emscripten : Emscripten is a complete compiler toolchain to WebAssembly, using LLVM ( https://emscripten.org )
hip : C++ Heterogeneous-Compute Interface for Portability ( https://github.com/ROCm-Developer-Tools/hipamd )
lemon : A LALR(1) parser generator ( https://www.hwaci.com/sw/lemon/ )
nvidia-cuda-sdk : NVIDIA CUDA Software Development Kit ( https://developer.nvidia.com/cuda-zone )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a cg
For Paludis use this rsync : rsync://gentoo.zugaina.org/cg-portage
If you have a problem : ycarus(-at-)zugaina.org