error installing sqlite3 gem on solaris

[Will Parsons]

I am attempting to install the sqlite3 gem under Solaris and am getting the
following error:

------------------
101 beech# gem install sqlite3-ruby
Building native extensions. This could take a while...
ERROR: Error installing sqlite3-ruby:
ERROR: Failed to build gem native extension.

/opt/csw/bin/ruby extconf.rb install sqlite3-ruby
extconf.rb:1:in `require': no such file to load -- mkmf (LoadError)
from extconf.rb:1


Gem files will remain installed in /opt/csw/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.4 for inspection.
Results logged to /opt/csw/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.4/ext/sqlite3_api/gem_make.out

 

[Roger Pack]

/opt/csw/bin/ruby extconf.rb install sqlite3-ruby

extconf.rb:1:in `require': no such file to load -- mkmf (LoadError)
from extconf.rb:1

Looks like your ruby is somehow installed wrong since that should be
available.
=r