require 'libsvm' fails (MS windows)

[jeppevb]

I've installed ruby, devkit and rubygems and sucessfully installed the rb-libsvm gem. When I try to run the examples or go require 'libsvm' in irb i get this:

C:\dev>ruby
require 'libsvm'
^Z
c:/dev/ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': 193: %1 is not a valid Win32 application.   - c:/dev/ruby193/lib/ruby/gems/1.9.1/gems/rb-libsvm-1.0.8/lib/libsvm/libsvm_ext.so (LoadError)
        from c:/dev/ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
        from c:/dev/ruby193/lib/ruby/gems/1.9.1/gems/rb-libsvm-1.0.8/lib/libsvm.rb:2:in `'
        from c:/dev/ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:60:in `require'
        from c:/dev/ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:60:in `rescue in require'
        from c:/dev/ruby193/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:35:in `require'
        from -:1:in `'

[febeling]

I don't have access to a Windows machine, so I can't really help. Patches would be welcome.

[jeppevb]

I'll look into it. I suppose the module does not compile properly for
windows.

On 6 September 2012 21:52, Florian Ebeling notifications@github.com wrote:

I don't have access to a Windows machine, so I can't really help. Patches
would be welcome.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/10#issuecomment-8345049.

[neovintage]

I only have access to windows via a virtual machine. I'll see if I have
everything I need to try to do it.

On Thu, Sep 6, 2012 at 12:52 PM, Florian Ebeling
notifications@github.comwrote:

I don't have access to a Windows machine, so I can't really help. Patches
would be welcome.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/10#issuecomment-8345049.

[jeppevb]

I installed the libsvm-ruby-swig (0.4.0) gem (both gems installed) and the error changed.

C:\dev\Ruby193\lib\ruby\gems\1.9.1\gems\rb-libsvm-1.0.8\examples>ruby toy.rb
toy.rb:4:in `': uninitialized constant Libsvm::Problem (NameError)
C:\dev\Ruby193\lib\ruby\gems\1.9.1\gems\rb-libsvm-1.0.8\examples>ruby text.rb
text.rb:30:in `block in ': uninitialized constant Libsvm::Node (NameError)
        from text.rb:28:in `each'
        from text.rb:28:in `'
C:\dev\Ruby193\lib\ruby\gems\1.9.1\gems\rb-libsvm-1.0.8\examples>gem list

[ksaveras]

Need MS windows version also

[ksaveras]

when You install libsvm-ruby-swig, it loads libsvm.rb file, not extension.
When You have rb-libsvm only - it tries to load libsvm_ext.so but fails on windows

[febeling]

This package, rb-libsvm, doesn't support Windows, unfortunately (unless somebody supplies a patch).

Please note that libsvm-ruby-swig and rb-libsvm packages are alternatives and not meant to be used together.

[febeling]

Just saw that rake-compiler has support for cross-compiling now, and also provides a special rake-compiler-dev-box VM for this. Might make implementing this thing easier.

https://github.com/rake-compiler/rake-compiler#cross-compilation---the-future-is-now

[febeling]

I don't find the time to do this. So the new status pretty much is: PR welcome.

[georgeu2000]

@jeppevb - Not really an answer to your issue, but I'll share with you my experience. Using Ruby on Windows makes it more difficult than Mac or Ubuntu. I suggest installing Ubuntu in Windows. It is very simple and you do not need dual boot.

[febeling]

@Kraviscloud What is gp?