Rails：安装pg gem时出错 [英] Rails: Error installing pg gem

问题描述

可能重复：

Postgres- pg的最新版本0.14.0宝石给出错误

我是新手。我想使用PostgreSQL，因为Heroku也使用PostgreSQL，但是我在安装 pg gem时遇到了麻烦。显然，某些文件丢失了，无法创建Makefile？

I'm new to rails. I want to use PostgreSQL since Heroku uses it too, but I'm having a bad time installing the pg gem. Apparently, some files are missing and a Makefile cannot be created?

我的gem文件如下：

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

当我运行捆绑安装时，安装pg gem时出现以下错误：

And when I run bundle install I get the following error when installing the pg gem:

    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.

我使用自制软件安装了postgresql，酿造了postgresql ，因此 psql 给了我 / usr / local / bin / psql

I installed postgresql using homebrew, brew install postgresql, thus which psql gives me /usr/local/bin/psql

感谢您的帮助！

推荐答案

您在Mac上吗？如果是这样，最简单的方法是

Are you on a Mac? If so - the easiest way to do this is to

1. 确保已安装Xcode（可以从应用商店中获取）


2. 使用自制软件


3. brew安装postgresql


4. gem卸载pg


5. 在应用程序根目录中的捆绑安装或 gem安装pg

1. make sure you have Xcode installed (you can get it from the app store)
2. use Homebrew
3. brew install postgresql
4. gem uninstall pg
5. either bundle install in your application's root or gem install pg

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