无法在Mountain Lion上安装pg gem [英] Can't install pg gem on Mountain Lion

问题描述

升级到Mountain Lion后，我在Rails上遇到了很多麻烦.

I have been having a lot of troubles with Rails after upgrading to Mountain Lion.

到目前为止，尝试解决这些问题并在Internet上搜索了数小时，以确保升级后我的系统具有运行rails的所有依赖项:

Trying to trouble shoot these and searching for hours on the internet so far I have done the following to ensure my system has all the dependencies to run rails after the upgrade:

1. 我更新了Homebrew安装程序
2. 我更新了RVM安装
3. 我安装了XCode命令行工具
4. 我安装了GCC 如前所述
5. 我将Ruby版本升级到了

1. I updated my Homebrew installation
2. I updated my RVM installation
3. I installed the XCode command line tools
4. I installed GCC as mentioned
5. I upgraded my version of Ruby to

红宝石1.9.2p290(2011-07-09修订版32553)[x86_64-darwin10.8.0]

ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-darwin10.8.0]

我的Rails版本已验证为Rails 3.2.6

我还发现Mountain Lion在Postgres中存在一些问题，因此我看到了

My Rails version is verified as Rails 3.2.6

I also found out that Mountain Lion has some issues with Postgres so I saw this post and found out that I need to add this line to my Bash profile:

export PATH="/usr/local/bin:/usr/bin:$PATH"

现在，我进入升级前曾在Snow Leopard上正常运行的Rails应用程序，当我在命令行上运行rails s时，出现以下错误:

Now I go to my Rails app that used to run fine on Snow Leopard before I upgraded, and when I run rails s at the command line I get the following error:

AM@~/Documents/RailsWS/app0815 >gem install pg
 Building native extensions.  This could take a while...
 ERROR:  Error installing pg:
 ERROR: Failed to build gem native extension.
 /Users/AM/.rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb
 checking for pg_config... yes
 Using config values from /usr/bin/pg_config
 checking for libpq-fe.h... *** 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
--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/AM/.rvm/rubies/ruby-1.9.2-p290/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
 /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:368:in `try_do': 
 The complier failed to generate an executable file. (RuntimeError)
 You have to install development tools first.
from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:452:in `try_cpp'
from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:853:in `block in   find_header'
from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:693:in `block in checking_for'
from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:280:in `block (2  levels) in postpone'
from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:254:in `open'
from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:280:in `block in postpone'
from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:254:in `open'
from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:276:in `postpone'
from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:692:in `checking_for'
from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:852:in `find_header'
from extconf.rb:41:in `<main>'


 Gem files will remain installed in /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/pg-0.14.1 for inspection.
 Results logged to /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/pg-0.14.1/ext/gem_make.out

当我进入Rails应用程序并尝试bundle install时，它在pg安装中失败.

When I go to the Rails app and try bundle install it fails at pg installation.

推荐答案

从 http://www.enterprisedb.com/products-services-training/pgdownload#osx

，然后使您的路径看起来像这样:

and then make your path look something like this:

PATH=$PATH:/Library/PostgreSQL/9.0/bin/ gem install pg

可以！

注意:请在路径中正确指定您的postgreSQL安装版本.

Note: Please specify your postgreSQL installed version correctly in the path.

在带有Homebrew的OS X上:

1. 使用以下命令安装postgresql:

1. Install postgresql using:

brew install postgresql

然后使用以下命令安装gem:

Then install the gem using:

gem install pg -- --with-pg-config=/usr/local/bin/pg_config

在具有MacPorts的OS X上:

gem install pg -- --with-pg-config=/opt/local/lib/postgresql84/bin/pg_config

希望这会有所帮助！

这篇关于无法在Mountain Lion上安装pg gem的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！