graphviz @2.40.1_3+pangocairo+x11: error: no member named 'copy_n' in namespace 'std::__1'

[jboydon (John Boydon)]

I can't build graphviz 2.40.1_3 on BigSur 11.1. First error is the following (full report attached).

In file included from /opt/local/libexec/llvm-11/bin/../include/c++/v1/string_view:175:
/opt/local/libexec/llvm-11/bin/../include/c++/v1/__string:337:12: error: no member named 'copy_n' in namespace 'std::__1'; did you mean 
'copy'?
    _VSTD::copy_n(__s2, __n, __s1);
    ~~~~~~~^
/opt/local/libexec/llvm-11/bin/../include/c++/v1/iterator:1374:93: note: 'copy' declared here
template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 copy(_Ip, _Ip, _Op);
                                                                                            ^
/opt/local/libexec/llvm-11/bin/../include/c++/v1/__bit_reference:424:43: error: no member named 'min' in namespace 'std::__1'

Reinstallation of CLT and/or Xcode doesn't solve the problem.

[jboydon (John Boydon)]

Graphviz installation log.

[ryandesign (Ryan Carsten Schmidt)]

Please sudo port clean graphviz and then try again, and if it fails again, attach the full main.log, compressed if it is large. (The log you attached does not show us what happened during the configure phase and I am hoping that that output will help us understand why your build is using MacPorts clang 11 when it seems like it should be using Xcode clang.)

[jboydon (John Boydon)]

After cleaning, graphviz successfully install in bigsur. Probably the CLT reinstallation solved the problem.