[PATCH v3 1/4] config/riscv: detect V extension

[Thomas Monjalon]

19/09/2025 18:33, uk7b at foxmail.com:
> From: Sun Yuechi <sunyuechi at iscas.ac.cn>
> 
> This patch is derived from "config/riscv: detect presence of Zbc
> extension with modifications".
> 
> The RISC-V C api defines architecture extension test macros
> These let us detect whether the V extension is supported on the
> compiler and -march we're building with. The C api also defines V
> intrinsics we can use rather than inline assembly on newer versions of
> GCC (14.1.0+) and Clang (18.1.0+).
> 
> If the V extension and intrinsics are both present and we can detect
> the V extension at runtime, we define a flag, RTE_RISCV_FEATURE_V.
> 
> Signed-off-by: Sun Yuechi <sunyuechi at iscas.ac.cn>

Series merged with style improvements, thanks.

Please could you add a cross file in config/riscv/ for rv64gcv
and use it in devtools/test-meson-builds.sh so we can test compiling
with the vector extension?

Another question about RISC-V maintenance in general,
what do you think about other pending patches for RISC-V?