«

I wanted to take a look at ruby's opengl but I'm having issues -- can
you help me out? I installed it and I can require it in irb or a file
without issue:

irb
001:0> require 'opengl'
true
002:0> include Gl, Glu, Glut
Object


I downloaded the opengl gears demo here:
http://members.shaw.ca/michael.brook...ng_shaders.zip
and this won't run. It errors out with:
ruby: symbol lookup error:
/usr/lib/ruby/gems/1.9.3dev/gems/ruby-opengl-0.60.1/lib/glut.so:
undefined symbol: STR2CSTR

ruby -v
ruby 1.9.3dev (2010-05-31 trunk 2810 [powerpc64-linux]
gem specification ruby-opengl|grep -1 version
name: ruby-opengl
version: !ruby/object:Gem::Version
prerelease: false
--
- 1
version: 0.60.1
platform: ruby
...
rubyforge_project: ruby-opengl
rubygems_version: 1.3.7
signing_key:
specification_version: 2
summary: OpenGL Interface for Ruby
--
Posted via http://www.ruby-forum.com/.

I wrote:
> I downloaded the opengl gears demo here:
> http://members.shaw.ca/michael.brook...ng_shaders.zip

I'm sorry that's the wrong gears demo link ..
http://aspn.activestate.com/ASPN/Mai...y-talk/2574414
--
Posted via http://www.ruby-forum.com/.

Roberto Cm wrote:
> I wanted to take a look at ruby's opengl but I'm having issues -- can
> you help me out? I installed it and I can require it in irb or a file
> without issue:
>
> irb
> 001:0> require 'opengl'
> true
> 002:0> include Gl, Glu, Glut
> Object
>
>
> I downloaded the opengl gears demo here:
> http://members.shaw.ca/michael.brook...ng_shaders.zip
> and this won't run. It errors out with:
> ruby: symbol lookup error:
> /usr/lib/ruby/gems/1.9.3dev/gems/ruby-opengl-0.60.1/lib/glut.so:
> undefined symbol: STR2CSTR

Try installing and running it with ruby 1.8.x. The STR2CSTR macro is not
used in 1.9.2, so it looks like someone will have to update the opengl lib.

Joel VanderWerf wrote:
> Roberto Cm wrote:
>>
>> I downloaded the opengl gears demo here:
>> http://members.shaw.ca/michael.brook...ng_shaders.zip
>> and this won't run. It errors out with:
>> ruby: symbol lookup error:
>> /usr/lib/ruby/gems/1.9.3dev/gems/ruby-opengl-0.60.1/lib/glut.so:
>> undefined symbol: STR2CSTR
>
> Try installing and running it with ruby 1.8.x. The STR2CSTR macro is not
> used in 1.9.2, so it looks like someone will have to update the opengl
> lib.
that's a shame ...

I can confirm it does work, although very slowly, in 1.8. thanks
--
Posted via http://www.ruby-forum.com/.