Multiple Ruby versions for testing

12-12-08, 02:36 PM

James Coglan

[Note: parts of this message were removed to make it a legal post.]

Hi list,

I'm trying to test a gem (managed with Hoe) on my Ubuntu machine. The Ruby
from the Ubuntu repos is 1.8.7, but the last version I tested this gem on
was 1.8.6, where all the tests pass. Now some of the tests are failing so I
need to test across multiple versions at once. Can someone point me to a
decent walk-through on install and running tests against several versions of
Ruby?

12-12-08, 02:51 PM

Craig Demyanovich

[Note: parts of this message were removed to make it a legal post.]

Dr. Nic wrote something about this recently.

http://drnicwilliams.com/2008/12/11/...our-ruby-code/

Regards,
Craig

12-12-08, 07:14 PM

James Coglan

[Note: parts of this message were removed to make it a legal post.]

2008/12/12 Craig Demyanovich <cdemyanovich>

> Dr. Nic wrote something about this recently.
>
> [..]
>
> Regards,
> Craig
>

Thanks for that. On first running the "multiruby -e 'p 1+1'" command, it
downloads 1.8.7 and 1.9.0 then starts building them, but hangs when it gets
to "creating Makefile". Anybody else get this and know how to fix it? I have
build-essential and ruby1.8-dev installed and the build doesn't report
errors, it just hangs.

12-13-08, 07:26 PM

Ryan Davis

On Dec 12, 2008, at 11:14 , James Coglan wrote:

> 2008/12/12 Craig Demyanovich <cdemyanovich>
>
>> Dr. Nic wrote something about this recently.
>>
>> [..]
>
> Thanks for that. On first running the "multiruby -e 'p 1+1'"
> command, it
> downloads 1.8.7 and 1.9.0 then starts building them, but hangs when
> it gets
> to "creating Makefile". Anybody else get this and know how to fix
> it? I have
> build-essential and ruby1.8-dev installed and the build doesn't report
> errors, it just hangs.

ruby 1.9.0 has a makefile bug that prevents parallel builds from
working correctly. You can either install one of the latest 1.9
releases [1], go from trunk, or cd into the build dir and type `make`
to bypass the bug.

[1] http://drnicwilliams.com/2008/12/11/...our-ruby-code/

12-14-08, 03:32 AM

Marc Heiler

> Can someone point me to a decent walk-through on install
> and running tests against several versions of Ruby?

I wouldn't recommending "my" way of doing it but I compile Ruby
into versioned directories (from source), i.e. under
/Programs/Ruby/1.9.0 for instance. A symlink will point to the version
to use, to switch versions one just adjusts the symlink (and
"resymlinks" in case one follows something akin to
http://www.gobolinux.org/ )

However, I think pretty all Linux distributions do not enjoy this idea
and instead scatter files into /usr prefix (when it comes from the
"package manager" of the distribution in question), or /usr/local (if a
user compiled on his own, though many people use $HOME prefix, and some
even use /opt which I find extremely peculiar since I saw some
distributions using pseudo-versioned dirs inside /opt i.e. "/opt/kde3"
...)

Similar Threads
Thread	Thread Starter
Testing for different versions of Office I have the following macro that opens an access database. I have some people that are using Access 2000. Is there any way I can test to see what version they are using and...	oldjay
Buiulding multiple versions of Ruby This is the way that I build ruby from the latest svn sources. This allows me to have multiple versions and to compare the performance/behaviour of my builds against the...	john maclean
Running Multiple Versions of Ruby on Debian? Well so far things are going kind of good, I've built my own server and it's sitting in colo running Debian Etch and Ruby 1.8.6 (built from source) Now me being me I...	John Griffiths
A service for testing Python code on multiple platforms and versions Hopefully a service like this already exists and I just haven't found it yet. If not it could be an idea for some kind soul(s) to pick up and run with ;-) As someone who...	David Moss
Multiple Versions of Ruby on same machine I'd like to include a complete version of Ruby, including all the necessary libs, in the source tree for our internal app. That will allow our unit tests/QA procedure/app...	S. Robert James