Re: [PATCH v4 2/3] accel/tcg: Add debuginfo support

[Thomas Huth <thuth@redhat.com>]

On 12/01/2023 16.20, Ilya Leoshkevich wrote:
> Add libdw-based functions for loading and querying debuginfo. Load
> debuginfo from the system and the linux-user loaders.
> 
> This is useful for the upcoming perf support, which can then put
> human-readable guest symbols instead of raw guest PCs into perfmap and
> jitdump files.
> 
> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
> ---
...
> diff --git a/meson.build b/meson.build
> index 175517eafde..cab8c67d961 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -1648,6 +1648,12 @@ if libbpf.found() and not cc.links('''
>     endif
>   endif
>   
> +# libdw
> +libdw = dependency('libdw',
> +                   method: 'pkg-config',
> +                   kwargs: static_kwargs,
> +                   required: false)
> +

  Hi,

I recently did a build with "configure --without-default-features" and I 
noticed that this new libdw does not get disabled automatically there, which 
looks kind of weird. Is there a reason that there is no config knob here to 
disable it like we have it with all the other optional libraries that we 
support?

  Thomas