wikiti
commented
5 years ago I'm facing this issue too with Ubuntu 18.04.1 and ruby 2.1.2.
I've solved this problem by downloading a copy of the repository, applying this minor change:
diff --git a/ext/charlock_holmes/extconf.rb b/ext/charlock_holmes/extconf.rb
index 4c97643..0144880 100644
--- a/ext/charlock_holmes/extconf.rb
+++ b/ext/charlock_holmes/extconf.rb
@@ -1,5 +1,7 @@
require 'mkmf'
+$CXXFLAGS ||= ''
+
CWD = File.expand_path(File.dirname(__FILE__))
def sys(cmd)
puts " -- #{cmd}"Then, I installed the local copy of the gem:
cd path/to/charlock_holmes
gem build charlock_holmes.gemspec && gem install charlock_holmes-0.7.6.gem
neakni
First off, yes, libicu-devel is installed.
gem install charlock_holmes
Building native extensions. This could take a while... ERROR: Error installing charlock_holmes: ERROR: Failed to build gem native extension.
/usr/local/rvm/rubies/ruby-2.1.2/bin/ruby -r ./siteconf20180921-15180-1f6r92q.rb extconf.rb checking for main() in -licui18n... yes checking for main() in -licui18n... yes checking for unicode/ucnv.h... yes checking for main() in -lz... yes checking for main() in -licuuc... yes checking for main() in -licudata... yes extconf.rb failed Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options.
Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/usr/local/rvm/rubies/ruby-2.1.2/bin/ruby --with-icu-dir --without-icu-dir --with-icu-include --without-icu-include=${icu-dir}/include --with-icu-lib --without-icu-lib=${icu-dir}/lib --with-icui18nlib --without-icui18nlib --with-icui18nlib --without-icui18nlib --with-zlib --without-zlib --with-icuuclib --without-icuuclib --with-icudatalib --without-icudatalib extconf.rb:60:in '': undefined method '<<' for nil:NilClass (NoMethodError)
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/usr/local/rvm/gems/ruby-2.1.2/extensions/x86_64-linux/2.1.0/charlock_holmes-0.7.6/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /usr/local/rvm/gems/ruby-2.1.2/gems/charlock_holmes-0.7.6 for inspection. Results logged to /usr/local/rvm/gems/ruby-2.1.2/extensions/x86_64-linux/2.1.0/charlock_holmes-0.7.6/gem_make.out
There's nothing useful in the mkmf.log file (there's a warning about a set but unused variable named 'p') and the gem_make.out is just a regurgitation of the above output.
Help is appreciated, thank you.