Hi folks, https://github.com/numpy/numpy/pull/19713 showcases what *could* be a first step toward getting rid of generated C code within numpy, in favor of some C++ code, coupled with a single macro trick. Basically, templated code is an easy and robust way to replace generated code (the C++ compiler becomes the code generator when instantiating code), and a single X-macro takes care of the glue with the C world. Some changes in distutils were needed to cope with C++-specific flags, and extensions that consist in mixed C and C++ code. I've kept the change as minimal as possible to ease the (potential) transition and keep the C++ code close to the C code. This led to less idiomatic C++ code, but I value a "correct first" approach. There's an on-going effort by seiko2plus to remove that C layer, I acknowledge this would bring even more C++ code, but that looks orthogonal to me (and a very good second step!) All lights are green for the PR, let's assume it's a solid ground for discussion :-) So, well, what do you think? Should we go forward? Potential follow-ups : - do we want to use -nostdlib, to be sure we don't bring any C++ runtime dep? - what about -fno-exception, -fno-rtti? - coding style? - (I'm-not-a-farseer-I-don-t-know-all-topics)