Rubygem 1.3.1: zlib LoadError

why am i getting this zlib error?

RUBYGEMS VERSION: 1.3.1
RUBY VERSION: 1.9.1 (2009-01-30 patchlevel 0) [i686-linux]

/opt/ruby/bin$ gem list
/opt/ruby/lib/ruby/1.9.1/rubygems/spec_fetcher.rb:1:in `require': no
such file to load -- zlib (LoadError)
        from /opt/ruby/lib/ruby/1.9.1/rubygems/spec_fetcher.rb:1:in
`<top (required)>'
        from
/opt/ruby/lib/ruby/1.9.1/rubygems/commands/query_command.rb:3:in
`require'
        from
/opt/ruby/lib/ruby/1.9.1/rubygems/commands/query_command.rb:3:in `<top
(required)>'
        from
/opt/ruby/lib/ruby/1.9.1/rubygems/commands/list_command.rb:2:in
`require'
        from
/opt/ruby/lib/ruby/1.9.1/rubygems/commands/list_command.rb:2:in `<top
(required)>'
        from /opt/ruby/lib/ruby/1.9.1/rubygems/command_manager.rb:140:in
`require'
        from /opt/ruby/lib/ruby/1.9.1/rubygems/command_manager.rb:140:in
`rescue in load_and_instantiate'
        from /opt/ruby/lib/ruby/1.9.1/rubygems/command_manager.rb:132:in
`load_and_instantiate'
        from /opt/ruby/lib/ruby/1.9.1/rubygems/command_manager.rb:65:in
`[]'
        from /opt/ruby/lib/ruby/1.9.1/rubygems/command_manager.rb:118:in
`find_command'
        from /opt/ruby/lib/ruby/1.9.1/rubygems/command_manager.rb:104:in
`process_args'
        from /opt/ruby/lib/ruby/1.9.1/rubygems/command_manager.rb:75:in
`run'
        from /opt/ruby/lib/ruby/1.9.1/rubygems/gem_runner.rb:39:in `run'
        from /opt/ruby/bin/gem:24:in `<main>'

···

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Kinroc Cornik wrote:

why am i getting this zlib error?

RUBYGEMS VERSION: 1.3.1
RUBY VERSION: 1.9.1 (2009-01-30 patchlevel 0) [i686-linux]

/opt/ruby/bin$ gem list
/opt/ruby/lib/ruby/1.9.1/rubygems/spec_fetcher.rb:1:in `require': no
such file to load -- zlib (LoadError)

You probably don't have the zlib development library installed. Ensure both the runtime and development library are installed.

this problems also happen in hpux(11.23, 11.31).

ruby installer doesn't distinguish between sl and so extension.

I need to make all symbolic links from sl to so in /usr/local/lib/ruby/*

2009. 04. 07, 오전 10:24, Matt Falkenhagen 작성:

···

Kinroc Cornik wrote:

why am i getting this zlib error?
RUBYGEMS VERSION: 1.3.1
RUBY VERSION: 1.9.1 (2009-01-30 patchlevel 0) [i686-linux]
/opt/ruby/bin$ gem list
/opt/ruby/lib/ruby/1.9.1/rubygems/spec_fetcher.rb:1:in `require': no
such file to load -- zlib (LoadError)

You probably don't have the zlib development library installed. Ensure both the runtime and development library are installed.