Is it alright if I just copy ccmath folder (from the include/ folder) and put your LICENSE file there?
Oh also these are the lowest testedt compilers ccmath supports. GCC 11.1+ Clang 9.0.0+ AppleClang 14.0.3+ (Lowest tested version) MSVC 19.26+ Intel DPC++ 2022.0.0+ Nvidia HPC SDK 22.7+ (Lowest tested version)