typo install problem

Now installing Typo version 5.0.2 ..

Typo GEM install failed :

INFO: `gem install -y` is now default and will be removed
INFO: use --ignore-dependencies to install only the gems you list
Bulk updating Gem source index for: http://gems.rubyforge.org/
Building native extensions. This could take a while...
ERROR: Error installing typo:
ERROR: Failed to build gem native extension.

/usr/bin/ruby1.8 extconf.rb install typo --include-dependencies
checking for sqlite3.h... no

make
make: *** No rule to make target `ruby.h', needed by `sqlite3_api_wrap.o'. Stop.

Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1 for inspection.
Results logged to /usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1/ext/sqlite3_api/gem_make.out

.. failed! See the error message above for the reason why.

Status: 
Closed (fixed)