Error while bundle install for idn-ruby

Question

I have twitter-text gem in my application.

When I do a bundle install I am getting the below error.

Need to solve it on high priority.

I also went to the github page https://github.com/twitter/twitter-text/issues/225

but could not find a solution there.

I tried to install directly using the line below but got the same error.

gem install idn-ruby -v '0.1.0'

Error

Fetching idn-ruby 0.1.0
Installing idn-ruby 0.1.0 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /home/inuscg/.rvm/gems/ruby-2.3.0@idt-two/gems/idn-ruby-0.1.0/ext
/home/inuscg/.rvm/rubies/ruby-2.3.0/bin/ruby -r ./siteconf20180427-13217-1wpq9sy.rb extconf.rb
checking for main() in -lidn... no
ERROR: could not find idn library!

  Please install the GNU IDN library or alternatively specify at least one
  of the following options if the library can only be found in a non-standard
  location:
    --with-idn-dir=/path/to/non/standard/location
        or
    --with-idn-lib=/path/to/non/standard/location/lib
    --with-idn-include=/path/to/non/standard/location/include

*** 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=/home/inuscg/.rvm/rubies/ruby-2.3.0/bin/$(RUBY_BASE_NAME)
    --with-idn-dir
    --without-idn-dir
    --with-idn-include
    --without-idn-include=${idn-dir}/include
    --with-idn-lib
    --without-idn-lib=${idn-dir}/lib
    --with-idnlib
    --without-idnlib

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /home/inuscg/.rvm/gems/ruby-2.3.0@idt-two/extensions/x86_64-linux/2.3.0/idn-ruby-0.1.0/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /home/inuscg/.rvm/gems/ruby-2.3.0@idt-two/gems/idn-ruby-0.1.0 for inspection.
Results logged to /home/inuscg/.rvm/gems/ruby-2.3.0@idt-two/extensions/x86_64-linux/2.3.0/idn-ruby-0.1.0/gem_make.out

An error occurred while installing idn-ruby (0.1.0), and Bundler cannot continue.
Make sure that `gem install idn-ruby -v '0.1.0'` succeeds before bundling.

In Gemfile:
  twitter-text was resolved to 2.1.0, which depends on
    idn-ruby

Thank you in advance

Answer 1

As per the error show in logs ERROR: could not find idn library!. idn library is required to install twitter text. Try to install that first and then install the gem. Try with

sudo apt-get install libldap2-dev
sudo apt-get install libidn11-dev

Hope this solves your problem.

For mac:

brew install libidn

Answer 2

On a Mac, you can do:

$ brew install libidn