With libc++ 21 science/py-tensorflow fails to build, with errors similar
to:
/wrkdirs/usr/ports/accessibility/hyprsunset/work/hyprsunset-0.3.3/src/Hyprsunset.cpp:300:10: error: no member named 'sort' in namespace 'std'
300 | std::sort(profiles.begin(), profiles.end(), [](const auto& a, const auto& b) {
| ^~~~
and:
/wrkdirs/usr/ports/accessibility/hyprsunset/work/hyprsunset-0.3.3/src/Hyprsunset.cpp:329:29: error: no member named 'zoned_time' in namespace 'std::chrono'
329 | auto now = std::chrono::zoned_time(std::chrono::current_zone(), std::chrono::system_clock::now()).get_local_time();
| ^~~~~~~~~~
The former is because the header <algorithm> isn't included.
The latter is because libc++ in FreeBSD doesn't have
std::chrono::zoned_time support yet, but the program checks for the
libc++ specific macro _LIBCPP_HAS_NO_TIME_ZONE_DATABASE. In libc++ 21,
most of the "_LIBCPP_HAS_NO_xxx" macros have been replaced by 'positive'
variants. In this case _LIBCPP_HAS_TIME_ZONE_DATABASE is now applicable.
PR: 293811
Approved by: tagattie (maintainer)
MFH: 2026Q1
Dimitry Andric
ac11f2876d