Why Does Installing Nokogiri on MAC Os Fail With Libiconv Is Missing

Why does installing Nokogiri on Mac OS fail with libiconv is missing?

I had the same issue. Unfortunately the "Installing Nokogiri" doesn't cover Iconv issues. Here's how I resolved the issue.

First install homebrew, it'll make your life easier. If you already have it installed, be sure to grab the latest formulae by updating like so:

brew update

Note: In OSX 10.9+ you may need to install xCode command tools to allow you to install libiconv.

xcode-select --install

then install a newer version of libiconv

brew install libiconv

then install your gem

gem install nokogiri -- --with-iconv-dir=/usr/local/Cellar/libiconv/1.14

Why does installing Nokogiri on Mac OS fail with libiconv is missing?

I had the same issue. Unfortunately the "Installing Nokogiri" doesn't cover Iconv issues. Here's how I resolved the issue.

First install homebrew, it'll make your life easier. If you already have it installed, be sure to grab the latest formulae by updating like so:

brew update

Note: In OSX 10.9+ you may need to install xCode command tools to allow you to install libiconv.

xcode-select --install

then install a newer version of libiconv

brew install libiconv

then install your gem

gem install nokogiri -- --with-iconv-dir=/usr/local/Cellar/libiconv/1.14

Failure to install nokogiri libiconv is missing on Yosemite Mac OS X 10.10

The nokogiri install tutorial provides the solution:

# bash
brew unlink gcc
gem uninstall nokogiri
xcode-select --install
gem install nokogiri

If you don't have Xcode 6.1, yet, you may install it from the apple developer download site (section additional tools), as described in this blog post.

Why does installing Nokogiri on Mac OS fail with libiconv is missing?

I had the same issue. Unfortunately the "Installing Nokogiri" doesn't cover Iconv issues. Here's how I resolved the issue.

First install homebrew, it'll make your life easier. If you already have it installed, be sure to grab the latest formulae by updating like so:

brew update

Note: In OSX 10.9+ you may need to install xCode command tools to allow you to install libiconv.

xcode-select --install

then install a newer version of libiconv

brew install libiconv

then install your gem

gem install nokogiri -- --with-iconv-dir=/usr/local/Cellar/libiconv/1.14

'libiconv is missing' error when installing Nokogiri on Cygwin

Eventually figured this out myself ... had to direct the installation to use the system's pre-installed dependencies rather than compiling them, and tell it where the libxml2 dev headers were located. This was succcessful for me:

gem install nokogiri -v '1.6.3.1' -- --use-system-libraries --with-xml2-include=/usr/include/libxml2

libiconv missing on OSX 10.8 installing nokogiri

There are instructions at http://nokogiri.org/tutorials/installing_nokogiri.html which explain what's worked in the past for homebrew 0.9 users.

If those instructions don't work for you, please email nokogiri-talk and we'll figure it out and update the installation documentation.

rails : install nokogiri fails on Mac OSX Yosemite

One of issues was that you were manually installing Nokogiri 1.6.6.2, but not including the nokogiri gem entry in your Gemfile. Bundler will specifically only show your app the gems that are listed in the file.

It wasn't clear to me if you were tied to nokogiri 1.6.1 because it was a dependency of another gem. If there was another gem calling for 1.6.1 then you would investigate a newer version of that gem, which hopefully depended on the newer Nokogiri. bundle update <othergem> would attempt to do so.

Just wanted to be clear that I wasn't suggesting modifying another gem's dependencies in your lock file as they were set for a reason by that gem's author.

Since you initially specified gem 'nokogiri', '~> 1.6.1' in your Gemfile you were locked to that after the first bundle install. bundle update nokogiri would try to update you to the latest. Or manually changing the Gemfile to 1.6.6.2 or more loosely ~> 1.6 or 1.6.6.

Also, as @the Tin Man mentioned using sudo install to put gems into the Apple system ruby isn't the best way to go. I definitely recommend using one of the Ruby version managers like RVM or rbenv as he linked in his comment.

Error to install Nokogiri on OSX 10.9 Maverick?

I found this log and saw that gcc-4.2 was not found:

package configuration for libxslt
cflags: -I/usr/local/Cellar/libxslt/1.1.28/include -I/usr/local/Cellar/libxml2/2.9.1/include/libxml2
ldflags: -L/usr/local/Cellar/libxslt/1.1.28/lib -L/usr/local/Cellar/libxml2/2.9.1/lib
libs: -lxslt -lxml2 -lz -lpthread -liconv -lm -lxml2

package configuration for libxml-2.0
cflags: -I/usr/local/Cellar/libxml2/2.9.1/include/libxml2
ldflags: -L/usr/local/Cellar/libxml2/2.9.1/lib
libs: -lxml2

package configuration for libiconv is not found
"/usr/bin/gcc-4.2 -o conftest -I/Users/ericcamalionte/.rvm/rubies/ruby-1.9.2-p320/include/ruby-1.9.1/x86_64-darwin11.4.0 -I/Users/ericcamalionte/.rvm/rubies/ruby-1.9.2-p320/include/ruby-1.9.1/ruby/backward -I/Users/ericcamalionte/.rvm/rubies/ruby-1.9.2-p320/include/ruby-1.9.1 -I. -I/usr/local/Cellar/libxslt/1.1.28/include -I/usr/local/Cellar/libxml2/2.9.1/include/libxml2 -I/usr/local/Cellar/libiconv/1.14/include -I/Users/ericcamalionte/.rvm/gems/ruby-1.9.2-p320@dns-panel/gems/nokogiri-1.6.0/ports/x86_64-apple-darwin13.0.0/libxml2/2.8.0/include -I/Users/ericcamalionte/.rvm/gems/ruby-1.9.2-p320@dns-panel/gems/nokogiri-1.6.0/ports/x86_64-apple-darwin13.0.0/libxslt/1.1.26/include -I/Users/ericcamalionte/.rvm/usr/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE    -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-missing-field-initializers -Wshorten-64-to-32 -Wno-long-long  -fno-common -pipe  -g -DXP_UNIX -O3 -Wall -Wcast-qual -Wwrite-strings -Wconversion -Wmissing-noreturn -Winline -DNOKOGIRI_USE_PACKAGED_LIBRARIES -DNOKOGIRI_LIBXML2_PATH='"/Users/ericcamalionte/.rvm/gems/ruby-1.9.2-p320@dns-panel/gems/nokogiri-1.6.0/ports/x86_64-apple-darwin13.0.0/libxml2/2.8.0"' -DNOKOGIRI_LIBXSLT_PATH='"/Users/ericcamalionte/.rvm/gems/ruby-1.9.2-p320@dns-panel/gems/nokogiri-1.6.0/ports/x86_64-apple-darwin13.0.0/libxslt/1.1.26"' -I/usr/local/Cellar/libxslt/1.1.28/include -I/usr/local/Cellar/libxml2/2.9.1/include/libxml2  -I/usr/local/Cellar/libxml2/2.9.1/include/libxml2  conftest.c  -L. -L/Users/ericcamalionte/.rvm/rubies/ruby-1.9.2-p320/lib -L/usr/local/Cellar/libxslt/1.1.28/lib -L/usr/local/Cellar/libxml2/2.9.1/lib -L/usr/local/Cellar/libiconv/1.14/lib -L/Users/ericcamalionte/.rvm/gems/ruby-1.9.2-p320@dns-panel/gems/nokogiri-1.6.0/ports/x86_64-apple-darwin13.0.0/libxml2/2.8.0/lib -L/Users/ericcamalionte/.rvm/gems/ruby-1.9.2-p320@dns-panel/gems/nokogiri-1.6.0/ports/x86_64-apple-darwin13.0.0/libxslt/1.1.26/lib -L/Users/ericcamalionte/.rvm/usr/lib -L.  -Wl,-rpath,/Users/ericcamalionte/.rvm/gems/ruby-1.9.2-p320@dns-panel/gems/nokogiri-1.6.0/ports/x86_64-apple-darwin13.0.0/libxml2/2.8.0/lib -Wl,-rpath,/Users/ericcamalionte/.rvm/gems/ruby-1.9.2-p320@dns-panel/gems/nokogiri-1.6.0/ports/x86_64-apple-darwin13.0.0/libxslt/1.1.26/lib -L/usr/local/Cellar/libxslt/1.1.28/lib -L/usr/local/Cellar/libxml2/2.9.1/lib -L/usr/local/Cellar/libxml2/2.9.1/lib     -lxslt -lxml2 -lz -lpthread -liconv -lm -lxml2  -lxml2  -lruby.1.9.1-static  -lpthread -ldl -lobjc  "
sh: /usr/bin/gcc-4.2: No such file or directory
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: int main() {return 0;}
/* end */

To solve this problem I intalled apple-gcc42 using homebrew brew install apple-gcc42 and created a symlink to my /usr/bin :

sudo ln -s /usr/local/Cellar/apple-gcc42/4.2.1-5666.3/bin/gcc-4.2 /usr/bin/gcc-4.2

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