Build errors on xtensor > 0.15.4

[floatdrop]

Seems like benchmark code was not updated since xtensor 0.15.4 (this is first version with which build sucseeded): https://gist.github.com/floatdrop/37437071975bee51e02dfb9fca73608a

[fakufaku]

Hello, the benchmark code still fails to build as of today. Are there plans to fix it ?
Thanks for the work you put in xtensor!

[fschlimb]

Sadly, this doesn't seem to be maintained. CMake instructions are incomplete and even when working around it the code doesn't build. Lots of C++ errors.