`attach_function': Function 'Pa_GetVersion' not found in [libportaudio.so] (FFI::NotFoundError)

[tbraun89]

I get this error when I try to run the examples:

~/.rvm/gems/ruby-2.1.0/gems/ffi-1.9.3/lib/ffi/library.rb:261:in `attach_function': Function 'Pa_GetVersion' not found in [libportaudio.so] (FFI::NotFoundError)
    from ~/.rvm/gems/ruby-2.1.0/gems/ffi-portaudio-0.1.2/lib/ffi-portaudio/api.rb:9:in `<module:API>'
    from ~/.rvm/gems/ruby-2.1.0/gems/ffi-portaudio-0.1.2/lib/ffi-portaudio/api.rb:1:in `<top (required)>'
    from ~/.rvm/rubies/ruby-2.1.0/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from ~/.rvm/rubies/ruby-2.1.0/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from ~/.rvm/gems/ruby-2.1.0/gems/ffi-portaudio-0.1.2/lib/ffi-portaudio.rb:9:in `<module:PortAudio>'
    from ~/.rvm/gems/ruby-2.1.0/gems/ffi-portaudio-0.1.2/lib/ffi-portaudio.rb:3:in `<top (required)>'
    from ~/.rvm/rubies/ruby-2.1.0/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:135:in `require'
    from ~/.rvm/rubies/ruby-2.1.0/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:135:in `rescue in require'
    from ~/.rvm/rubies/ruby-2.1.0/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:144:in `require'
    from spectrum.rb:1:in `<main>'

On this system:

ruby 2.1.0p0 (2013-12-25 revision 44422) [x86_64-linux]
Linux 3.12-1-amd64 #1 SMP Debian 3.12.8-1 (2014-01-19) x86_64 GNU/Linux

I also tried it with older ruby versions but that didn't change anything. (libportaudio-dev [18.1-7.1] is installed)

[nanki]

I wrote this for portaudio v19. You can choose portaudio19-dev package on debian system.