Forum: Ruby zlib.so (LoadError)

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Michael M. (Guest)
on 2008-12-18 00:59
I'm getting the error below when trying to install ruby gems on Windows
Vista.
My Ruby version is 1.8.7 and gems 1.3.1.  I installed Ruby from the zip
file ruby-1.8.7-i386-mswin32.zip and gems by running ruby setup.rb.

The zlib.so file is in the directory so I don't know why it can't find
it.  Help appreciated.

programs/ruby/lib/ruby/1.8/i386-mswin32/zlib.so: 126: The specified
module could not be found.   -
c:/programs/ruby/lib/ruby/1.8/i386-mswin32/zlib.so (LoadError)
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
  from c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/package.rb:10
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
  from c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/format.rb:9
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
  from c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/installer.rb:11
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/dependency_installer.rb:3
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/commands/install_command.rb:4
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:140:in
`load_and_instantiate'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:65:in
`[]'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:118:in
`find_command'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:104:in
`process_args'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:75:in
`run'
  from
c:/programs/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:39:in
`run'
  from c:/programs/ruby/bin/gem:24
Sebastian W. (Guest)
on 2008-12-18 01:59
Are you compiling from source? I've never tried to get Ruby running
under Vista besides the One-Click Installer, but on Linux, the zlib
errors usually come up when I don't have the development libraries
installed.
Alex 2. (Guest)
on 2008-12-18 02:15
Hello,

You need the zlib.dll.

1. http://www.zlib.net/ and download compiled DLL, version 1.2.3
2. Copy downloaded zlib1.dll into
C:\ruby-1.8.7-i386-mswin32\bin\zlib.dll
 Notice that the name changes from zlib1.dll to zlib.dll

- Alex
Michael M. (Guest)
on 2008-12-18 04:10
Tks Alex.

I just copied the zlib1.dll to zlib.dll and it seems this works too.

Michael

Alex 2k8 wrote:
> Hello,
>
> You need the zlib.dll.
>
> 1. http://www.zlib.net/ and download compiled DLL, version 1.2.3
> 2. Copy downloaded zlib1.dll into
> C:\ruby-1.8.7-i386-mswin32\bin\zlib.dll
>  Notice that the name changes from zlib1.dll to zlib.dll
>
> - Alex
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