cannot update `graphiz' after OSX update to 15.3

[Chris Jones]

Hi,

Its difficult to say as you haven't provided enough information really 
to help much. My guess would be you still perhaps have an issue with 
your CLT installation, but that is just a guess. see

https://trac.macports.org/wiki/ProblemHotlist#clts16

If you still have issues after following the instructions there please 
open a trac ticket with more complete information so someone can help 
you further.

Just to note, graphviz (which I presume i what you really mean) builds 
perfectly fine on macOS15

https://ports.macports.org/port/graphviz/details/

so there is no general issue but some issue local to your setup.

Chris

On 26/03/2025 4:29 pm, joerg van den hoff wrote:
> I did a major OSX update (from 12.x to 15.3 ...) and have run into this 
> problem after having update the Xcode command line tools and issuing 
> port migrate.
> 
> the graphiz package (which is a dependency of the `feh' image viewer 
> which is the actual package I do need) refuses to install:
> 
> :info:configure checking whether /usr/bin/clang++ supports C++17 
> features with -std=c++17... no
> :info:configure checking whether /usr/bin/clang++ supports C++17 
> features with +std=c++17... no
> :info:configure checking whether /usr/bin/clang++ supports C++17 
> features with -h std=c++17... no
> :info:configure checking whether /usr/bin/clang++ supports C++17 
> features with -std=c++1z... no
> :info:configure checking whether /usr/bin/clang++ supports C++17 
> features with +std=c++1z... no
> :info:configure checking whether /usr/bin/clang++ supports C++17 
> features with -h std=c++1z... no
> :info:configure configure: error: *** A compiler with support for C++17 
> language features is required.
> 
> I do see this with
> 
> clang --version
> Apple clang version 16.0.0 (clang-1600.0.26.6)
> 
> and I believe this is as it should be with OSX 15.3?
> 
> my question: can this be fixed on my side or is this a principal issue 
> currently?
> 
> 
> thank you
> joerg