"mkmf.rb can't find header files for ruby"の対応 - Qiita$ gem install bson_ext -v '1.10.2' Building native extensions. This could take a while... ERROR: Error installing bson_ext: ERROR: Failed to build gem native extension. /usr/bin/ruby2.0 extconf.rb mkmf.rb can't find header files for ruby at /usr/share/ruby/include/ruby.h Gem files will remain installed in /home/ec2-user/.gem/ruby/2.0/gems/bson_ext-1.10.2 for inspection. Results logged to /home/ec2
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