Using <filesystem> on macOS 10.13 with clang++-mp-13

[Ryan Schmidt]

On Jul 3, 2022, at 13:38, Ken Cunningham wrote:

> You can (sometimes) use macports-libcxx to get past this. This however introduces two versions of libc++.dylib into the softare mixture, and this sometimes causes errors due to incompatibilities between libc++ versions (ODR errors). If you are taking this route, linking in the newer libc++.a statically has a higher chance of working properly (that is what Chrome does on older MacOS systems).

If a port X links to a static library provided by a port Y, you should increase the revision of port X whenever port Y is updated to a new version so that your port X receives the new version of the static library. A comment should be left in port Y advising whoever updates it to do that.