Failing to install Nokogiri gem

I'm working on a rails app that allows for image attachments to each use account. I'm using paperclip and amazon web services:

gem 'paperclip'
gem 'aws-sdk'

When I run bundle install, I get this message:

extconf failed, exit code 1

Gem files will remain installed in /usr/local/rvm/gems/ruby-2.1.2/gems/nokogiri-1.6.5 for inspection.
Results logged to /usr/local/rvm/gems/ruby-2.1.2/extensions/x86_64-darwin-13/2.1.0-static/nokogiri-1.6.5/gem_make.out
An error occurred while installing nokogiri (1.6.5), and Bundler cannot continue.
Make sure that `gem install nokogiri -v '1.6.5'` succeeds before bundling.

When I try running 'gem install nokogiri', I get this message:

extconf failed, exit code 1

Gem files will remain installed in /usr/local/rvm/gems/ruby-2.1.2/gems/nokogiri-1.6.5 for inspection.
Results logged to /usr/local/rvm/gems/ruby-2.1.2/extensions/x86_64-darwin-13/2.1.0-static/nokogiri-1.6.5/gem_make.out


My OS is Mac OS X 10.9.4 Mavericks. **What's going on here? How can I get nokogiri to install and behave properly?**

**Full stack trace**:

Building native extensions with: '--use-system-libraries'
This could take a while...
ERROR: Error installing nokogiri:
ERROR: Failed to build gem native extension.

/usr/local/rvm/rubies/ruby-2.1.2/bin/ruby extconf.rb --use-system-libraries
checking if the C compiler accepts ... yes
checking if the C compiler accepts -Wno-error=unused-command-line-argument-hard-error-in-future... yes
Building nokogiri using system libraries.
libxml2 version 2.6.21 or later is required!
*** 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.

Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/usr/local/rvm/rubies/ruby-2.1.2/bin/ruby
--help
--clean
--use-system-libraries
--with-zlib-dir
--without-zlib-dir
--with-zlib-include
--without-zlib-include=${zlib-dir}/include
--with-zlib-lib
--without-zlib-lib=${zlib-dir}/lib
--with-xml2-dir
--without-xml2-dir
--with-xml2-include
--without-xml2-include=${xml2-dir}/include
--with-xml2-lib
--without-xml2-lib=${xml2-dir}/lib
--with-libxml-2.0-config
--without-libxml-2.0-config
--with-pkg-config
--without-pkg-config
--with-xslt-dir
--without-xslt-dir
--with-xslt-include
--without-xslt-include=${xslt-dir}/include
--with-xslt-lib
--without-xslt-lib=${xslt-dir}/lib
--with-libxslt-config
--without-libxslt-config
--with-exslt-dir
--without-exslt-dir
--with-exslt-include
--without-exslt-include=${exslt-dir}/include
--with-exslt-lib
--without-exslt-lib=${exslt-dir}/lib
--with-libexslt-config
--without-libexslt-config

extconf failed, exit code 1

Gem files will remain installed in /usr/local/rvm/gems/ruby-2.1.2/gems/nokogiri-1.6.5 for inspection.
Results logged to /usr/local/rvm/gems/ruby-2.1.2/extensions/x86_64-darwin-13/2.1.0-static/nokogiri-1.6.5/gem_make.out

> I had the same issue earlier today. I had updated my xcode and had not
> agreed to the terms yet. Running sudo `xcodebuild -license` and agreeing
> got my bundle working again.

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As per the nokogiri installation instruction installing,

`sudo apt-get install zlib1g-dev`

solved the issue for me.

To take from [dylanjhunt's awesome answer on Github][1], just in case anyone hasn't tried it,

> Just to add to this, I was having a very similar issue that was
> resolved by updating dev tools.
>
> `xcode-select --install`
>
> Hoping someone sees this that had not tried doing this yet and it
> helps.

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On Ubuntu, try installing the following dependencies:

sudo apt-get install gcc ruby-dev libxslt-dev libxml2-dev zlib1g-dev

I solved this by installing the xcode dependencies that Nokogiri needs to be installed:

xcode-select --install

After that run bundle install again and it should work.

install gcc first

in *buntu :
apt-get install gcc

after that U may requer most dev libs, such as
libxml2 / zlib / etc.
see build log(path in my case) :
/var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/nokogiri-1.6.8.1/mkmf.log
for string like - fatal error: zlib.h: No such file or directory

I didn't get the same error message as you, but I wanted to note what I finally found as the **extraordinarily simple solution** for installing nokogiri on Ubuntu:

**Turns out the nokogiri build process depends on `patch`.**

**Run: `sudo apt-get install patch`**

I was working on a VM (a vagrant box, actually), which is why I didn't already have `patch` installed.

The error I got (after a lot of other stuff that looked like an error but was actually just a warning) was:

Extracting libxml2-2.9.2.tar.gz into tmp/x86_64-pc-linux-gnu/ports/libxml2/2.9.2... OK
Running patch with /var/lib/gems/1.9.1/gems/nokogiri-1.6.6.2/ports/patches/libxml2/0001-Revert-Missing-initialization-for-the-catalog-module.patch...
Running 'patch' for libxml2 2.9.2... ERROR, review '/var/lib/gems/1.9.1/gems/nokogiri-1.6.6.2/ext/nokogiri/tmp/x86_64-pc-linux-gnu/ports/libxml2/2.9.2/patch.log' to see what happened.

I've deleted the log by now (the above was in my terminal session), but the `patch.log` file referenced above was absurdly simple; it just said something like `patch not found`.

Boy did I feel silly for all the digging around I did installing libraries trying to fix it! :)

after upgrading to Rails 4.2.4 (which inculdes Nokogiri `1.6.6.2`) on Ubuntu 14.04 (I'm using RVM) I needed to do this:

sudo apt-get install libgmp-dev


or


sudo apt-get install libgmp3-dev

Package that did it:

apt-get install libghc-zlib-dev

Other possible candidate:

`zlib1g-dev` on 12.04

found it [here][1]


[1]:

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