Re: [PATCH 6/6] newlib: introduce HAVE_HW_UNALIGNED_ACCESS option

Clang has also adopted this: https://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-20240610/587759.html

I would suggest to work out a solution that works for older and newer versions of compilers.

IMHO, for older versions, this macro could be simply defined with -D.

________________________________
From: Alexey Lapshin <[email protected]>
Sent: Monday, January 27, 2025 12:27:56 PM
To: [email protected] <[email protected]>; Christian Herber (OSS) <[email protected]>
Cc: Alexey Gerenkov <[email protected]>; Ivan Grokhotkov <[email protected]>
Subject: Re: [PATCH 6/6] newlib: introduce HAVE_HW_UNALIGNED_ACCESS option

Thanks for highlighting that! But unfortunately this was added too recently in GCC (14.1.0).
Moving to approach with __riscv_misaligned_fast will not work for older GCC.
Also, I'm not sure if this will be applicable to other compilers as well

https://github.com/gcc-mirror/gcc/commit/6e23440b5df4011bbe1dbee74d47641125dd7d16


On Mon, 2025-01-27 at 10:58 +0000, Christian Herber (OSS) wrote:
> Shouldn't this be controlled by __riscv_misaligned_fast according to https://github.com/riscv-non-isa/riscv-c-api-doc/blob/main/src/c-api.adoc#preprocessor-definitions
>
>