Without package "ruby-dev", I got this error on my Kali Linux:
Building native extensions. This could take a while...
ERROR: Error installing json:
ERROR: Failed to build gem native extension.
current directory: /var/lib/gems/2.5.0/gems/json-1.8.6/ext/json/ext/generator
/usr/bin/ruby2.5 -r ./siteconf20190117-11443-w5znm6.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h
5.9 KiB
Executable File
5.9 KiB
Executable File