> 
> 1. The kernel is capable of running EABI binaries.
> 
> For this case you do not require a EABI toolchain so configuring gcc with
> arm*-*-linux-gnu would do.

Exact.

> 2. Kernel itself it compiled as EABI binary.
> 
> This would need a complete EABI toolchain. (configure with
> arm*-*-linux-gnueabi )

Untrue.

First, for the kernel to be able to execute EABI binaries, it must 
itself be an EABI binary.  So (1) implies(2).

But because the kernel is self contained, i.e. it doesn't need any 
external libraries besides those provided a part of the kernel source 
itself (not even libgcc.a), you actually don't need a gcc that is fully 
configured for EABI.  The kernel compilation always provides gcc with 
the explicit ABI flag and therefore resulting binary will have the 
needed ABI characteristics.


Nicolas

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