Rails3+herokuで開発はsqlite3、heroku上はPostgreSQLを使う設定

gistfile1.txt

$ git push heroku master
Counting objects: 85, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (58/58), done.
Writing objects: 100% (68/68), 160.05 KiB | 141 KiB/s, done.
Total 68 (delta 24), reused 0 (delta 0)

-----> Heroku receiving push
-----> Removing .DS_Store files
-----> Ruby/Rails app detected
-----> Installing dependencies using Bundler version 1.2.0.pre
Running: bundle install --without development:test --path vendor/bundle --binstubs bin/ --deployment
Fetching gem metadata from https://rubygems.org/.......
Using rake (0.9.2.2)
Using i18n (0.6.0)
Using multi_json (1.3.6)
Using activesupport (3.2.6)
Using builder (3.0.0)
Using activemodel (3.2.6)
Using erubis (2.7.0)
Using journey (1.0.4)
Using rack (1.4.1)
Using rack-cache (1.2)
Using rack-test (0.6.1)
Using hike (1.2.1)
Using tilt (1.3.3)
Using sprockets (2.1.3)
Using actionpack (3.2.6)
Using mime-types (1.19)
Using polyglot (0.3.3)
Using treetop (1.4.10)
Using mail (2.4.4)
Using actionmailer (3.2.6)
Using arel (3.0.2)
Using tzinfo (0.3.33)
Using activerecord (3.2.6)
Using activeresource (3.2.6)
Using coffee-script-source (1.3.3)
Using execjs (1.4.0)
Using coffee-script (2.2.0)
Using rack-ssl (1.3.2)
Using json (1.7.3)
Using rdoc (3.12)
Using thor (0.15.4)
Using railties (3.2.6)
Using coffee-rails (3.2.2)
Using jquery-rails (2.0.2)
Using bundler (1.2.0.pre)
Using rails (3.2.6)
Using sass (3.1.20)
Using sass-rails (3.2.5)
Installing sqlite3 (1.3.6) with native extensions
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/usr/local/bin/ruby extconf.rb
checking for sqlite3.h... no
sqlite3.h is missing. Try 'port install sqlite3 +universal'
or 'yum install sqlite-devel' and check your shared library search path (the
location where your sqlite3 shared library is located).
*** 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
--without-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=/usr/local/bin/ruby
--with-sqlite3-dir
--without-sqlite3-dir
--with-sqlite3-include
--without-sqlite3-include=${sqlite3-dir}/include
--with-sqlite3-lib
--without-sqlite3-lib=${sqlite3-dir}/lib
--enable-local
--disable-local
Gem files will remain installed in /tmp/build_2n2m921ssi879/vendor/bundle/ruby/1.9.1/gems/sqlite3-1.3.6 for inspection.
Results logged to /tmp/build_2n2m921ssi879/vendor/bundle/ruby/1.9.1/gems/sqlite3-1.3.6/ext/sqlite3/gem_make.out
An error occurred while installing sqlite3 (1.3.6), and Bundler cannot continue.
Make sure that `gem install sqlite3 -v '1.3.6'` succeeds before bundling.
!
! Failed to install gems via Bundler.
!
! Heroku push rejected, failed to compile Ruby/rails app

To git@heroku.com:myapp.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git@heroku.com:myapp.git'

gistfile2.txt

group :production do
  gem 'pg'
end
group :development, :test do
  gem 'sqlite3'
end