cannot update `graphviz' after OSX update to 15.3

[joerg van den hoff]

thanks a lot to both of you. this (https://trac.macports.org/wiki/ProblemHotlist#clts16) was indeed 
it. very much appreciated! also thanks a lot for constantly improving macports which has come a long 
way over the last 10-20(?) years :). `port migrate', e.g., nowadays makes life a lot easier and 
seemed to have worked mostly flawlessly today for me.

best,

joerg

ps: could/should not https://trac.macports.org/wiki/ProblemHotlist#clts16 be somehow integrated into 
the `port migrate' actions? it seems it is a general pitfall currently, no?.

On 26.03.25 17:35, Ryan Carsten Schmidt wrote:
> On Mar 26, 2025, at 11:29, 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?
> 
> Please try https://trac.macports.org/wiki/ProblemHotlist#clts16