导轨 gem 安装 pg答案

【问题标题】：rails gem install pg导轨 gem 安装 pg
【发布时间】：2012-11-18 22:41:04
【问题描述】：

我想将 gem pg 安装到我的 windows 7 机器上：

gem install pg

但每次都失败并出现以下错误：

Fetching: pg-0.14.1-x86-mingw32.gem (100%)
Successfully installed pg-0.14.1-x86-mingw32
1 gem installed
Installing ri documentation for pg-0.14.1-x86-mingw32...
Enclosing class/module 'rb_mPG' for class Connection not known
Enclosing class/module "rb_cPGconn" for alias close finish not known
Enclosing class/module "rb_cPGconn" for alias query exec not known
Enclosing class/module "rb_cPGconn" for alias escape escape_string not known
Enclosing class/module "rb_cPGconn" for alias nonblocking? isnonblocking not kno
wn
Enclosing class/module "rb_cPGconn" for alias client_encoding= set_client_encodi
ng not known
Enclosing class/module "rb_cPGconn" for alias notifies_wait wait_for_notify not
known
Enclosing class/module "rb_cPGconn" for alias async_query async_exec not known
Enclosing class/module "rb_cPGconn" for alias locreat lo_creat not known
Enclosing class/module "rb_cPGconn" for alias locreate lo_create not known
Enclosing class/module "rb_cPGconn" for alias loimport lo_import not known
Enclosing class/module "rb_cPGconn" for alias loexport lo_export not known
Enclosing class/module "rb_cPGconn" for alias loopen lo_open not known
Enclosing class/module "rb_cPGconn" for alias lowrite lo_write not known
Enclosing class/module "rb_cPGconn" for alias loread lo_read not known
Enclosing class/module "rb_cPGconn" for alias lolseek lo_lseek not known
Enclosing class/module "rb_cPGconn" for alias lo_seek lo_lseek not known
Enclosing class/module "rb_cPGconn" for alias loseek lo_lseek not known
Enclosing class/module "rb_cPGconn" for alias lotell lo_tell not known
Enclosing class/module "rb_cPGconn" for alias lotruncate lo_truncate not known
Enclosing class/module "rb_cPGconn" for alias loclose lo_close not known
Enclosing class/module "rb_cPGconn" for alias lounlink lo_unlink not known
Installing RDoc documentation for pg-0.14.1-x86-mingw32...
Enclosing class/module 'rb_mPG' for class Connection not known
Enclosing class/module "rb_cPGconn" for alias close finish not known
Enclosing class/module "rb_cPGconn" for alias query exec not known
Enclosing class/module "rb_cPGconn" for alias escape escape_string not known
Enclosing class/module "rb_cPGconn" for alias nonblocking? isnonblocking not kno
wn
Enclosing class/module "rb_cPGconn" for alias client_encoding= set_client_encodi
ng not known
Enclosing class/module "rb_cPGconn" for alias notifies_wait wait_for_notify not
known
Enclosing class/module "rb_cPGconn" for alias async_query async_exec not known
Enclosing class/module "rb_cPGconn" for alias locreat lo_creat not known
Enclosing class/module "rb_cPGconn" for alias locreate lo_create not known
Enclosing class/module "rb_cPGconn" for alias loimport lo_import not known
Enclosing class/module "rb_cPGconn" for alias loexport lo_export not known
Enclosing class/module "rb_cPGconn" for alias loopen lo_open not known
Enclosing class/module "rb_cPGconn" for alias lowrite lo_write not known
Enclosing class/module "rb_cPGconn" for alias loread lo_read not known
Enclosing class/module "rb_cPGconn" for alias lolseek lo_lseek not known
Enclosing class/module "rb_cPGconn" for alias lo_seek lo_lseek not known
Enclosing class/module "rb_cPGconn" for alias loseek lo_lseek not known
Enclosing class/module "rb_cPGconn" for alias lotell lo_tell not known
Enclosing class/module "rb_cPGconn" for alias lotruncate lo_truncate not known
Enclosing class/module "rb_cPGconn" for alias loclose lo_close not known
Enclosing class/module "rb_cPGconn" for alias lounlink lo_unlink not known

【问题讨论】：

标签： ruby-on-rails ruby-on-rails-3 postgresql postgis

【解决方案1】：

安装文档失败。该文档容易出错，您可能永远也不会阅读它。安装需要时间和空间，但失败会留下可用的 gem，所以你在这里没问题。

试试这个跳过文档安装：

gem install --no-rdoc --no-ri pg

对其他 gem 安装使用相同的模式。

【讨论】：

第一次 DRTFM 是修复。

【解决方案2】：

在我看来，gem 已实际安装。是后来的文件导致它爆炸。如果你做'gem list'，你能看到它正在安装吗？如果是这样，您应该可以正常使用它...

上面写着：

Successfully installed pg-0.14.1-x86-mingw32
1 gem installed

【讨论】：