Re: [PATCH] gdb/compile: Use std::filesystem::remove_all in cleanup

[Lancelot SIX <Lancelot.Six@amd.com>]

>> I wonder if there is a case for conditionally enabling this.  That would
>> ensure that the work is not lost, as well as used when using gcc >=8.
> 
> Let me add even though support was added for GCC 8, the functions are
> in included in libstdc++fs.a rather than the standard
> libstdc++.so/libstdc++.a.
> It was added to libstdc++ in GCC 9. So if you add this conditionally,
> you either need to do a feature test that does a link too or have one
> that adds libstdc++fs.a if not found in the standard library.
> 
> Thanks,
> Andrew
> 
Thanks for the input.

We did discuss briefly using "-libstdc++fs" on IRC, thanks for the 
precision regarding where it is required. As gcc-7.5 seems to still be 
used to build gdb, it looks like we will stay away from std::filesystem 
for now.

Thanks,
Lancelot.