Gem :: Ext :: BuildError:错误:无法构建gem原生扩展.postgresql和ROR

Question

我需要在应用程序ROR中的生产环境中安装postgresql,以便在使用heroku之后使用它,但是当我尝试安装gem'pg'时会触发以下错误.我是新手,所以我不知道那样做

我正在使用ruby 1.9.3p547(2014-05-14修订版45962)[i686-linux] rails

Rails 3.2.19 Ubuntu 12.04

的Gemfile

来源' https://rubygems.org '

宝石'轨道','3.2.19'

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

gem 'mysql2'
gem 'hirb'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'

  # See https://github.com/sstephenson/execjs#readme for more supported runtimes
  # gem 'therubyracer', :platforms => :ruby

  gem 'uglifier', '>= 1.0.3'
end

gem 'jquery-rails'

group :production do
  gem 'pg'

end


# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'

# To use Jbuilder templates for JSON
# gem 'jbuilder'

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

# Deploy with Capistrano
# gem 'capistrano'

# To use debugger
# gem 'debugger'

我运行捆绑包更新或捆绑安装时出现问题

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /home/fernando/.rvm/rubies/ruby-1.9.3-p547/bin/ruby -r ./siteconf20141203-14261-3uu564.rb extconf.rb 
checking for pg_config... no
No pg_config... trying anyway. If building fails, please try again with
 --with-pg-config=/path/to/pg_config
checking for libpq-fe.h... no
Can't find the 'libpq-fe.h header
*** 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=/home/fernando/.rvm/rubies/ruby-1.9.3-p547/bin/ruby
    --with-pg
    --without-pg
    --with-pg-config
    --without-pg-config
    --with-pg_config
    --without-pg_config
    --with-pg-dir
    --without-pg-dir
    --with-pg-include
    --without-pg-include=${pg-dir}/include
    --with-pg-lib
    --without-pg-lib=${pg-dir}/lib

extconf failed, exit code 1

Gem files will remain installed in /home/fernando/.rvm/gems/ruby-1.9.3-p547@ticket_master/gems/pg-0.17.1 for inspection.
Results logged to /home/fernando/.rvm/gems/ruby-1.9.3-p547@ticket_master/extensions/x86-linux/1.9.1/pg-0.17.1/gem_make.out
An error occurred while installing pg (0.17.1), and Bundler cannot continue.
Make sure that `gem install pg -v '0.17.1'` succeeds before bundling.

Answer 1

您的问题在日志中描述 No pg_config... trying anyway.

这个配置与libpq依赖关系有关,当我开始使用rails时遇到了这种问题,所以,我认为答案只是按照以下步骤进行

在控制台中运行此命令.

sudo apt-get install libpq-dev 
sudo gem install pg

Answer 2

上述解决方案对我不起作用,但这里的说明没有.我将总结如下:

• 确保你已经安装了PostgreSQL
• 找到你的新pg_config路径sudo find / -name "pg_config"
• 复制路径
• 跑 gem install pg -- --with-pg-config=path/to/pg_config
• 成功!