gem 安装心理错误

Question

我正在尝试捆绑安装一个 Rails 项目，但我陷入困境......当我尝试运行时，gem install psych我得到的是：

Building native extensions.  This could take a while...
ERROR:  Error installing psych:
        ERROR: Failed to build gem native extension.

        /Users/gibatronic/.rvm/rubies/ruby-1.9.3-p327/bin/ruby extconf.rb
checking for yaml.h... no
yaml.h is missing. Try 'port install libyaml +universal' or 'yum install libyaml-devel'
*** 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=/Users/gibatronic/.rvm/rubies/ruby-1.9.3-p327/bin/ruby
    --with-libyaml-dir
    --without-libyaml-dir
    --with-libyaml-include
    --without-libyaml-include=${libyaml-dir}/include
    --with-libyaml-lib
    --without-libyaml-lib=${libyaml-dir}/lib


Gem files will remain installed in /Users/gibatronic/.rvm/gems/ruby-1.9.3-p327/gems/psych-1.3.4 for inspection.
Results logged to /Users/gibatronic/.rvm/gems/ruby-1.9.3-p327/gems/psych-1.3.4/ext/psych/gem_make.out

我ruby 1.9.3p327正在rails 3.2.12运行OS X 10.8.2

我已经安装libyaml 0.1.4了rvm pkg install libyaml

我真的不知道该怎么办了！

Answer 1

apt-get install libyaml-dev

在我的基于 Debian 7 的系统下运行的情况下进行了修复（对于 Ubuntu 可能也是如此）

Answer 2

苹果系统：

brew install libyaml

它修复了我gem update在尝试解析 YAML 步骤时出现的错误。

Answer 3

这对我有用：

sudo apt-get install libyaml-dev

但我不知道为什么？可以解释一下这个命令的作用吗？

Answer 4

安装libyaml

port install libyaml +universal