ruby-on-rails - 为什么 bundle 安装不让pg gem完全安装？

我已经安装了如图所示的pg gem，但是。。。

Building native extensions.  This could take a while...
    Successfully installed pg-0.11.0
    ERROR:  Could not find a valid gem '—' (>= 0) in any repository
    ERROR:  Could not find a valid gem '–with-pg-config=/usr/local/pg/bin/pg_config' (>= 0) in any repository
    1 gem installed
    Installing ri documentation for pg-0.11.0...
    Installing RDoc documentation for pg-0.11.0...

当我捆绑安装，但它无法完全安装pg gem时，会发生一些奇怪的事情：

Fetching source index for http://rubygems.org/
Using rake (0.9.2)
Using abstract (1.0.0)
Using activesupport (3.0.10)
Using builder (2.1.2)
Using i18n (0.5.0)
Using activemodel (3.0.10)
Using erubis (2.6.6)
Using rack (1.2.3)
Using rack-mount (0.6.14)
Using rack-test (0.5.7)
Using tzinfo (0.3.29)
Using actionpack (3.0.10)
Using mime-types (1.16)
Using polyglot (0.3.2)
Using treetop (1.4.10)
Using mail (2.2.19)
Using actionmailer (3.0.10)
Using arel (2.0.10)
Using activerecord (3.0.10)
Using activeresource (3.0.10)
Using annotate (2.4.0)
Using bundler (1.0.18)
Using diff-lcs (1.1.2)
Using factory_girl (1.3.3)
Using rdoc (3.9.3)
Using thor (0.14.6)
Using railties (3.0.10)
Using rails (3.0.10)
Using factory_girl_rails (1.0)
Using faker (0.3.1)
Using gravatar_image_tag (1.0.0.pre2)
Using nokogiri (1.5.0)
Installing pg (0.11.0) with native extensions /Users/******/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/installer.rb:552:in `rescue in block in build_extensions': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)

然后我得到的行告诉我可能缺少必要的库或头：

   *** 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=/Users/TonyNg/.rvm/rubies/ruby-1.9.2-p180/bin/ruby
    --with-pg
    --without-pg
    --with-pg-dir
    --without-pg-dir
    --with-pg-include
    --without-pg-include=${pg-dir}/include
    --with-pg-lib
    --without-pg-lib=${pg-dir}/lib
    --with-pg-config
extconf.rb:24:in ``': No such file or directory - /users/****/

这是我的gem文件：

  source 'http://rubygems.org'

gem 'rails', '3.0.10'

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

gem 'pg'
gem 'gravatar_image_tag', '1.0.0.pre2'
gem 'will_paginate', '3.0.pre2'



group :development do
  gem 'rspec-rails', '2.6.1'
  gem 'annotate', '2.4.0'
  gem 'faker', '0.3.1'
end

group :test do
  gem 'rspec-rails', '2.6.1'
  gem 'webrat', '0.7.1'
  gem 'spork', '0.9.0.rc8'
  gem 'factory_girl_rails', '1.0'
end

# 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

我该如何解决这个问题？提前谢谢。
编辑
答：诀窍是在pg_config的正确路径下安装pg gem，而在它没有完全安装之前。我运行了'gem install pg--with pg config=/opt/local/lib/postgresql84/bin/pg_config'，以获取我在上一条注释下放置的路径。我只需要找到我的pg_配置文件并运行gem安装。

最佳答案

您需要在安装libpq dev之前