Hi Steve
The main problem is probably your OS
We only support Debian and the package dependencies are based upon what
is in the Debian repos.
Ubuntu tends to just do whatever it likes and wants to 'Ubuntuise'
everything.
There is a reason why the linuxcnc distro image is also Debian based.
The czmq / zmq libraries are a particular problem because they were changed
to a new version that is backwardly incompatible with the old one by the
zmq project.
At great trouble we ported our code to the new API, to enable Machinekit
to run on later
versions of debian where it is the default.
The new libs are now backported by Debian as far back as Jessie thankfully.
The version requirements are to get the correct ones from Debian repos.
If you install Debian Jessie / Stretch (even Buster if you use my repo),
it will just work.
The docs clearly state "You should first have a working Debian installation"
http://www.machinekit.io/docs/getting-started/getting-started-platform/
Hope that clarifies
On 09/09/18 16:06, Steve Better wrote:
Hi Schooner,
Glad you are here!
I tried to install Machinekit-HAL today. My OS is Ubuntu 16.04. After
I installed libczmq-dev with apt-get, I just cannot continue
successfully with the following error:
"Requested 'libczmq > 4.0' but version of libczmq is 3.0.2"
This is not friendly to attract more people to participate in this project.
I think the Machinekit project and the LinuxCNC project need to be more
visionary. Not just in the software aspect, but also in the motion
control aspect. We need more advanced technologies these days to control
a manipulator or a mobile robot. OROCOS and ROS is still not very
successful in practice, and maybe they won't get there ever.
Well, young people are attracted by mobile internet and AI, the CNC
technology seems to be old since the EMC emerging in 1990s. We need
modern visions like OROCOS and ROS to push this project further.
On 09/09/2018 06:27 PM, schoone...@gmail.com wrote:
Hi Chris,
As my paws are all over a lot of the work you are mentioning
(multicore in collaboration with Michael Haberler some years back)
and the splitting into HAL and CNC stacks, why not contact me direct
to discuss.
I think there is scope for collaboration which could be to both our
projects
benefit, not least from a reduction in maintenance.
The multicore work you mention, primarily adds atomic operations and
other measures
to prevent things like the side effects of multi core, multi cache
operations, where values can be updated
by one cache before another has finished.
Machinekit's HAL generally has hugely diversified from the original
linuxcnc, instantiated components for instance
which can be added or removed at any time, even in a running system.
Because of backwardly compatible measures however, its use is not
visibly greatly different.
The splitting out of HAL, not only allows the stack to be used for non
CNC projects, such as ROS,
but is arranged so that installing machinekit-cnc on top of
machinekit-hal, brings you back to a fully functioning machinekit again.
We are contemplating moving to a 2 package installation and
deprecating the original machinekit repo and packages.
If you were to split out your CNC stack, which has some features we do
not have,
with the correct tweaks it could even sit on our HAL stack and result
in a fully functioning
CNC controller again.
Unfortunately we have not replaced NML with zmq, that would be the
'holy grail'.
Michael Haberler and Alex's protobuf message headers and zmq
(machinetalk) would probably be the way to go there
It is something we would be interested in discussing, I am sure.
regards
Mick
On 09/09/18 01:27, emc-developers-requ...@lists.sourceforge.net wrote:
From: Chris Morley<chrisinnana...@hotmail.com>
To: EMC DEV<emc-developers@lists.sourceforge.net>
Subject: [Emc-developers] Breakout of HAL/ machinekits's HAL
Message-ID:
<cy1pr05mb22506fd52585a3d57cfc4eefc0...@cy1pr05mb2250.namprd05.prod.outlook.com>
Content-Type: text/plain; charset="iso-8859-1"
I see that machinekit has broken out HAL and cnc (Well and lots of
others) into different repositories.
https://github.com/machinekit
[https://avatars1.githubusercontent.com/u/6759549?s=280&v=4]<https://github.com/machinekit>
machinekit ? GitHub<https://github.com/machinekit>
github.com
GitHub is where people build software. More than 28 million people
use GitHub to discover, fork, and contribute to over 85 million
projects.
It also seems they have updated HAL considerably,
They were working on RT multicore support, anytime instantiation of
HAL components
cython support.. probably other stuff - I'm not sure if it includes
ARM or FPGA upgrades.
I was thinking that maybe linuxcnc should discuss if that is
something that would be of interested.
pros I see:
-chance to break HAL out of cnc stack
-seemingly an upgrade in capability
-someone else has done a lot of work/testing already
-might allow more cross work of developers between the projects
cons:
-surely a lot of work to incorporate (though it does support legacy
code, if I understand right)
-lack of experience with concepts/code - will take time to become
comfortable
-we'd have to admit they are not bad people:)
Ok that last one was meant as fun.
There are very smart and hard working people on both projects, it
would be nice to benefit both
projects.
I have not really looked at the code, nor am qualified to give
indepth opinion of the code.
I have watched the video of the multicore idea.
https://www.youtube.com/watch?v=brT0bEkJLSY
There are more videos (including one about the trajectory planner
that we now use)
Thoughts?
Chris M
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