building rdma-core from travis

building rdma-core from travis

[Hefty, Sean]

I'm trying to build the wonderful new build system that has infested rdma-core from another travis project.  I hit this error attempting to run build.sh from a travis.yml script.


CMake Error at CMakeLists.txt:23 (cmake_minimum_required):

  CMake 2.8.11 or higher is required.  You are running version 2.8.7


I can see that travis runs successfully against rdma-core.  Was there a magic setting used to work-around the travis version?
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RE: building rdma-core from travis

[Hefty, Sean]

> CMake Error at CMakeLists.txt:23 (cmake_minimum_required):
> 
>   CMake 2.8.11 or higher is required.  You are running version 2.8.7
> 
> 
> I can see that travis runs successfully against rdma-core.  Was there a
> magic setting used to work-around the travis version?

It looks like rdma-core requires the 'trusty' build on travis...
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Re: building rdma-core from travis

[Leon Romanovsky]

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On Tue, Oct 18, 2016 at 12:06:19AM +0000, Hefty, Sean wrote:
> > CMake Error at CMakeLists.txt:23 (cmake_minimum_required):
> >
> >   CMake 2.8.11 or higher is required.  You are running version 2.8.7
> >
> >
> > I can see that travis runs successfully against rdma-core.  Was there a
> > magic setting used to work-around the travis version?
>
> It looks like rdma-core requires the 'trusty' build on travis...

Yes, you are right.
"# We need at least cmake 2.12, this means we need to use trusty."
http://marc.info/?l=linux-rdma&m=147587977913428&w=2

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Re: building rdma-core from travis

[Jason Gunthorpe]

On Tue, Oct 18, 2016 at 08:08:34AM +0300, Leon Romanovsky wrote:
> > > I can see that travis runs successfully against rdma-core.  Was there a
> > > magic setting used to work-around the travis version?
> >
> > It looks like rdma-core requires the 'trusty' build on travis...
> 
> Yes, you are right.
> "# We need at least cmake 2.12, this means we need to use trusty."
> http://marc.info/?l=linux-rdma&m=147587977913428&w=2

Right. rdma-core does not support precise, at all. Aside from cmake,
the original source packages had some non-functional 'compat' for such
an old glibc (from 2012!) that I stripped out as well.

I can't recommend that anybody working on a c-language project should
be using the precise images on travis for anything <shrug>

Jason
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RE: building rdma-core from travis

[Hefty, Sean]

> Right. rdma-core does not support precise, at all. Aside from cmake,
> the original source packages had some non-functional 'compat' for such
> an old glibc (from 2012!) that I stripped out as well.

To people who use vi to write C code with text-based email for their code review process, 2012 is spaceship futuristic.

> I can't recommend that anybody working on a c-language project should
> be using the precise images on travis for anything <shrug>

We use containers, which are supposed to be faster for processing.
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Re: building rdma-core from travis

[Jason Gunthorpe]

On Tue, Oct 18, 2016 at 04:31:23PM +0000, Hefty, Sean wrote:
> > Right. rdma-core does not support precise, at all. Aside from cmake,
> > the original source packages had some non-functional 'compat' for such
> > an old glibc (from 2012!) that I stripped out as well.
> 
> To people who use vi to write C code with text-based email for their
> code review process, 2012 is spaceship futuristic.

Well, those people will suffer then *shrug*

> > I can't recommend that anybody working on a c-language project should
> > be using the precise images on travis for anything <shrug>
> 
> We use containers, which are supposed to be faster for processing.

I seem to recall the GCE images have faster CPUs but spend more time
booting the VM.

For rdma-core I counter balanced the VM spin up time by avoiding the
matrix feature. rdma-core has a very fast compile at 19s, I can run
all four compiler passes in less time than it takes to spin up and
configure the VM, container or not :\.

For something like libfabric you might get a win if you do the same
and run fabtests on one of the compiler's output instead of for both.

Plus, if you use trusty you don't need to download and compile
rdma-core, just install libibverbs-dev and librdmacm-dev from Ubuntu.

But at the end of the day, it depend what you expect out of
travis. rdma-core has travis setup to try and show that the code is
clean with bleeding edge rolling release distros (eg forward
looking).

Jason
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