Several years ago I configured and built a number of kernels, tools, and LinuxCNC (nee EMC1&2) on Gentoo. I'd be tempted to support a LinuxCNC/RT-PREMPT ebuild. I'm not an official Gentoo dev, but I do have sunrise overlay rights.
On Dec 2 2013 1:39 PM, Michael Haberler wrote: > Am 01.12.2013 um 22:31 schrieb Brian Morel <[email protected]>: > >> I've been lurking for quite a while, and I'm trying to get up to >> speed with >> the system to help out. I'm currently setting up a dev. environment >> to >> test/learn the software. My plan is to build and test the three >> main RT >> Kernels with the Unified Build branch. My question is: has it been >> determined what base system is planed on being used for 2.6. I've >> seen >> Ubuntu Precise mentioned on the list and on the TODO page. Is there >> a >> specific version of Precise that would be used? I am currently >> installing >> Xubuntu on my dev. system since the default Unity install was very >> slow. >> Also, is there a specific kernel version that is going to be >> utilized? I >> know Precise shipped with either 3.2 or 3.4, but the latest point >> release >> is including a 3.8 series kernel. I think that would match up >> better with >> the BBB kernel that is being used with Machine Kit. It seems that >> RTAI , >> Xenomai and RT_Prempet all theoretically support 3.8, and my plan >> was to >> test this. > > As for the PC version of master as currently coming out of the > buildbot: as Seb says - Ubuntu > > Note as of yet the Unified Build branch has not been merged, meaning > if you want to work with this code base right now, currently you need > to work from github.com/mhaberler/linuxcnc, which is a jour with > master as of today > > This particular branch is routinely built on a wider range of > platforms - RHEL, Fedora, Debian, and the Armv7 Debian build for the > Beaglebone. > > In terms of RT kernels, RT-PREEMPT is the easiest to work with over a > wide range of platforms. I run all sorts of rt-preempt kernels from > stock Debian 3.0.something-rt to hand-built 3.12-rt on the same > wheezy > and jessie machines and it makes no difference for my mill. > > The current PC Xenomai kernel is at 3.5.7 and works fine on the > Debian and Ubuntu machines I use. I've tried the 3.8.13 Xenomai > kernel > on PC's, no observable difference. > > Overall I'd say the question of a 'match' of kernel versions isnt > that terribly important any more as it used to - the times when we > were locked into an old kernel and held up with upgrading the > userland > environment are over, and the feature sets used from the RT kernels > are so small the version numbers dont really matter. I did observe > significant improvments in latency with the new RT-PREEMPT kernels, > so > it's worth considering a recent strain here. I wouldnt be able to > tell > a significant performance difference for the RTAI and Xenomai kernels > over a range of versions. > > -- > > I do remember that there was some consensus in Wichita to move > towards Debian as primary goal longer term, because Debian has the > highest 'infection rate' of all distros and the Unified Build branch > could run off a stock Debian-provided RT-PREEMPT kernel, i.e. without > other non-Debian provided packages. This means the need for a > 'LiveCD' > type aid as a primary means of distribution will largely go away. At > least I continue to work on this assumption. We still need a Debian > developer to sponsor and shepherd the Debian inclusion process, > though. But the UB code base should be ready for that step. > > > - Michael > > > >> >> Thanks, >> >> Brian Morel >> >> ------------------------------------------------------------------------------ >> Rapidly troubleshoot problems before they affect your business. 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