undefined reference to `fiber_switchContext'

[Iain Buclaw]

On Monday, 23 August 2021 at 19:07:52 UTC, Mahdi wrote:
> /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/libgphobos.so: 
> undefined reference to `fiber_switchContext'
> collect2: error: ld returned 1 exit status
>
> I have this problem after installing GDC 11.
> I installed gcc,g++ and gdc version 11 from unofficial 
> repositories on Ubuntu 20.04.

Try an official repository, or get in touch with the package 
maintainers to make them aware of the broken package.