[PATCH i-g-t v6 09/14] lib/igt_core: Implement conditional backtrace support using HAVE_LIBUNWIND

[Kamil Konieczny]

Hi Jeevaka,
On 2025-05-16 at 16:05:46 +0000, Jeevaka Prabu Badrappan wrote:
> Add a log message indicating "backtrace not implemented" in the
> print_backtrace function and return when HAVE_LIBUNWIND is not defined.
> 
> Signed-off-by: Jeevaka Prabu Badrappan <jeevaka.badrappan at intel.com>
> ---
>  lib/igt_core.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/lib/igt_core.c b/lib/igt_core.c
> index 1d7402cb7..097a556c9 100644
> --- a/lib/igt_core.c
> +++ b/lib/igt_core.c
> @@ -383,6 +383,9 @@ static int _igt_dynamic_tests_executed = -1;
>  
>  static void print_backtrace(void)
>  {
> +#ifndef HAVE_LIBUNWIND

I added here

#error "an error"

and this did not compile on my machine. You need to add HAVE_LIBUNWIND
into lib/meson.build
For example how to do it please grep for HAVE_VALGRIND
and make similar change.

Regards,
Kamil

> +	igt_info("backtrace not implemented\n");
> +#else
>  	unw_cursor_t cursor;
>  	unw_context_t uc;
>  	int stack_num = 0;
> @@ -440,6 +443,7 @@ static void print_backtrace(void)
>  
>  	if (dwfl)
>  		dwfl_end(dwfl);
> +#endif
>  }
>  
>  __attribute__((format(printf, 2, 3)))
> -- 
> 2.49.0
>