# Can't find libxml-ruby gem **URL:** \ **Category:** ruby-talk\ **Created:** [28 December 2009 21:33 UTC](https://rubytalk.org/t/cant-find-libxml-ruby-gem/56809 "2009-12-28T21:33:37Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Peter\_Alta](https://avatars.discourse-cdn.com/v4/letter/p/e68b1a/32.png) [@Peter\_Alta](https://rubytalk.org/u/Peter_Alta)\ **Post date:** [28 December 2009 21:33 UTC](https://rubytalk.org/t/cant-find-libxml-ruby-gem/56809/1 "2009-12-28T21:33:37Z")
I am unable to find a libxml-ruby gem. I've pasted some diagnostic info below. Could someone please point me in the right direction? Thank you. C:\\>irb irb(main):001:0\> require 'libxml-ruby' LoadError: no such file to load -- libxml-ruby         from C:/Program Files/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in `gem\_original\_require'         from C:/Program Files/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in `require'         from (irb):1 irb(main):002:0\> exit C:\\>gem install -r libxml-ruby ERROR: While executing gem ... (Gem::GemNotFoundException)     Could not find libxml-ruby (\> 0) in any repository C:\\>gem sources \*\*\* CURRENT SOURCES \*\*\* [http://gems.rubyforge.org](http://gems.rubyforge.org) [http://gems.github.com](http://gems.github.com) C:\\>gem -v 0.9.4 C:\\>ruby -v ruby 1.8.6 (2007-09-24 patchlevel 111) [i386-mswin32] > **路路路** > > -- > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). ---
**Author:** ![Phillip\_Gawlowski1](https://avatars.discourse-cdn.com/v4/letter/p/f17d59/32.png) [@Phillip\_Gawlowski1](https://rubytalk.org/u/Phillip_Gawlowski1)\ **Post date:** [28 December 2009 21:49 UTC](https://rubytalk.org/t/cant-find-libxml-ruby-gem/56809/2 "2009-12-28T21:49:58Z")
> I am unable to find a libxml-ruby gem. > I've pasted some diagnostic info below. > C:\\>gem sources > \*\*\* CURRENT SOURCES \*\*\* > > [http://gems.rubyforge.org](http://gems.rubyforge.org) > [http://gems.github.com](http://gems.github.com) gems.github.com is defunct 馃槈 > C:\\>gem -v > 0.9.4 RubyGems is at 1.3.5 by now, which you'll need for > C:\\>ruby -v > ruby 1.8.6 (2007-09-24 patchlevel 111) [i386-mswin32] PS C:\Users\CynicalRyan\> ruby -v ruby 1.8.6 (2009-08-04 patchlevel 383) [i386-mingw32] You will need the devkit, and have to go header-file hunting. You can get a MinGW build of Ruby + devkit at RubyInstaller.org. RubyGems at RubyGems.org > **路路路** > > On 28.12.2009 22:33, Peter Alta wrote: > > -- > Phillip Gawlowski ---
**Author:** ![Peter\_Alta](https://avatars.discourse-cdn.com/v4/letter/p/e68b1a/32.png) [@Peter\_Alta](https://rubytalk.org/u/Peter_Alta)\ **Post date:** [28 December 2009 22:31 UTC](https://rubytalk.org/t/cant-find-libxml-ruby-gem/56809/3 "2009-12-28T22:31:57Z")
Phillip Gawlowski wrote: > You can get a MinGW build of Ruby + devkit at RubyInstaller.org. > RubyGems at RubyGems.org Thank you. That was a helpful start. I updated to RubyGems 1.3.5 and installed the MingGW build with no apparent problem. > You will need the devkit, and have to go header-file hunting. What is "header-file hunting"? I don't even know where to begin. Is installing libxml-ruby beyond the scope of a non-C programmer? Here is what I get from gem now: > **路路路** > > ---------------------------------------------------------------------- > C:\\>gem install -r libxml-ruby > Building native extensions. This could take a while... > ERROR: Error installing libxml-ruby: >         ERROR: Failed to build gem native extension. > > checking for socket() in -lsocket... no > checking for gethostbyname() in -lnsl... no > checking for atan() in -lm... yes > checking for inflate() in -lz... no > checking for inflate() in -lzlib... no > checking for inflate() in -lzlib1... no > \*\*\* extconf.rb failed \*\*\* > Could not create Makefile due to some reason, probably lack of > necessary libraries and/or headers. Check the mkmf.log file for more > details. You may need configuration options. > ---------------------------------------------------------------------- > > I'm a little confused by "You may need configuration > options." Is that meant for the "gem" command? Or for > the extconf.rb that gem is apparently running? > > Any hints on what to do next? > > Thanks much. > -- > Posted via [http://www.ruby-forum.com/\](http://www.ruby-forum.com/%5C). ---
**Author:** ![Phillip\_Gawlowski1](https://avatars.discourse-cdn.com/v4/letter/p/f17d59/32.png) [@Phillip\_Gawlowski1](https://rubytalk.org/u/Phillip_Gawlowski1)\ **Post date:** [28 December 2009 22:51 UTC](https://rubytalk.org/t/cant-find-libxml-ruby-gem/56809/4 "2009-12-28T22:51:02Z")
> What is "header-file hunting"? Finding all the header-files the compiler (NOT the gem command, but the compiler the devkit provides!) needs to be able to build a program or a library. > I don't even know where to begin. > Is installing libxml-ruby beyond the scope > of a non-C programmer? On Windows? Probably. Very likely, in fact. > Here is what I get from gem now: > > ---------------------------------------------------------------------- > C:\\>gem install -r libxml-ruby > Building native extensions. This could take a while... > ERROR: Error installing libxml-ruby: >          ERROR: Failed to build gem native extension. > > checking for socket() in -lsocket... no > checking for gethostbyname() in -lnsl... no > checking for atan() in -lm... yes > checking for inflate() in -lz... no > checking for inflate() in -lzlib... no > checking for inflate() in -lzlib1... no > \*\*\* extconf.rb failed \*\*\* > Could not create Makefile due to some reason, probably lack of > necessary libraries and/or headers. Check the mkmf.log file for more > details. You may need configuration options. > ---------------------------------------------------------------------- > > I'm a little confused by "You may need configuration > options." Is that meant for the "gem" command? Or for > the extconf.rb that gem is apparently running? Neither. It's for the C-Compiler. > Any hints on what to do next? Use Nokogiri (nokogiri.org). 馃槈 Or, if you must use libxml, set up a virtual machine with Linux, and use that (which brings its own set of difficulties. virtualbox.org is a good start to get going with virtualization). The Devkit requires you to be either lucky, or to be at least well-versed enough in working with compilers, to fix the issues the configuration step throws at you. It's best if you are seasoned-enough C-Programmer to dig into the actual C code to fix bugs, and produce a build that can be distributed for Windows. What you can do, is log a bug with the libxml-ruby team, and lobby them to provide a MinGW32 compatible build. > **路路路** > > On 28.12.2009 23:31, Peter Alta wrote: > > -- > Phillip Gawlowski ---
**Author:** ![Tim\_Ferrell](https://avatars.discourse-cdn.com/v4/letter/t/ea666f/32.png) [@Tim\_Ferrell](https://rubytalk.org/u/Tim_Ferrell)\ **Post date:** [26 January 2010 21:22 UTC](https://rubytalk.org/t/cant-find-libxml-ruby-gem/56809/5 "2010-01-26T21:22:52Z")
Phillip Gawlowski wrote: > > What is "header-file hunting"? > > Finding all the header-files the compiler (NOT the gem command, but the > compiler the devkit provides!) needs to be able to build a program or a > library. I was able to get this gem to build on Windows (Win7 x64 to be precise) by downloading the MinGW-based oneclick installer (RC1 as of now) and the devkit that accompanies it and installing them... I then found the necessary headers and libs needed to get the libxml-ruby gem to build and packaged them up:   [http://www.mcgeecorp.com/downloads/win-install-libxml-ruby.zip](http://www.mcgeecorp.com/downloads/win-install-libxml-ruby.zip) ~760kb Just unzip and run the ruby install script to build... Note: the script assumes you installed Ruby to C:\Ruby ... you can also pass an alternate install dir to the script:   C:\Ruby19\bin\ruby install\_libxml\_gem.rb C:/Ruby19 HTH, Tim > **路路路** > > > On 28.12.2009 23:31, Peter Alta wrote: > > -- > Posted via [http://www.ruby-forum.com/\](http://www.ruby-forum.com/%5C).