Hi, Building C++ code that does
#include <filesystem> I get either a file-not-found error or a bunch of errors that the functions are 10.15+ only. What's with that? If the implementation is provided by libc++, isn't this something that could be patched? Shouldn't require any external dependencies on systems that already underwent the libc++ conversion. On more recent systems that have a stock libc++ one can install `port:libcxx` with the binaries under $prefix . I have been doing that for years so all MacPorts executables use it, and that has never caused any ABI issues with system libraries that were built against the stock libc++ version. In fact, I often use my own build for other applications as well, assuming they'll benefit from newer=better and the maximum optimisation I used in the build. R.
