请安装 libyaml 并重新安装您的 ruby

问题描述

libyaml 警告不会消失，即使您安装了 libyaml

libyaml warning doesn't go away, even if you install libyaml

gem install bundler
/home/ec2-user/.rvm/rubies/ruby-1.9.3-p392/lib/ruby/1.9.1/yaml.rb:56:in `<top  (required)>':
It seems your ruby installation is missing psych (for YAML output).
To eliminate this warning, please install libyaml and reinstall your ruby.
Fetching: bundler-1.3.4.gem (100%)
Successfully installed bundler-1.3.4

推荐答案

首先删除任何以前的 yaml 文档

First remove any previous docs of yaml by

cd .rvm/src
sudo rm -rf yaml*

然后你可以通过 -

rvm pkg install libyaml

P.S 之后你需要重新安装 ruby​​.

P.S You will need to reinstall ruby after this.

更新: 如果 rvm pkg 似乎已被弃用.您可以自行编译源代码.所有的你必须从 http://pyyaml.org/download/libyaml/ 下载最新版本的 libyaml

---

UPDATE: If rvm pkg seems to be deprecated. You can compile a source on your own. All yougotta do is download the latest version of libyaml from http://pyyaml.org/download/libyaml/

tar zxf yaml-0.1.4.tar.gz
cd yaml-0.1.4
./configure
make
make install

UPDATE2: 顺便说一句，您仍然可以使用 rvm pkg 和/或在重新安装 ruby​​ 时确保通过以下方式启用自动库\curl -L https://get.rvm.io |bash -s stable --rails --autolibs=enable

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UPDATE2: BTW, you could still use rvm pkg and/or when reinstalling ruby make sure to enbale autolibs by\curl -L https://get.rvm.io | bash -s stable --rails --autolibs=enable

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