gexiv2 @0.12.1: error: no member named 'llrint' in the global namespace; did you mean 'lrint'?

[kencu (Ken)]

after fixing #61777 we see this error.

This is a problem with the gcc math headers that shows up when building c++11 software using libstdc++.

In file included from ../gexiv2-0.12.1/gexiv2/gexiv2-metadata.cpp:22:
/opt/local/include/gcc/c++/cmath:1149:11: error: no member named 'llrint' in the global namespace; did you mean 'lrint'?
  using ::llrint;
        ~~^

Michael fixed it in legacysupport's math header overrides.

[kencu (Ken)]

Or so I thought. Adding legacysupport does not fix this after all, on 10.5 Intel with stdlib=macports-libstdc++, it is still broken. So the math fixes in legacysupport need some further attention, unfortunately.

[kencu (Ken)]

Forcing it to build on 10.5 with gcc7 works (because gcc7 has the llrint math fixes in it) even without adding legacysupport.

So this ticket really becomes about fixing legacysupport's math fixes. I thought we were done with those...

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

There is a ​pull request that attempts to fix this problem.

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

In 39844191e0d1a0c637b8af2c96058ae5c9c9c896/macports-ports (master):

clang-*: fix use of -stdlib= on older machines

Fixes #61778