[PATCH] bsps/arm: fix nested extern decl. warnings brought by CMSIS files update

[Sebastian Huber]

On 21.07.23 17:37, Karel Gardas wrote:
> ---
>   bsps/arm/include/cmsis_gcc.h | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/bsps/arm/include/cmsis_gcc.h b/bsps/arm/include/cmsis_gcc.h
> index 4f0762d6dc..9e867348d2 100644
> --- a/bsps/arm/include/cmsis_gcc.h
> +++ b/bsps/arm/include/cmsis_gcc.h
> @@ -30,7 +30,9 @@
>   #pragma GCC diagnostic ignored "-Wsign-conversion"
>   #pragma GCC diagnostic ignored "-Wconversion"
>   #pragma GCC diagnostic ignored "-Wunused-parameter"
> -
> +#ifdef __rtems__
> +#pragma GCC diagnostic ignored "-Wnested-externs"
> +#endif /* __rtems__ */
>   /* Fallback for __has_builtin */
>   #ifndef __has_builtin
>     #define __has_builtin(x) (0)

I would disable this warning only in __cmsis_start() with a push/pop pragma.

I think you have to add also a

  * Modifications Copyright (C) Karel Gardas

if you change the file, see also:

https://softwareengineering.stackexchange.com/questions/220068/file-with-apache-2-0-and-my-modifications

In general, some advice for dealing with Apache 2.0 files in the RTEMS 
Software Engineering manual would be nice.

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