Rails:安装pg gem时出错
可能重复：
Postgres - the last version 0.14.0 of the “pg” gem gives error
我是rails的新手。我想使用PostgreSQL，因为Heroku也使用它，但是我在安装pg gem时遇到了麻烦。显然，有些文件丢失了，Makefile无法创建？
我的gem文件如下所示：
source 'https://rubygems.org'
gem 'rails', '3.2.6'
gem 'faker', '1.0.1'
gem 'pg', '0.12.2'
gem 'json'
group :development, :test do
gem 'rspec-rails', '2.10.0'
end
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails', '2.0.0'
group :test do
gem 'capybara', '1.1.2'
gem 'factory_girl_rails', '1.4.0'
end当我运行bundle install时，我在安装pg gem时得到以下错误：
Installing pg (0.14.0) with native extensions
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb
checking for pg_config... yes
Using config values from /usr/local/bin/pg_config
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.h... yes
checking for pg_config_manual.h... yes
checking for PQconnectdb() in -lpq... no
checking for PQconnectdb() in -llibpq... no
checking for PQconnectdb() in -lms/libpq... no
Can't find the PostgreSQL client library (libpq)
*** 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=/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/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
--without-pg-config
--with-pg_config
--without-pg_config
--with-pqlib
--without-pqlib
--with-libpqlib
--without-libpqlib
--with-ms/libpqlib
--without-ms/libpqlib
Gem files will remain installed in /Users/KennyGWang/.bundler/tmp/18833/gems/pg-0.14.0 for inspection.
Results logged to /Users/KennyGWang/.bundler/tmp/18833/gems/pg-0.14.0/ext/gem_make.out
An error occured while installing pg (0.14.0), and Bundler cannot continue.
Make sure that `gem install pg -v '0.14.0'` succeeds before bundling.我使用自制的brew install postgresql安装了postgresql，因此which psql提供了/usr/local/bin/psql。
如有任何帮助，我们不胜感激！
回答 4
Stack Overflow用户
发布于 2012-07-12 03:32:21
你用的是Mac电脑吗？如果是这样的话-最简单的方法是
- 确保已安装Xcode (可从应用程序商店获取)
- 在应用程序的根目录或
gem install pg
中使用Homebrew
brew install postgresql
gem uninstall pg
- either
bundle install
Stack Overflow用户
发布于 2012-07-12 03:42:15
安装postgresql的步骤
- Install PostgreSQL及其库
sudo apt-get install postgresql postgresql-contrib libpq-dev
- 安装后为postgresql创建用户
sudo postgres创建用户--超级用户$USER
或
sudo -u postgres创建用户pgs_root
- 为postgresql用户设置用户密码
sudo -u postgres psql postgres --设置"user=$USER“用户\密码: postgres=#
或
sudo -u postgres psql postgres postgres=# \passsword pgs_root
- 将postgresql.conf文件配置为使PostgreSQL侦听本地主机或侦听外部IP或其他内容，请将此行更改为IP或' localhost‘
gedit /etc/postgresql/8.4//postgresql.conf listen_addresses =‘本地主机’
与mysql查询浏览器一样，postgresql也有一个名为pgadmin的GUI。要安装，请运行以下命令
sudo apt-get install pgadmin3Stack Overflow用户
发布于 2012-07-12 02:44:14
尝试包含此内容，而不是pg
gem install postgres-pr或
gem install ruby-pg编辑
你已经这么做了吗？
$ sudo apt-get install postgresql
$ rails new pg -d postgreshttp://www.funonrails.com/2011/03/getting-started-with-rails-3-postgres.html
https://stackoverflow.com/questions/11439207
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