Question

When I run ‘rails server’ I get the following error:

Could not find gem 'sqlite3 (>= 0, runtime)' in any of the gem sources listed in your Gemfile.

My GemFile looks like this: gem 'sqlite3'

Also when I run the port command it says it does not recognize that command:

Mohammad-Azams-MacBook-Pro:blog azamsharp$ port install sqlite3 +universal
-bash: port: command not found

Any suggestions?

UPDATE 1:

I run sudo gem install sqlite3 and got the following message:

Mohammad-Azams-MacBook-Pro:blog azamsharp$ sudo gem install sqlite3
Building native extensions.  This could take a while...
ERROR:  Error installing sqlite3:
    ERROR: Failed to build gem native extension.

/usr/local/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 ***
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.

UPDATE 2: (Contents of GemFile)

source 'http://rubygems.org'

gem 'rails', '3.0.7'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

gem 'sqlite3'

# Use unicorn as the web server
# gem 'unicorn'

# Deploy with Capistrano
# gem 'capistrano'

# To use debugger (ruby-debug for Ruby 1.8.7+, ruby-debug19 for Ruby 1.9.2+)
# gem 'ruby-debug'
# gem 'ruby-debug19', :require => 'ruby-debug'

# Bundle the extra gems:
# gem 'bj'
# gem 'nokogiri'
# gem 'sqlite3-ruby', :require => 'sqlite3'
# gem 'aws-s3', :require => 'aws/s3'

# Bundle gems for the local environment. Make sure to
# put test-only gems in this group so their generators
# and rake tasks are available in development mode:
# group :development, :test do
#   gem 'webrat'
# end

UPDATE 3:

Mohammad-Azams-MacBook-Pro:blog azamsharp$ port search sqlite3
-bash: port: command not found


UPDATE 4:

After downloading the install Macports I ran the bundle install again and here is the result:

Installing sqlite3 (1.3.3) with native extensions /usr/local/lib/ruby/site_ruby/1.8/rubygems/installer.rb:483:inbuild_extensions’: ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)

/usr/local/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 *
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.

`

UPDATE 5:

which sqlite3 gives me the following:

Mohammad-Azams-MacBook-Pro:blog azamsharp$ which sqlite3
/opt/local/bin/sqlite3

UPDATE 5:

which -a sqlite3 gives me the following:

Mohammad-Azams-MacBook-Pro:blog azamsharp$ which -a sqlite3
/opt/local/bin/sqlite3
/usr/local/bin/sqlite3
/usr/bin/sqlite3

Answer 1

If you have problems talking about /usr/local/bin/ruby extconf.rb checking for sqlite3.h then it’s probably something to do with macports.

First, make sure you have xcode installed. Run:

gcc

and you should get:

i686-apple-darwin10-gcc-4.2.1: no input files

If you do, then let’s install homebrew

Then, a list of commands to install homebrew, update rubygems, and upgrade rails

brew install sqlite
gem update --system
gem install bundler
gem install rails -v=3.0.8

Then, to check, rails -v should output Rails 3.0.7