Ruby extensions
From wikinotes
Building ruby gems with C extensions.
Documentation
ruby extension docs https://github.com/ruby/ruby/blob/master/doc/extension.rdoc gems with extensions docs https://guides.rubygems.org/gems-with-extensions/
Ruby Cli Params
INCLUDE/LIB directories (extconf.rb params).
# https://bugs.ruby-lang.org/issues/7173 ruby \ --with-opt-dir /opt/package # add dir with 'include/' and 'lib/' subdirs (c headers/libs)
