Latest source http://ck.kolivas.org/apps/cgminer/ Git tree: https://github.com/ckolivas/cgminer Compiles fine.
It compiles, but not so well :-) It is probably necessary to split some current ebuilds. Cgminer is to be compiled with OpenCL which is provided curently by nvidia-drivers (and possibly other nvidia-cuda like ebuilds) but can also be provided by AMD SDK. It means maintainer has to keep up with VIDEO_CARDS option. What I currently hit is that its hard to keep both Nvidia and Radeon OpenCL libraries and possibly have two different cgminers for both cards. Anyway, I'm still trying to get it right, as on Radeon cards it doesn't work for me.
Its not official / tested but may help: https://gitorious.org/bitcoin/gentoo
nvidia SDK is probably the last thing you need to worry because Nvidia card's are extremely slow and rarely used for BTC mining. You want ATI / AMD Accelerated Parallel Processing (APP) SDK (formerly ATI Stream). For more, please see: http://developer.amd.com/sdks/AMDAPPSDK/Pages/default.aspx
Keywords+=InOverlay The bitcoin overlay is missing following ebuilds, which their cgminer ebuild optionally allows to use: virtual/opencl-sdk app-admin/eselect-opencl dev-util/ati-stream-sdk dev-util/ati-stream-sdk-bin dev-util/amdstream dev-util/amd-app-sdk dev-util/amd-app-sdk-bin dev-util/intel-opencl-sdk The only ebuild that actually exists is nvidia-cuda-toolkit, which is probably of no use with my AMD card. In addition I would assume that virtual/opencl-sdk shall wrap the other sdk packages, so the list might be reduced to that one alone.
Its already in the tree.