can I compile stdc++ library alone using existing aarch64 toolchain?

[xian li via Gcc-help <gcc-help@xxxxxxxxxxx>]

Hi,

On my computer, there is already existing aarch64-linux-gnu toolchain,
but we have to modify codes in stdc++ lib in gcc (5.4),
we just want to compile the stdc++ library alone, is it possible to
accomplish this work?

It will be very appreciated if someone can help me with this, thank you

Thanks&BestRegards
Samuel