【发布时间】：2011-08-29 10:17:02
【问题描述】：
我已经如图所示安装了 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...
当我捆绑安装时发生了一些奇怪的事情，它不会完全安装 pg gem：
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我可能缺少必要的库或标题：
*** 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？提前致谢。
编辑 答：诀窍是在 正确 路径下安装 pg gem 到 pg_config，而在它没有完全安装之前。我为我在上一条评论下写下的路径运行了 'gem install pg -- --with-pg-config=/opt/local/lib/postgresql84/bin/pg_config '。我只需要找到我的 pg_config 文件并在该文件下运行 gem install。
【问题讨论】：
-
您是否安装了 PostgreSQL 及其库？
mkmf.log有什么要说的？ -
@mu 太短，我已经搜索了我的 mac，但找不到此特定事件的“mkmf.log”。我一定没有安装该库，因为我得到：'正在检查 pg_config... 否 没有 pg_config... 无论如何都在尝试。如果构建失败，请再试一次 --with-pg-config=/path/to/pg_config 检查 libpq-fe.h... no'。我确实安装了 PostgreSQL84。但是当我捆绑安装库时，这些是我遇到的错误。
-
如果你在 Lion 上你需要指定架构，Google lion pg gem x86_64 archflag env
-
@mu 太短。是的，我知道，它在 /opt/local/lib/postgresql84/bin/pg_config 下，我刚刚打开它。我想你在谈论 exec 文件？我还有一个 pg_config 文件夹和 .h 文件。我不在 Lion 上，但我尝试了 'sudo env ARCHFLAGS="-arch x86_64" gem install pg'，但也没有用。
-
@mu 太短。我得到了它！抱歉打扰了，我对此很陌生。诀窍是在 pg_config 的 correct 路径下安装 pg gem，而在它没有完全安装之前。我为我在上一条评论下写下的路径运行了 'gem install pg -- --with-pg-config=/opt/local/lib/postgresql84/bin/pg_config '。非常感谢！
标签： ruby-on-rails postgresql installation gem bundler