* Target triplet: sh-elf vs sh1-elf vs sh2-elf
@ 2021-01-20 20:49 John Scott
2021-01-21 0:42 ` Segher Boessenkool
0 siblings, 1 reply; 2+ messages in thread
From: John Scott @ 2021-01-20 20:49 UTC (permalink / raw)
To: gcc-help
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Hi,
I'm interested in building the cross toolchain needed to build carl9170
wireless firmware. The docs say that it needs an SH-2 toolchain, but the build
scripts only use the 'sh-elf' tuple. (I've asked about this on the linux-
wireless list but haven't garnered a response.)
It seems like config.sub is equally happy to accept sh-elf and sh[1234]-elf, so
I wonder if the first is an alias and to what, or how Binutils+GCC interprets
the difference.
Thanks,
John
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Target triplet: sh-elf vs sh1-elf vs sh2-elf
2021-01-20 20:49 Target triplet: sh-elf vs sh1-elf vs sh2-elf John Scott
@ 2021-01-21 0:42 ` Segher Boessenkool
0 siblings, 0 replies; 2+ messages in thread
From: Segher Boessenkool @ 2021-01-21 0:42 UTC (permalink / raw)
To: John Scott; +Cc: gcc-help
On Wed, Jan 20, 2021 at 03:49:28PM -0500, John Scott via Gcc-help wrote:
> Hi,
>
> I'm interested in building the cross toolchain needed to build carl9170
> wireless firmware. The docs say that it needs an SH-2 toolchain, but the build
> scripts only use the 'sh-elf' tuple. (I've asked about this on the linux-
> wireless list but haven't garnered a response.)
>
> It seems like config.sub is equally happy to accept sh-elf and sh[1234]-elf, so
> I wonder if the first is an alias and to what, or how Binutils+GCC interprets
> the difference.
sh2-elf defaults to -m2, while sh-elf defaults to -m1. This is only a
default, with either toolchain you can generate code for both targets.
(It could be that some other things or defaulted differently by the
target files, or even disabled,or hardcoded -- I only looked in
config.gcc).
Segher
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