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comp.lang.ruby

ruby-opengl on Mac OS X

Robert Poor

9/20/2007 4:32:00 AM

All: Pardon this noobish question. I'm trying to bring up ruby-opengl
on my Mac OS X (v 10.4.10).

I ran "sudo gem install ruby-opengl" without any trouble -- gem
announced that it was loading ruby-opengl 0.40.1 as well as mkrf-0.2.2
-- so far so good! I poked around and found that it had installed the
following file (among others):

/usr/local/lib/ruby/gems/1.8/gems/ruby-opengl-0.40.1/lib/opengl.rb

This looks hopeful. In irb, I typed:

irb(main):106:0> require 'opengl'

which resulted in:

LoadError: no such file to load -- opengl
from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require'
from
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
from (irb):106
from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:399

My question: My guess is this is a problem with paths. What is the
cleanest remedy? Do I extend my path, make symbolic links, or move the
opengl files?

Thanks.

- ff
--
Posted via http://www.ruby-....
6 Answers

Gregory Seidman

9/20/2007 1:38:00 PM

0

On Thu, Sep 20, 2007 at 01:31:38PM +0900, Robert Poor wrote:
> All: Pardon this noobish question. I'm trying to bring up ruby-opengl
> on my Mac OS X (v 10.4.10).
>
> I ran "sudo gem install ruby-opengl" without any trouble -- gem
> announced that it was loading ruby-opengl 0.40.1 as well as mkrf-0.2.2
> -- so far so good! I poked around and found that it had installed the
> following file (among others):
>
> /usr/local/lib/ruby/gems/1.8/gems/ruby-opengl-0.40.1/lib/opengl.rb
>
> This looks hopeful. In irb, I typed:
>
> irb(main):106:0> require 'opengl'
>
> which resulted in:
>
> LoadError: no such file to load -- opengl
> from
> /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
> `gem_original_require'
> from
> /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
> `require'
> from (irb):106
> from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:399
>
> My question: My guess is this is a problem with paths. What is the
> cleanest remedy? Do I extend my path, make symbolic links, or move the
> opengl files?

I think you want to require 'gl' rather than 'opengl'. With a working
install of ruby-opengl on 10.4.10 I have the following in a working Ruby
script:

require 'rubygems'
require 'gl'
require 'glu'
require 'glut'

You don't need GLU or GLUT unless you're using them, mind you.

> Thanks.
> - ff
--Greg

Robert Poor

9/20/2007 7:11:00 PM

0

Gregory Seidman wrote:
> ...
> I think you want to require 'gl' rather than 'opengl'. With a working
> install of ruby-opengl on 10.4.10 I have the following in a working Ruby
> script:
>
> require 'rubygems'
> require 'gl'
> require 'glu'
> require 'glut'
>
> You don't need GLU or GLUT unless you're using them, mind you.
>
> --Greg

Greg:

Whoo hoo! It Just Works. Many thanks.

- Rob
--
Posted via http://www.ruby-....

Sy Yoon

10/12/2007 7:19:00 AM

0

Fearless Fool wrote:
> Gregory Seidman wrote:
>> ...
>> I think you want to require 'gl' rather than 'opengl'. With a working
>> install of ruby-opengl on 10.4.10 I have the following in a working Ruby
>> script:
>>
>> require 'rubygems'
>> require 'gl'
>> require 'glu'
>> require 'glut'
>>
>> You don't need GLU or GLUT unless you're using them, mind you.
>>
>> --Greg
>
> Greg:
>
> Whoo hoo! It Just Works. Many thanks.
>
> - Rob

Hello, Greg and Rob, Sorry for my newbie question in advance.

I am in very similar situation as Rob was in: I installed
ruby-opengl-0.40.1
in OS X(v. 10.4.10), and found 'opengl.rb' and others in

/usr/local/lib/ruby/gems/1.8/gems/ruby-opengl-0.40.1/lib/opengl.rb

But when I do irb(main):003:0> require 'gl'
I get the following error:


LoadError: Failed to lookup Init function ./gl.bundle
from ./gl.bundle
from (irb):2

(Well, 'opengl.rb' file contains line "require 'gl'" anyway, but when I
do
irb(main):003:0> require 'opengl', I receive:
LoadError: Failed to lookup Init function ./gl.bundle
from ./gl.bundle
from ./opengl.rb:16
from (irb):1:in `require'
from (irb):1 )

I also tried to test run 'plane.rb' file located in
/usr/local/lib/ruby/gems/1.8/gems/ruby-opengl-0.40.1/lib/examples
using TextMate and got the following:

/Volumes/TextMate1.5.5/TextMate.app/Contents/SharedSupport/Support/lib/
scriptmate.rb:107:in `initialize': Permission denied -
/usr/local/lib/ruby/gems/1.8/gems/ruby-opengl-0.40.1/examples/plane.rb
(Errno::EACCES) from /Volumes/TextMate

What am I doing wrong?


Sy


--
Posted via http://www.ruby-....

Julian Raschke

10/12/2007 8:08:00 AM

0

Hi,

> /Volumes/TextMate1.5.5/TextMate.app/Contents/SharedSupport/Support/lib/
> scriptmate.rb:107:in `initialize': Permission denied -
> /usr/local/lib/ruby/gems/1.8/gems/ruby-opengl-0.40.1/examples/plane.rb
> (Errno::EACCES) from /Volumes/TextMate
>
> What am I doing wrong?

I think TextMate needs write access to files to run them (bug?). I had
the very same problem yesterday, even with a 'properly' installed
TextMate, and I ended up copying the example .rb files to the Desktop.
Could run them from there without problems.

Julian

Sy Yoon

10/12/2007 9:40:00 AM

0

Julian Raschke wrote:
> Hi,
>
>> /Volumes/TextMate1.5.5/TextMate.app/Contents/SharedSupport/Support/lib/
>> scriptmate.rb:107:in `initialize': Permission denied -
>> /usr/local/lib/ruby/gems/1.8/gems/ruby-opengl-0.40.1/examples/plane.rb
>> (Errno::EACCES) from /Volumes/TextMate
>>
>> What am I doing wrong?
>
> I think TextMate needs write access to files to run them (bug?). I had
> the very same problem yesterday, even with a 'properly' installed
> TextMate, and I ended up copying the example .rb files to the Desktop.
> Could run them from there without problems.
>
> Julian

Ok, I copied an exmple rb file to the Desktop where TextMate is, but
still get:

LoadError: Failed to lookup Init function
/usr/local/lib/ruby/gems/1.8/gems/ruby-opengl-0.40.1/lib/gl.bundle

method require in custom_require.rb at line 32
at top level in gl-test.rb at line 46

???

BTW, my TextMate is a trial version.

Sy

--
Posted via http://www.ruby-....

Jesús Gabriel y Galán

10/12/2007 10:23:00 PM

0

On 10/12/07, Sy Yoon <fold3mani@yahoo.com> wrote:
> Julian Raschke wrote:
> > Hi,
> >
> >> /Volumes/TextMate1.5.5/TextMate.app/Contents/SharedSupport/Support/lib/
> >> scriptmate.rb:107:in `initialize': Permission denied -
> >> /usr/local/lib/ruby/gems/1.8/gems/ruby-opengl-0.40.1/examples/plane.rb
> >> (Errno::EACCES) from /Volumes/TextMate
> >>
> >> What am I doing wrong?
> >
> > I think TextMate needs write access to files to run them (bug?). I had
> > the very same problem yesterday, even with a 'properly' installed
> > TextMate, and I ended up copying the example .rb files to the Desktop.
> > Could run them from there without problems.
> >
> > Julian
>
> Ok, I copied an exmple rb file to the Desktop where TextMate is, but
> still get:
>
> LoadError: Failed to lookup Init function
> /usr/local/lib/ruby/gems/1.8/gems/ruby-opengl-0.40.1/lib/gl.bundle
>
> method require in custom_require.rb at line 32
> at top level in gl-test.rb at line 46
>
> ???
>
> BTW, my TextMate is a trial version.

Don't know if it might be the same problem, but just in case. I was
trying to install opengl in Ubuntu, but couldn't make it work, until
someone pointed to me that opengl.0.40.1 required version 1.9+ of
rubygems. So maybe you could try to upgrade to version 1.9 to see if
that's the problem?

In Ubuntu:

sudo gem update --system

Don't know how to do it in Mac OS X, though.

Hope this helps,

Jesus.