[PATCH v3 19/19] configure: Allow clang 18 or above

[Collin Funk]

Adhemerval Zanella <adhemerval.zanella@linaro.org> writes:

> The clang support is still experimental and not all testcase build
> or run correctly.  Only clang 18 and onwards is supported and only
> for x86_64-linux-gnu and aarch64-linux-gnu.
> ---
>  NEWS         | 5 +++++
>  configure    | 2 +-
>  configure.ac | 2 +-
>  3 files changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/NEWS b/NEWS
> index 4b1f259fde6..895292855ea 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -13,6 +13,11 @@ Major new features:
>  
>  * The ISO C23 memalignment function has been added.
>  
> +* Initial support for building with clang has been added.  It requires
> +  at least clang version 18, aarch64-linux-gnu or x86_64-linux-gnu
> +  targets, and libgcc compatible runtime (including libgcc_s.so for
> +  pthread cancellation and backtrace runtime support).
> +

The configure checks look good. The wording of the NEWS entry looks
good. I think that "Initial support" implies that the clang support is
experimental, but perhaps we should be more explicit? WDYT?

That should be a minor wording change though, so regardless

Reviewed-by: Collin Funk <collin.funk1@gmail.com>

Collin