CalculiX is using libstdc++ (this installation is configured to use libc++)

[Chris Jones]

Please post a complete, clean, build log for the port in question.

In general GCC should not be used to build c++ (*) as doing so leads to 
these c++ runtime mis-matches. You should use clang for c++ (and c as 
well, although there is no runtime issues there).

cheers Chris

* The latest GCC versions now actually support building against libc++, 
the clang runtime, which would make this possible in theory. It needs 
support in base though 
(https://github.com/macports/macports-base/pull/275) so cannot be used 
until that is available.

On 27/07/2022 1:15 am, Mark Brethen wrote:
> Installing CalculiX with a clang variant is successful, however when 
> selecting a gcc variant:
> 
> --->  Scanning binaries for linking errors
> --->  No broken files found.
> CalculiX is using libstdc++ (this installation is configured to use libc++)
> --->  Found 1 broken port, determining rebuild order
> You can always run 'port rev-upgrade' again to fix errors.
> The following ports will be rebuilt: CalculiX @2.18+docs+examples+gcc12
> Continue? [Y/n]:
> 
> Choosing ‘Y’ puts it into and endless re-install. Adding 
> 'configure.cxx_stdlib macports-libstdc++’ seems to fix things.
> 
> 1. What is causing this?
> 2. Should the compilers group be removed and stick with clang?
> 3. What changes to the portfile would need to made to permit either 
> compiler variant?
> 
> 
> 
> Thanks,
> Mark
> 
>