Error installing charlock_holmes v0.7.5

[d4nyll]

I am trying to install linguist on Ubuntu 17.10 (Linux 4.13.0-16-lowlatency #19-Ubuntu SMP PREEMPT Wed Oct 11 19:51:52 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux)

But it comes with the following errors:

Installing charlock_holmes 0.7.5 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /tmp/bundler20171027-16936-kh8cujcharlock_holmes-0.7.5/gems/charlock_holmes-0.7.5/ext/charlock_holmes
/usr/bin/ruby2.3 -r ./siteconf20171027-16936-mhapsh.rb extconf.rb
checking for main() in -licui18n... no
checking for main() in -licui18n... no


***************************************************************************************
*********** icu required (brew install icu4c or apt-get install libicu-dev) ***********
***************************************************************************************
*** 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/bin/$(RUBY_BASE_NAME)2.3
        --with-icu-dir
        --without-icu-dir
        --with-icu-include
        --without-icu-include=${icu-dir}/include
        --with-icu-lib
        --without-icu-lib=${icu-dir}/lib
        --with-icui18nlib
        --without-icui18nlib
        --with-icui18nlib
        --without-icui18nlib

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

  /tmp/bundler20171027-16936-kh8cujcharlock_holmes-0.7.5/extensions/x86_64-linux/2.3.0/charlock_holmes-0.7.5/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /tmp/bundler20171027-16936-kh8cujcharlock_holmes-0.7.5/gems/charlock_holmes-0.7.5 for inspection.
Results logged to /tmp/bundler20171027-16936-kh8cujcharlock_holmes-0.7.5/extensions/x86_64-linux/2.3.0/charlock_holmes-0.7.5/gem_make.out

An error occurred while installing charlock_holmes (0.7.5), and Bundler cannot continue.
Make sure that `gem install charlock_holmes -v '0.7.5'` succeeds before bundling.

In Gemfile:
  gto was resolved to 0.1.0, which depends on
    github-linguist was resolved to 5.3.1, which depends on
      charlock_holmes

My guess is it relates to #3777?

[pchaigno]

You need to install libicu-dev.

[canidam]

I encounter the same problem on Windows. gem doesn't find libicu-dev when I try to install it. Any suggestions?

[pchaigno]

@canidam Please see https://stackoverflow.com/questions/16272567/gem-charlock-holmes-installation-error-on-windows-xp and brianmario/charlock_holmes#84.