sqlite3 gem freebsd issue

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

        /home/zul/.rvm/rubies/ruby-1.8.7-p352/bin/ruby extconf.rb
checking for sqlite3.h... yes
checking for sqlite3_libversion_number() in -lsqlite3... no
sqlite3 is missing. Try 'port install sqlite3 +universal'
or 'yum install sqlite3-devel' and check your shared library search path (the
location where your sqlite3 shared library is located).
*** extconf.rb failed ***

Can be solved by: 

# gem install sqlite3 -- --with-sqlite3-dir=/usr/local