Ubuntu 20.04.2 LTS
ERROR: Error installing nokogiri:
ERROR: Failed to build gem native extension.
current directory: /var/lib/gems/2.7.0/gems/nokogiri-1.12.3/ext/nokogiri
/usr/bin/ruby2.7 -I /usr/lib/ruby/2.7.0 -r ./siteconf20210820-2026-1695b1w.rb extconf.rb
checking for whether -std=c99 is accepted as CFLAGS... *** 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.
solution
sudo apt-get install build-essential patch ruby-dev zlib1g-dev liblzma-dev
gem install nokogiri
from
https://stackoverflow.com/questions/33996523/error-installing-nokogiri-failed-to-build-gem-native-extension-libiconv-is-mi