如何在雪豹上安装gem pg

本文介绍了如何在雪豹上安装gem pg的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我需要在雪豹上安装gem pg，因为我正在Rails代码库上运行rake.我不使用postgres.

I need to install gem pg on snow leopard because I am running rake on rails codebase. I am not using postgres.

这是我遇到的错误.

$ sudo gem install pg Password: Sorry, try again. Password: Building native extensions. This could take a while... ERROR: Error installing pg: ERROR: Failed to build gem native extension.

查看了Google搜索中的各种博客，但没有一个起作用.

looked at various blogs from google search but none of them work.

推荐答案

您可能必须指定您的CPU体系结构.首先，运行以下命令查看您正在运行的体系结构:

You may have to specify your CPU architecture. First, run the following to see which architecture you're running on:

(注意:将"/usr/bin/ruby​​"替换为哪个红宝石"返回).

(Note: Replace '/usr/bin/ruby' with whatever 'which ruby' returns).

$ lipo -detailed_info /usr/bin/ruby

在那里，您应该会看到有关体系结构的内容(查找"i386"或"x86_64")

In there, you should see something about your architecture (look for 'i386' or 'x86_64')

如果这不起作用，请尝试以下操作:

If that doesn't work, try the following:

$ irb ['foo'].pack('p').size

如果Ruby以64位运行，则结果为'8'，如果以32位运行，则结果为'4'.

The result will be '8' if Ruby is running as 64-bit, or '4' if it's running in 32-bit.

然后，当您要安装Postgres gem时，请指定适当的体系结构:

Then, when you go to install the Postgres gem, specify the appropriate architecture:

$ sudo env ARCHFLAGS="-arch i386" gem install pg

或者，

$ sudo env ARCHFLAGS="-arch x86_64" gem install pg

如果您使用64位CPU运行Snow Leopard，则可能正在运行64位版本. 但是仍然请务必仔细检查您的体系结构，否则可能无法正常工作. ;)

If you're running Snow Leopard with a 64-bit CPU, then you're probably running the 64-bit version. But still be sure to double-check your architecture, otherwise it probably won't work. ;)