Hi,

I got the same problem when install and run tyrantmanager:
http://copiousfreetime.rubyforge.org/tyrantmanager/

# tyrantmanager setup /data/tyrant
/usr/lib64/ruby/gems/1.8/gems/loquacious-1.6.4/lib/loquacious/
undefined.rb:87: warning: parenthesize argument(s) for future version
/usr/lib64/ruby/gems/1.8/gems/ffi-0.6.3/lib/ffi/library.rb:79:in
`ffi_libraries': no library specified (LoadError)
	from /usr/lib64/ruby/gems/1.8/gems/ffi-0.6.3/lib/ffi/library.rb:
106:in `attfunc'
	from /usr/lib64/ruby/gems/1.8/gems/rufus-tokyo-1.0.7/lib/rufus/tokyo/
tyrant/lib.rb:59
	from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
	from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
	from /usr/lib64/ruby/gems/1.8/gems/rufus-tokyo-1.0.7/lib/rufus/tokyo/
tyrant.rb:32
	from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
	from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
	from /usr/lib64/ruby/gems/1.8/gems/tyrantmanager-1.6.0/lib/
tyrant_manager/tyrant_instance.rb:2
	from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
	from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
	from /usr/lib64/ruby/gems/1.8/gems/tyrantmanager-1.6.0/lib/
tyrant_manager.rb:249
	from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
	from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
	from /usr/lib64/ruby/gems/1.8/gems/tyrantmanager-1.6.0/bin/
tyrantmanager:9
	from /usr/bin/tyrantmanager:19:in `load'
	from /usr/bin/tyrantmanager:19

The content of library.rb from beginning to line 79:

module FFI
  CURRENT_PROCESS = USE_THIS_PROCESS_AS_LIBRARY = Object.new

  module Library
    CURRENT_PROCESS = FFI::CURRENT_PROCESS
    LIBC = FFI::Platform::LIBC

    def self.extended(mod)
      raise RuntimeError.new("must only be extended by module") unless
mod.kind_of?(Module)
    end

    def ffi_lib(*names)

      ffi_libs = names.map do |name|
        if name == FFI::CURRENT_PROCESS
          FFI::DynamicLibrary.open(nil, FFI::DynamicLibrary::RTLD_LAZY
| FFI::DynamicLibrary::RTLD_LOCAL)
        else
          libnames = (name.is_a?(::Array) ? name : [ name ]).map { |n|
[ n, FFI.map_library_name(n) ].uniq }.flatten.compact
          lib = nil
          errors = {}

          libnames.each do |libname|
            begin
              lib = FFI::DynamicLibrary.open(libname,
FFI::DynamicLibrary::RTLD_LAZY | FFI::DynamicLibrary::RTLD_LOCAL)
              break if lib

            rescue Exception => ex
              errors[libname] = ex
            end
          end

          if lib.nil?
            raise LoadError.new(errors.values.join('. '))
          end

          # return the found lib
          lib
        end
      end

      @ffi_libs = ffi_libs
    end


    def ffi_convention(convention)
      @ffi_convention = convention
    end


    def ffi_libraries
      raise LoadError.new("no library specified") if !defined?
(@ffi_libs) || @ffi_libs.empty?
      @ffi_libs
    end

I'm not familiar with Ruby. Where should I put "ffi_lib LIBC" in this
file?

On Feb 19 2010, 4:11 pm, Jesús García Sáez <blax...@gmail.com> wrote:

> On Thu, Feb 18, 2010 at 20:45, Wayne Meissner <wmeiss...@gmail.com> wrote:

> > 2010/2/19 Jesús García Sáez <blax...@gmail.com>:

>

> >> Obviously it fails telling you there isnolibspecified, the hello
> >> world I see in github is this [0], where did you get that example?

>

> > Its probably in an example on the wiki somewhere.  Anyone who feels
> > like jumping in and fixing up the examples to specify a lib, feel
> > free.

>
> You were right, I fixed it.
>
> Stefan, just put "ffi_lib LIBC" (or FFI::Platform::LIBC in jruby,
> 'cause jruby's ffi is a bit outdated) and there you go.