[saagarjha]

I think Xcode has shipped with a compliant C++17 compiler for over a year, but I used GCC to compile this one :)

[fhars]

GCC has supported this for more than a year, too (at least since 7.4.0).

[saagarjha]

GCC 7.4.0 sadly misses certain C++ features (filesystems) and does not correctly support others (template argument deduction). I'm waiting for 20.04 to hopefully bump GCC to something newer…