Problems building arc-2016.09-eng007 toolchain with 2.6.35 kernel headers

[Vineet Gupta]

On 08/08/2016 02:44 PM, Petri Gynther wrote:
> uclibc-ng & ARC developers:
>
> I'm trying to use buildroot to build the latest ARC toolchain
> (arc-2016.09-eng007) against our vendor-provided 2.6.35.12 ARC Linux
> kernel. (Yes, it is an ancient kernel, but that's what I have to work
> with for now, unfortunately.)
>
> ...
>
>
> Questions:
> 1) Does the latest ARC toolchain use some new ABI for binaries that
> makes them incompatible with 2.6.35.12 kernel?

Indeed even if you were to build it successfully - you will run into ABI issues -
2.6.35 is ABI v1 and we are currently at v3 (which is going to change soon even
further to v4 - for ARC HS processors)
More details at:
https://github.com/foss-for-synopsys-dwc-arc-processors/linux/wiki/ARC-Linux-Syscall-ABI-Compatibility

> 2) Is uclibc-ng 1.0.17 supposed to be compatible with 2.6.x kernel headers?

No - modern/upstream uClibc-ng is not compatible with 2.6.35
You need to use the uClibc of the time - with pairing gcc/binutils - although that
will be a can of worms

> Any help is greatly appreciated. Thanks.

Sorry - can't help you much here !

-Vineet