<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"><meta http-equiv="content-type" content="text/html; charset=utf-8"><div dir="ltr"></div><div dir="ltr">On Mar 26, 2025, at 11:29, joerg van den hoff wrote:</div><div dir="ltr"><blockquote type="cite"><br></blockquote></div><blockquote type="cite"><div dir="ltr"><span>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.</span><br><span></span><br><span>the graphiz package (which is a dependency of the `feh' image viewer which is the actual package I do need) refuses to install:</span><br><span></span><br><span>:info:configure checking whether /usr/bin/clang++ supports C++17 features with -std=c++17... no</span><br><span>:info:configure checking whether /usr/bin/clang++ supports C++17 features with +std=c++17... no</span><br><span>:info:configure checking whether /usr/bin/clang++ supports C++17 features with -h std=c++17... no</span><br><span>:info:configure checking whether /usr/bin/clang++ supports C++17 features with -std=c++1z... no</span><br><span>:info:configure checking whether /usr/bin/clang++ supports C++17 features with +std=c++1z... no</span><br><span>:info:configure checking whether /usr/bin/clang++ supports C++17 features with -h std=c++1z... no</span><br><span>:info:configure configure: error: *** A compiler with support for C++17 language features is required.</span><br><span></span><br><span>I do see this with</span><br><span></span><br><span>clang --version</span><br><span>Apple clang version 16.0.0 (clang-1600.0.26.6)</span><br><span></span><br><span>and I believe this is as it should be with OSX 15.3?</span><br><span></span><br><span>my question: can this be fixed on my side or is this a principal issue currently?</span><br></div></blockquote><br><div>Please try <a href="https://trac.macports.org/wiki/ProblemHotlist#clts16">https://trac.macports.org/wiki/ProblemHotlist#clts16</a></div></div></body></html>