[PATCH 6/9] unwind: allow to specify unwinder back-end with -k option

[Dmitry V. Levin]

On Wed, Mar 14, 2018 at 02:28:11AM +0900, Masatake YAMATO wrote:
> With this commit, -k option can take an optional argument
> specifying unwinder like:
> 
>   $ strace -klibunwind ...
> 
> Here, "libunwind" is the name of unwinder. Currently only libunwind
> is available as unwinder. Using libdw as unwinder is planed.
> 
> If no unwinder is given, strace choose one of available unwinders
> linked in the build time.

Given that libdw already performs better than libunwind as unwinder, why
would one want to build a strace executable that supports both unwinders
simultaneously?


-- 
ldv
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