Re: [PATCH] rust: fix bindgen build error with fstrict-flex-arrays

[Gary Guo]

On Tue, 15 Aug 2023 08:53:46 +0200
Andrea Righi <andrea.righi@xxxxxxxxxxxxx> wrote:

> Commit df8fc4e934c1 ("kbuild: Enable -fstrict-flex-arrays=3") enabled
> '-fstrict-flex-arrays=3' globally, but bindgen does not recognized this
> compiler option, triggering the following build error:
> 
>  error: unknown argument: '-fstrict-flex-arrays=3', err: true
> 
> Add '-fstrict-flex-arrays' to the list of cflags that should be ignored
> by bindgen.
> 
> Fixes: df8fc4e934c1 ("kbuild: Enable -fstrict-flex-arrays=3")
> Signed-off-by: Andrea Righi <andrea.righi@xxxxxxxxxxxxx>

Tested-by: Gary Guo <gary@xxxxxxxxxxx>

> ---
>  rust/Makefile | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/rust/Makefile b/rust/Makefile
> index 4124bfa01798..ae2f5421da25 100644
> --- a/rust/Makefile
> +++ b/rust/Makefile
> @@ -258,6 +258,7 @@ bindgen_skip_c_flags := -mno-fp-ret-in-387 -mpreferred-stack-boundary=% \
>  	-fno-reorder-blocks -fno-allow-store-data-races -fasan-shadow-offset=% \
>  	-fzero-call-used-regs=% -fno-stack-clash-protection \
>  	-fno-inline-functions-called-once -fsanitize=bounds-strict \
> +	-fstrict-flex-arrays=% \
>  	--param=% --param asan-%
>  
>  # Derived from `scripts/Makefile.clang`.