[Buildroot] Sparc Leon support in Buildroot

[Andreas Larsson <andreas@gaisler.com>]

On 2014-07-01 20:22, Thomas Petazzoni wrote:
> Hello Konrad,
>
> Back in 2010, you contributed a number of patches to Buildroot to
> support the Sparc Leon processors. It turns out that today, those
> processors are the only one still needing gcc 4.4.x:
>
>          prompt "GCC compiler Version"
>          default BR2_GCC_VERSION_4_4_X if BR2_sparc_sparchfleon || BR2_sparc_sparchfleonv8 || BR2_sparc_sparcsfleon || BR2_sparc_sparcsfleonv8
>          default BR2_GCC_VERSION_4_2_2_AVR32_2_1_5 if BR2_avr32
>          default BR2_GCC_VERSION_4_7_X if BR2_sparc
>          default BR2_GCC_VERSION_4_8_ARC if BR2_arc
>          default BR2_GCC_VERSION_4_9_X if BR2_microblaze || BR2_powerpc64le
>          default BR2_GCC_VERSION_4_5_X if BR2_bfin
>          default BR2_GCC_VERSION_4_8_X
>
> Do you know if there's any reason to still keep gcc 4.4 for those
> processors? Wasn't the support for Sparc Leon merged in upstream gcc?
>  From https://sourceware.org/ml/crossgcc/2011-12/msg00004.html, I see
> that some patches were still needed for gcc 4.6, but according to
> https://gcc.gnu.org/onlinedocs/gcc/SPARC-Options.html, Sparc Leon
> processors seem to be supported.
>
> According to https://gcc.gnu.org/gcc-4.6/changes.html, the Sparc Leon
> supported was merged in gcc 4.6: "GCC now supports the LEON series of
> SPARC V8 processors. The code generated by the compiler can either be
> tuned to it by means of the --with-tune=leon configure option and
> -mtune=leon compilation option, or the compiler can be built for the
> sparc-leon-{elf,linux} and sparc-leon3-{elf,linux} targets directly.".
>
> Could you update us on the Sparc Leon support, and maybe submit some
> patches to Buildroot to make the relevant changes?


Hi!

I am looking into this and will submit some patches.

Best regards,

Andreas Larsson
Software Engineer
Aeroflex Gaisler AB
Aeroflex Microelectronic Solutions ? HiRel
Kungsgatan 12
SE-411 19 Gothenburg, Sweden
Phone: +46 31 7758669
andreas at gaisler.com
www.Aeroflex.com/Gaisler