ubuntu:/opt/td-agent/usr/sbin$ sudo td-agent-gem install fluent-plugin-logzio
Fetching: net-http-persistent-2.9.4.gem (100%)
Successfully installed net-http-persistent-2.9.4
Fetching: serverengine-2.1.0.gem (100%)
Successfully installed serverengine-2.1.0
Fetching: strptime-0.2.3.gem (100%)
Building native extensions.  This could take a while...
ERROR:  Error installing fluent-plugin-logzio:
	ERROR: Failed to build gem native extension.

    current directory: /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/strptime-0.2.3/ext/strptime
/opt/td-agent/embedded/bin/ruby -r ./siteconf20190311-4307-65kdm.rb extconf.rb
checking for rb_timespec_now()... *** 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
	--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=/opt/td-agent/embedded/bin/ruby
/opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:467:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:552:in `try_link0'
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:567:in `try_link'
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:747:in `try_func'
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:1032:in `block in have_func'
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:923:in `block in checking_for'
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:351:in `block (2 levels) in postpone'
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:321:in `open'
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:351:in `block in postpone'
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:321:in `open'
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:347:in `postpone'
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:922:in `checking_for'
	from /opt/td-agent/embedded/lib/ruby/2.1.0/mkmf.rb:1031:in `have_func'
	from extconf.rb:3:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /opt/td-agent/embedded/lib/ruby/gems/2.1.0/extensions/x86_64-linux/2.1.0/strptime-0.2.3/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /opt/td-agent/embedded/lib/ruby/gems/2.1.0/gems/strptime-0.2.3 for inspection.
Results logged to /opt/td-agent/embedded/lib/ruby/gems/2.1.0/extensions/x86_64-linux/2.1.0/strptime-0.2.3/gem_make.out