blocks|key|675241|text|在我的情况下|type|unstyled|depth|inlineStyleRanges|entityRanges|data|675242|rvm+pkg+install+libyaml|code-block|syntax|javascript|675243|和|675244|rvm+reinstall+ruby-1.9.3-p125|675245|解决了这个问题。|675246|对于使用Ubuntu的用户，请确保在执行上述步骤之前已经安装了libtool：|offset|length|style|CODE|675247|sudo+apt-get+install+libtool|675248|对于macOS用户(使用自制软件)：|675249|rm+-rf+/usr/local/lib/ruby/gems/+&&+brew+reinstall+ruby|675250|entityMap^0|0|0|0|0|0|V|7|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|14|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|15|8|@$O|16|P|17|Q|R]]|9|@]|A|$]]|$1|S|3|T|5|D|7|18|8|@]|9|@]|A|$E|F]]|$1|U|3|V|5|6|7|19|8|@]|9|@]|A|$]]|$1|W|3|X|5|D|7|1A|8|@]|9|@]|A|$E|F]]|$1|Y|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|Z|$]]

In my case

<pre><code>rvm pkg install libyaml
</code></pre>

and 

<pre><code>rvm reinstall ruby-1.9.3-p125
</code></pre>

solved the problem.

For people using Ubuntu, make sure that <code>libtool</code> is installed prior to the steps above:

<pre><code>sudo apt-get install libtool
</code></pre>

For macOS users (with homebrew):

<pre><code>rm -rf /usr/local/lib/ruby/gems/ &amp;&amp; brew reinstall ruby
</code></pre>

blocks|key|675274|text|适用于ubuntu和rvm|type|unstyled|depth|inlineStyleRanges|entityRanges|data|675275|sudo+apt-get+install+libtool
rvm+pkg+install+libyaml
rvm+reinstall+1.9.3|code-block|syntax|javascript|675276|成功了|675277|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

for ubuntu and rvm

<pre><code>sudo apt-get install libtool
rvm pkg install libyaml
rvm reinstall 1.9.3
</code></pre>

worked

blocks|key|4923883|text|brew+install+libyaml
rvm+reinstall+1.9.3|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4923884|这对我很有效(在雪豹上)。|unstyled|4923885|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>brew install libyaml
rvm reinstall 1.9.3
</code></pre>

Is what worked for me (on Snow Leopard).

blocks|key|4924057|text|如果不使用rvm，而是从头开始构建和安装ruby1.9.3-例如，使用rbenv管理ruby版本-您必须首先安装libyaml。从http://pyyaml.org/获取它；目前，您需要的文件是http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz。打开tarball和cd进入生成的文件夹。然后：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4924058|./configure+--prefix=/usr/local
make
sudo+make+install|code-block|syntax|javascript|4924059|现在就可以构建ruby了。从http://ftp.ruby-lang.org/pub/ruby/下载ruby。打开tarball和cd进入生成的文件夹。现在：|4924060|./configure+--prefix=/wherever/you/want/it/to/go
make
make+install|4924061|(也可能是sudo+make+install，这取决于您将它放在哪里。)如果使用rbenv，如果您切换到rbenv+global+1.9.3-p194+(或您的版本被称为什么)并且gem+--version在没有任何警告的情况下工作，您就会知道它已经工作了。这对我在Mac+10.6.8上很有效。(更新：我刚刚在MacOSX10.8.1上尝试了一下，它在那里似乎也运行得很好。)|style|CODE|BOLD|4924062|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/sstephenson/rbenv|1|http://pyyaml.org/|2|http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz|3|http://ftp.ruby-lang.org/pub/ruby/^0|Z|5|0|1T|I|1|2P|1G|2|0|0|E|Y|3|0|0|5|H|1G|N|2I|D|45|2|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@$A|16|B|17|1|18]|$A|19|B|1A|1|1B]|$A|1C|B|1D|1|1E]]|C|$]]|$1|D|3|E|5|F|7|1F|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|1G|8|@]|9|@$A|1H|B|1I|1|1J]]|C|$]]|$1|K|3|L|5|F|7|1K|8|@]|9|@]|C|$G|H]]|$1|M|3|N|5|6|7|1L|8|@$A|1M|B|1N|O|P]|$A|1O|B|1P|O|P]|$A|1Q|B|1R|O|P]|$A|1S|B|1T|O|Q]]|9|@]|C|$]]|$1|R|3|-4|5|6|7|1U|8|@]|9|@]|C|$]]]|S|$T|$5|U|V|W|C|$X|Y]]|Z|$5|U|V|W|C|$X|10]]|11|$5|U|V|W|C|$X|12]]|13|$5|U|V|W|C|$X|14]]]]

If not using rvm, but rather you are building and installing ruby 1.9.3 from scratch — for example, you're managing your ruby versions with <a href="https://github.com/sstephenson/rbenv">rbenv</a> — you must install libyaml first. Get it from <a href="http://pyyaml.org/">http://pyyaml.org/</a>; at the moment, the file you want is <a href="http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz">http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz</a>. Open the tarball and cd into the resulting folder. Then:

<pre><code>./configure --prefix=/usr/local
make
sudo make install
</code></pre>

You are now ready to build ruby. Download ruby from <a href="http://ftp.ruby-lang.org/pub/ruby/">http://ftp.ruby-lang.org/pub/ruby/</a>. Open the tarball and cd into the resulting folder. Now:

<pre><code>./configure --prefix=/wherever/you/want/it/to/go
make
make install
</code></pre>

(Or possibly <code>sudo make install</code>, depending on where you're putting it.) If using rbenv, you'll know it has worked if you switch to <code>rbenv global 1.9.3-p194</code> (or whatever your version is called) and <code>gem --version</code> works without a warning. That worked for me on Mac OS X 10.6.8. (Update: I just tried this on Mac OS X 10.8.1 and it seems to have worked fine there too.)

blocks|key|1696210|text|在我的例子中，解决方案是将psych+gem添加到Gemfile中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1696211|entityMap^0|D|5|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

In my case the solution was to add the <code>psych</code> gem to the Gemfile.

blocks|key|4923813|text|我遇到了这个问题。libyaml不会编译。结果发现我错过了libtool。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4923814|yum+install+libtool
yum+install+libyaml+(or+rvm+pkg+install+libyaml)
rvm+reinstall+1.9.3|code-block|syntax|javascript|4923815|这解决了我的问题。|4923816|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I had this problem. libyaml wouldn't compile. It turns out I was missing libtool.

<pre><code>yum install libtool
yum install libyaml (or rvm pkg install libyaml)
rvm reinstall 1.9.3
</code></pre>

That solved my problem.

blocks|key|4924797|text|如果你已经用自制软件在macOS上安装了ruby，try+this+solution。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4924798|rm+-rf+/usr/local/lib/ruby/gems/+&&+brew+reinstall+ruby|style|CODE|4924799|请注意，这将删除所有已安装的get。最好在运行此命令之前，将已安装的gem列表与gem+list一起保存。|4924800|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/Homebrew/homebrew-core/issues/11636#issuecomment-290892884^0|P|H|0|0|0|1J|0|14|8|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@$A|W|B|X|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|Y|8|@$A|Z|B|10|F|G]]|9|@]|C|$]]|$1|J|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]]]

If you have installed ruby on macOS with homebrew, <a href="https://github.com/Homebrew/homebrew-core/issues/11636#issuecomment-290892884" rel="noreferrer">try this solution</a>.

<code>rm -rf /usr/local/lib/ruby/gems/ &amp;&amp; brew reinstall ruby</code>

Note that this will get rid of all installed gems. Best save a list of installed gems with <code>gem list</code> before you run this.

blocks|key|887285|text|$+brew+doctor
$+brew+link+libyaml|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|887286|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>$ brew doctor
$ brew link libyaml
</code></pre>

blocks|key|1691050|text|我终于把它修好了。问题是，尽管我在brew中安装了libyaml，但它从未链接过。我必须删除一个冲突的头文件，然后删除brew+link+libyaml。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1691051|entityMap^0|1N|H|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

I got this fixed finally. The issue was that even though I installed libyaml with brew, it was never linked. I had to remove a conflicting header file and then <code>brew link libyaml</code>.

blocks|key|887470|text|使用rvm+for+mac+osx安装ruby，使用autolibs安装libyaml，首先卸载libyaml会有所帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|887471|这对我很有效：|887472|brew+uninstall+libyaml
rvm+autolibs+enable
rvm+reinstall+ruby-2.1.1|code-block|syntax|javascript|887473|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Installing ruby with rvm for mac osx, use autolibs to install libyaml and first uninstalling libyaml helps. 

This worked for me:

<pre><code>brew uninstall libyaml
rvm autolibs enable
rvm reinstall ruby-2.1.1
</code></pre>

blocks|key|675060|text|我遇到了同样的问题(Lion+10.7.4)，并通过升级rvm然后重新安装ruby来修复它|type|unstyled|depth|inlineStyleRanges|entityRanges|data|675061|1)升级rvm+https://rvm.io//rvm/install/|offset|length|675062|curl+-L+https://get.rvm.io+%7C+bash+-s+stable+--ruby|code-block|syntax|javascript|675063|2)然后使用rvm重新安装ruby+1.9.3+(之前随rvm的早期版本一起安装)|675064|rvm+reinstall+1.9.3|675065|entityMap|0|LINK|mutability|MUTABLE|url|https://rvm.io//rvm/install/^0|0|8|S|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@$D|Y|E|Z|1|10]]|A|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|13|8|@]|9|@]|A|$I|J]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

I had the same problem (Lion 10.7.4), and fixed it by upgrading rvm then reinstalling ruby

1) upgrade rvm <a href="https://rvm.io//rvm/install/" rel="nofollow">https://rvm.io//rvm/install/</a>

<pre><code>curl -L https://get.rvm.io | bash -s stable --ruby
</code></pre>

2) Then use rvm to reinstall ruby 1.9.3 (which had been previously installed with the earlier version of rvm)

<pre><code>rvm reinstall 1.9.3
</code></pre>

blocks|key|675416|text|我重新安装了带有libyaml支持的ruby+1.9.3：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|675417|rvm+reinstall+1.9.3+--with-libyaml|code-block|syntax|javascript|675418|在安装心理之前，我确保我会使用1.9.3：|675419|rvm+use+1.9.3|675420|我安装了心理：|675421|gem+install+psych|675422|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I reinstalled ruby 1.9.3 with libyaml support:

<pre><code>rvm reinstall 1.9.3 --with-libyaml
</code></pre>

I made sure that I would use 1.9.3 before installing psych:

<pre><code>rvm use 1.9.3
</code></pre>

I installed psych:

<pre><code>gem install psych
</code></pre>

blocks|key|1696060|text|sudo+port+install+libyaml+#+or+brew+install+libyaml
rvm+get+latest
rvm+pkg+install+iconv
rvm+pkg+install+openssl
rvm+reinstall+1.9.3+--with-openssl-dir=~/.rvm/usr+--with-iconv-dir=~/.rvm/usr

curl+-OL+http://rubyforge.org/frs/download.php/75414/linecache19-0.5.13.gem
curl+-OL+http://rubyforge.org/frs/download.php/75415/ruby-debug-base19-0.11.26.gem

gem+install+linecache19-0.5.13.gem+ruby-debug-base19-0.11.26.gem+--+--with-ruby-include=$rvm_path/src/ruby-1.9.3-p125/
gem+install+ruby-debug19

rvm+reload|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1696061|重新加载.rvmrc+(cd+out、cd+in)|unstyled|1696062|bundle|1696063|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>sudo port install libyaml # or brew install libyaml
rvm get latest
rvm pkg install iconv
rvm pkg install openssl
rvm reinstall 1.9.3 --with-openssl-dir=~/.rvm/usr --with-iconv-dir=~/.rvm/usr

curl -OL http://rubyforge.org/frs/download.php/75414/linecache19-0.5.13.gem
curl -OL http://rubyforge.org/frs/download.php/75415/ruby-debug-base19-0.11.26.gem

gem install linecache19-0.5.13.gem ruby-debug-base19-0.11.26.gem -- --with-ruby-include=$rvm_path/src/ruby-1.9.3-p125/
gem install ruby-debug19

rvm reload
</code></pre>

reload your .rvmrc (cd out, cd in)

<pre><code>bundle
</code></pre>

blocks|key|1690779|text|这些答案对我来说都不起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1690780|我在https://github.com/sstephenson/ruby-build/issues/119上找到了我的答案，我在CentOS6.3虚拟机上。|offset|length|1690781|在安装ruby之前，必须先安装libyaml。如果你已经安装了ruby，你必须在重新编译源代码之前清除这些文件！|1690782|#+cd+to+your+ruby+source+location
rm+-rf+/usr/local/lib/ruby+#+clean+out+ruby+files
./configure
make+&&+make+install
gem+-v+#+check+if+error+is+fixed|code-block|syntax|javascript|1690783|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/sstephenson/ruby-build/issues/119^0|0|2|1G|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

None of these answers worked for me.

I found my answer on <a href="https://github.com/sstephenson/ruby-build/issues/119" rel="nofollow">https://github.com/sstephenson/ruby-build/issues/119</a>
I am on Centos 6.3 Virtual Machine.

YOU MUST install libyaml before you install ruby. IF you ALREADY installed ruby you must get rid of the files before compiling source again!!!

<pre><code># cd to your ruby source location
rm -rf /usr/local/lib/ruby # clean out ruby files
./configure
make &amp;&amp; make install
gem -v # check if error is fixed
</code></pre>

blocks|key|886987|text|我从源代码中单独构建了libyaml文件，并将它们安装在/usr/local/lib中。RVM创建的ruby仍然看不到它们，而不是弄乱makefile或我刚才复制的/usr/local/lib/libyaml*到~/.rvm/rubies/ruby-1.9.3-p327/+LD_LIBRARY_PATH+/|type|unstyled|depth|inlineStyleRanges|entityRanges|data|886988|这就平息了警告。|886989|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I built the libyaml files separately from source and installed them in /usr/local/lib. The ruby that RVM created still did not see them, and rather than muck with the makefile or the system LD_LIBRARY_PATH I just copied /usr/local/lib/libyaml* to ~/.rvm/rubies/ruby-1.9.3-p327/lib/

That quieted the warning.

blocks|key|675294|text|这就是我在Ubuntu上的工作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|675295|安装libyaml-dev+(sudo+apt-|675296|+install+libyaml-dev)|unordered-list-item|675297|installing+rvm+%2B+ruby+1.9.3|675298|675299|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|O|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

This is what worked for me on Ubuntu: 
- installing libyaml-dev (sudo apt-get install libyaml-dev) 
- installing rvm + ruby 1.9.3

blocks|key|1696445|text|我尝试了所有这些答案，但仍然不能让它工作。我在homebrew中安装了libyaml，然后在rvm中安装了Ruby+1.9.3和2.0.0。每次它都抱怨我错过了心理学(libyaml)。但是尝试安装libyaml时告诉我它已经安装了。冲洗，重复。呃。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1696446|最后，我所做的是卸载libyaml。然后是I，它(至少在OSX中)允许enabled+autolibs+in+rvm更直接地安装和管理依赖项。现在，当我安装Rubies时，rvm能够安装libyaml并识别它在正确的位置。|offset|length|1696447|因此，如果您已经尝试了所有其他选项，请尝试实际删除libyaml，然后安装您的Rubies。从错误消息看，这是很直观的，但这最终对我起作用了。|1696448|entityMap|0|LINK|mutability|MUTABLE|url|https://rvm.io/rvm/autolibs/^0|0|Z|N|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

I tried all of these answers and still wasn't able to get it working. I installed libyaml with homebrew and then installed Ruby 1.9.3 and 2.0.0 with rvm. Each time it complained that I was missing psych (libyaml). But trying to install libyaml told me it was already installed. Rinse, repeat. Urgh.

Finally, what I did was to uninstall libyaml. Then I <a href="https://rvm.io/rvm/autolibs/" rel="nofollow">enabled autolibs in rvm</a>, which (at least in OSX) allows rvm to install and manage dependencies more directly. Now when I installed the Rubies, rvm was able to install libyaml and recognize that it was in the right spot.

So if you've tried all of the other options, try actually removing libyaml and then installing your Rubies. It's count-intuitive from the error messages, but that's what finally worked for me.

blocks|key|675409|text|我也有同样的问题(Cent+OS+5.7)，上面的解决方案对我都不起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|675410|//+My+console+warning
/usr/local/rvm/rubies/ruby-1.9.3-p286/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.|code-block|syntax|javascript|675411|在做了几次重新安装后，我意识到它是在ruby版本的1.9.1中寻找yaml，而不是1.9.3。所以我降级了|offset|length|style|CODE|675412|//+obviously+after+installing+`libyaml`
rvm+remove+all
rvm+install+1.9.1
rvm+use+1.9.1+--default|675413|它工作了8D！|675414|entityMap^0|0|0|P|5|15|5|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@$I|V|J|W|K|L]|$I|X|J|Y|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

I had the same problem (Cent OS 5.7), none of the above solutions worked to me.

<pre><code>// My console warning
/usr/local/rvm/rubies/ruby-1.9.3-p286/lib/ruby/1.9.1/yaml.rb:56:in `&lt;top (required)&gt;':
It seems your ruby installation is missing psych (for YAML output).
To eliminate this warning, please install libyaml and reinstall your ruby.
</code></pre>

After doing several re-installs, I realized it's looking for yaml in ruby version of <code>1.9.1</code> instead of <code>1.9.3</code>. So i downgraded

<pre><code>// obviously after installing `libyaml`
rvm remove all
rvm install 1.9.1
rvm use 1.9.1 --default
</code></pre>

And it worked 8D!

blocks|key|887043|text|在CentOS+6.3上，上述方法都不起作用。然而，在安装之前从源代码安装ruby+解决了这个问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|887044|$+wget+http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz
$+tar+xzvf+yaml-0.1.4.tar.gz
$+cd+yaml-0.1.4
$+./configure+--prefix=/usr/local
$+make
$+sudo+make+install|code-block|syntax|javascript|887045|然后|887046|rvm+install+1.9.3
gem+install+rails|887047|entityMap^0|T|D|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

On CentOS 6.3 none of the above worked. However installing libyaml from source before installing ruby resolved the problem.

<pre><code>$ wget http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz
$ tar xzvf yaml-0.1.4.tar.gz
$ cd yaml-0.1.4
$ ./configure --prefix=/usr/local
$ make
$ sudo make install
</code></pre>

and then

<pre><code>rvm install 1.9.3
gem install rails
</code></pre>

blocks|key|1690925|text|我也为同样的rvm+install+ruby-2.0.0失败而苦苦挣扎了很多很多小时。我尝试了所有不同的方法来安装libyaml：wget+source、yum和rvm。我还尝试了类似主题中列出的所有不同方法。因为我尝试了所有不同的方法，所以我有多个libyaml的安装和位置。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1690926|RVM完全能够在~/.rvm中安装必要的依赖项。只需从非RVM安装中删除libyaml文件即可修复此问题：|1690927|sudo+rm+/usr/local/lib/libyaml*.*

rvm+reinstall+ruby-2.0.0-p0|code-block|syntax|javascript|1690928|成功了！|1690929|entityMap^0|6|M|1T|B|25|3|29|3|0|8|6|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|13|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|P|$]]

I also struggled with the same failures with <code>rvm install ruby-2.0.0</code> for many, MANY hours. I had tried all the different methods to install libyaml; <code>wget source</code>, <code>yum</code> and <code>rvm</code>. I also tried all of the different approaches listed in similar threads. Because I tried all the different methods, I had multiple installations and locations of libyaml.

RVM is perfectly capable of installing the necessary dependencies in <code>~/.rvm</code>. Simply removing the libyaml files from non-RVM install fixed this issue for me:

<pre><code>sudo rm /usr/local/lib/libyaml*.*

rvm reinstall ruby-2.0.0-p0
</code></pre>

Works!

blocks|key|4924663|text|非RVM+ruby安装方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4924664|%25+uname+-a
Linux+localhost.localdomain+2.6.32-358.el6.x86_64+#1+SMP+Fri+Feb+22+00:31:26+UTC+2013++x86_64+x86_64+x86_64+GNU/Linux

%25+cat+/etc/redhat-release
CentOS+release+6.4+(Final)

%25+wget+http://apt.sw.be/redhat/el5/en/x86_64/dag/RPMS/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm
%25+sudo+rpm+-K+rpmforge-release-0.3.6-1.el5.rf.*.rpm"
%25+sudo+rpm+-ivh+rpmforge-release-0.3.6-1.el5.rf.*.rpm"|code-block|syntax|javascript|4924665|通过编辑此文件禁用rpmforge，并设置enabled=0+%25+sudo+vi+/etc/yum.repos.d/rpmforge.repo|4924666|%25+grep+rpmforge+~/.aliases
alias+rpmforge+"sudo+yum+--disablerepo='*'+--enablerepo='rpmforge'"

%25+rpmforge+install+libyaml+libyaml-devel

%25+sudo+yum+list+installed+%7C+grep+libyaml
libyaml.x86_64++++++++++0.1.4-1.el5.rf++@rpmforge+++++++++++++++++++++++++++++++
libyaml-devel.x86_64++++0.1.4-1.el5.rf++@rpmforge++|4924667|libyaml-devel是关键。|4924668|%25+tar+zxvf+ruby-1.9.3-p448.tar.gz
%25+cd+ruby-1.9.3-p448
%25+./configure+-prefix=$HOME/ruby-1.9.3-p448
%25+make+;+make+install
%25+cd+$HOME;+ln+-s+./ruby-1.9.3-p448+ruby|4924669|更新您的路径和源.cshrc|4924670|%25+echo+$PATH
/home/francis/ruby/bin:/usr/sbin:/home/francis/bin:/home/francis/jdk1.7.0_25/bin:/usr/lib64/qt-3.3/bin:/usr/local/bin:/usr/bin:/bin

%25+which+ruby
/home/francis/ruby/bin/ruby

%25+gem+update+--system|4924671|在.cshrc和源代码中设置你的GEM_HOME|4924672|%25+echo+$GEM_HOME
%25+/home/francis/ruby/lib/ruby/gems

%25+gem+install+mysql2+pg+ruby-debug-ide+rails+capistrano+capistrano-ext+passenger|4924673|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|D|7|17|8|@]|9|@]|A|$E|F]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

NON-RVM ruby install method.

<pre><code>% uname -a
Linux localhost.localdomain 2.6.32-358.el6.x86_64 #1 SMP Fri Feb 22 00:31:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

% cat /etc/redhat-release
CentOS release 6.4 (Final)

% wget http://apt.sw.be/redhat/el5/en/x86_64/dag/RPMS/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm
% sudo rpm -K rpmforge-release-0.3.6-1.el5.rf.*.rpm"
% sudo rpm -ivh rpmforge-release-0.3.6-1.el5.rf.*.rpm"
</code></pre>

DISABLE rpmforge by editing this file and set enabled=0
 % sudo vi /etc/yum.repos.d/rpmforge.repo

<pre><code>% grep rpmforge ~/.aliases
alias rpmforge "sudo yum --disablerepo='*' --enablerepo='rpmforge'"

% rpmforge install libyaml libyaml-devel

% sudo yum list installed | grep libyaml
libyaml.x86_64 0.1.4-1.el5.rf @rpmforge 
libyaml-devel.x86_64 0.1.4-1.el5.rf @rpmforge 
</code></pre>

The libyaml-devel is the key.

<pre><code>% tar zxvf ruby-1.9.3-p448.tar.gz
% cd ruby-1.9.3-p448
% ./configure -prefix=$HOME/ruby-1.9.3-p448
% make ; make install
% cd $HOME; ln -s ./ruby-1.9.3-p448 ruby
</code></pre>

Update your path and source .cshrc

<pre><code>% echo $PATH
/home/francis/ruby/bin:/usr/sbin:/home/francis/bin:/home/francis/jdk1.7.0_25/bin:/usr/lib64/qt-3.3/bin:/usr/local/bin:/usr/bin:/bin

% which ruby
/home/francis/ruby/bin/ruby

% gem update --system
</code></pre>

Set your GEM_HOME in .cshrc and source

<pre><code>% echo $GEM_HOME
% /home/francis/ruby/lib/ruby/gems

% gem install mysql2 pg ruby-debug-ide rails capistrano capistrano-ext passenger
</code></pre>

blocks|key|1691078|text|如果您正在从源代码构建ruby+(我在Fedora+20上构建了1.9.3+)，那么在执行构建ruby的configure/make之前，您将需要这个代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1691079|yum+install+libyaml-devel|code-block|syntax|javascript|1691080|(除了yum之外，还要安装libyaml。)与上面使用rpmforge的Francis的答案类似。|1691081|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

If you are building ruby from source (I built 1.9.3 on Fedora 20), you will need this before you do the configure/make to build ruby:

<pre><code>yum install libyaml-devel
</code></pre>

(in addition to yum install libyaml.) Similar to Francis's answer using rpmforge above.

blocks|key|675524|text|我遇到了这个错误，并注意到我在HomeBrew中安装了不同版本的Ruby，以及许多我不再使用的gem。所以像这样做了一个全面的清理：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|675525|$+brew+remove+--force+ruby+#+remove+all+versions+installed
$+sudo+rm+-rf+/usr/local/lib/ruby+#+remove+all+gems+and+leftover+files
$+brew+install+ruby
$+gem+install+bundler
$+bundle+install|code-block|syntax|javascript|675526|如果您不使用Gemfile，请确保您知道要重新安装哪些gem。|offset|length|style|CODE|675527|entityMap^0|0|0|6|7|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I was having this error and noticed I had different versions of Ruby installed with HomeBrew, along with many gems that I no longer used. So did a full clean up like this:

<pre><code>$ brew remove --force ruby # remove all versions installed
$ sudo rm -rf /usr/local/lib/ruby # remove all gems and leftover files
$ brew install ruby
$ gem install bundler
$ bundle install
</code></pre>

If you don't use a <code>Gemfile</code>, make sure you know which gems to reinstall.

blocks|key|675532|text|在我的例子中，all+I+needed+to+do是|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|675533|rm+-rf+/usr/local/lib/ruby/gems/2.4.0/gems/psych-2.2.4
rm+-rf+/usr/local/lib/ruby/gems/2.4.0/extensions/x86_64-darwin-16/2.4.0/psych-2.2.4|code-block|syntax|javascript|675534|现在，FWIW、gem+list包括|style|CODE|675535|psych+(2.2.4,+default:+2.2.2)|675536|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/Homebrew/homebrew-core/issues/11636#issuecomment-289433135^0|7|I|0|0|0|8|8|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|11|8|@$A|12|B|13|K|L]]|9|@]|C|$]]|$1|M|3|N|5|F|7|14|8|@]|9|@]|C|$G|H]]|$1|O|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

In my case <a href="https://github.com/Homebrew/homebrew-core/issues/11636#issuecomment-289433135" rel="nofollow noreferrer">all I needed to do</a> was

<pre><code>rm -rf /usr/local/lib/ruby/gems/2.4.0/gems/psych-2.2.4
rm -rf /usr/local/lib/ruby/gems/2.4.0/extensions/x86_64-darwin-16/2.4.0/psych-2.2.4
</code></pre>

Now, FWIW, <code>gem list</code> includes

<pre><code>psych (2.2.4, default: 2.2.2)
</code></pre>

blocks|key|4924907|text|ruby+RVM|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4924908|原因:+ruby+2.4.4和ruby+2.5.1|unordered-list-item|4924909|
之间的|4924910|Ubuntu|4924911|Using+gem版本冲突|4924912|4924913|我花了几个小时试图让我的错误消失，但这里的回复都不适合我的情况，所以我想我应该发布我是如何解决它的……|4924914|在我的例子中，当我运行gem+list+%7C+grep+psych时，我有以下输出：psych(default:+3.1.0,+default:+3.0.2)。|offset|length|style|CODE|4924915|显然，从2.5.0版本开始，ruby就依赖于较新版本的messing+(3.1.0)，将这两个版本都设置为默认值是把一切都搞砸了。请注意，我从来没有弄清楚为什么这两个都被设置为默认版本-由于这个原因，我从我的计算机上完全清除了rvm和ruby版本。|4924916|因此，为了将旧版本(3.0.2)设置为默认版本，请转到~/.rvm/gems/ruby-x.x.x@global/specifications/default。如果你运行ls+%7C+grep+psych，它会在这里返回两个版本的gem。如果你想保持3.1.0作为默认版本，只需运行mv+psych-3.0.2.gemspec+../，然后尝试运行gemlist，以确保它现在只列出一个版本作为默认版本...|4924917|tl;dr+cd+/.rvm/gems/ruby-x.x.x@global/specifications/default+mv+psych-3.0.2+../|4924918|希望这对某些人有帮助！|4924919|entityMap^0|0|0|0|0|0|0|0|B|L|15|11|0|0|R|1G|2D|F|3V|Q|4S|7|0|6|1I|1P|I|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|14|8|@]|9|@]|A|$]]|$1|E|3|F|5|6|7|15|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|16|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|17|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|18|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|19|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1A|8|@$P|1B|Q|1C|R|S]|$P|1D|Q|1E|R|S]]|9|@]|A|$]]|$1|T|3|U|5|6|7|1F|8|@]|9|@]|A|$]]|$1|V|3|W|5|6|7|1G|8|@$P|1H|Q|1I|R|S]|$P|1J|Q|1K|R|S]|$P|1L|Q|1M|R|S]|$P|1N|Q|1O|R|S]]|9|@]|A|$]]|$1|X|3|Y|5|6|7|1P|8|@$P|1Q|Q|1R|R|S]|$P|1S|Q|1T|R|S]]|9|@]|A|$]]|$1|Z|3|10|5|6|7|1U|8|@]|9|@]|A|$]]|$1|11|3|-4|5|6|7|1V|8|@]|9|@]|A|$]]]|12|$]]

<ul>
<li>Ubuntu</li>
<li>Using RVM</li>
<li>Reason: Conflicting Psych gem versions between ruby 2.4.4 and ruby 2.5.1</li>
</ul>

I spent a few hours trying to get my error to go away and none of the replies here suited my case, so I thought I would post how I solved it...

In my case when I ran <code>gem list | grep psych</code>, I had the following output: <code>psych(default: 3.1.0, default: 3.0.2)</code>.

Apparently since version 2.5.0, ruby depends on the newer version of psych (3.1.0) and having both set as default was messing up everything. Notice that I never ended up finding out why those were both set as default - I completely wiped out rvm and ruby versions from my computer due to this.

So in order to remove the older version (3.0.2) from being set as default, head to <code>~/.rvm/gems/ruby-x.x.x@global/specifications/default</code>. If you run <code>ls | grep psych</code> it will return both versions of the gem here. If you want to maintain 3.1.0 as default just run <code>mv psych-3.0.2.gemspec ../</code> and then try running <code>gemlist</code> to make sure it is listing only one version as default now...

tl;dr
<code>cd /.rvm/gems/ruby-x.x.x@global/specifications/default</code>
<code>mv psych-3.0.2 ../</code>

Hope this helps someone!

blocks|key|4923903|text|在雪豹上，凯萨兹的解决方案对我不起作用。然而，这个解决方案做到了：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4923904|brew+install+libyaml
rvm+get+head
rvm+reinstall+1.9.3++--with-gcc=clang|code-block|syntax|javascript|4923905|(+rvm重装给了我一个关于clang没有"--with-libyaml“选项的警告，但它还是解决了错误消息。)|4923906|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

On Snow Leopard, the solution by Catharz did not work for me. This solution, however, did:

<pre><code>brew install libyaml
rvm get head
rvm reinstall 1.9.3 --with-gcc=clang
</code></pre>

(The rvm reinstall gave me a warning about clang not having the option "--with-libyaml" but it solved the error message regardless.)

blocks|key|886775|text|这对我来说至少在Ubuntu+10.04上是有效的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|886776|$+sudo+apt-get+install+libtool|886777|$+rvm重新安装1.9.3|886778|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

This worked for me at least on Ubuntu 10.04

$ sudo apt-get install libtool

$ rvm reinstall 1.9.3

blocks|key|886947|text|在Solaris上：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|886948|#+sudo+crle+-64+-l+/usr/local/lib|code-block|syntax|javascript|886949|将/usr/local/lib添加到共享库搜索路径(请参见man+crle)|offset|length|style|CODE|886950|entityMap^0|0|0|1|E|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

On Solaris:

<pre><code># sudo crle -64 -l /usr/local/lib
</code></pre>

to add <code>/usr/local/lib</code> to the shared library search path
(see man crle)

blocks|key|4924282|text|当我在Snow+Leopard+10.6.8上从64位切换到32位时，我重新安装了ruby+(使用rvm)以在32位上运行，并且遇到了同样的问题。所以我只是“清理”rvm之前缓存的所有东西，并解决了问题。希望这篇小贴士能帮助到一些人。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4924283|4924284|+rvm全部清理|blockquote|4924285|4924286|rvm+install+ruby_version_here+//(这样，rvm也会重新下载最新的yaml)。|4924287|4924288|顺便说一句，如果你仍然遇到这个问题，我认为你可以尝试：|4924289|4924290|+gem安装心理|4924291|4924292|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|S|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|T|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|U|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|V|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|W|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|X|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|E|7|Z|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|10|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|Q|$]]

When I switch from 64 bit to 32 bit on Snow Leopard 10.6.8, I had reinstalled ruby (used rvm) to run on 32bit and met the same problem. So I just 'cleanup' all thing that cached by rvm before and problems solved. Hope this tip can help someone.
<blockquote>
rvm cleanup all
rvm install ruby_version_here //(This way, rvm will also re-download newest yaml).
</blockquote>
BTW, if you still meet this problem, I think you can try:
<blockquote>
gem install psych
</blockquote>

blocks|key|1696396|text|适用于使用Mountain+Lion和RVM版本>=+1.18.x的用户|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1696397|RVM附带了这个新工具，它在安装ruby版本时被用作一个标志。它被称为autolibs。|1696398|我通过做以下事情摆脱了这个心理问题：|1696399|rvm+reinstall+ruby-1.9.3-p392+--autolibs=3|offset|length|style|CODE|1696400|在阅读帮助文本之前，请执行以下操作：|1696401|rvm+help+autolibs|1696402|凉爽的。|1696403|entityMap^0|0|0|0|0|16|0|0|0|H|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|V|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|W|8|@$H|X|I|Y|J|K]]|9|@]|A|$]]|$1|L|3|M|5|6|7|Z|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|10|8|@$H|11|I|12|J|K]]|9|@]|A|$]]|$1|P|3|Q|5|6|7|13|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|S|$]]

For those with Mountain Lion and RVM version >= 1.18.x

RVM ships with this new tool that is used as a flag when installing ruby versions. It's called autolibs.

I got rid of this psych problem by doing the following:

<code>rvm reinstall ruby-1.9.3-p392 --autolibs=3</code>

Read the help text BEFORE by doing:

<code>rvm help autolibs</code>

Cool.

blocks|key|887502|text|在OSX升级后，我也遇到了类似的问题，这就解决了我的问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|887503|+++brew+rm+libyaml
+++brew+cleanup+libyaml
+++brew+install+libyaml
+++brew+rm+openssl
+++brew+cleanup+openssl
+++brew+install+openssl
+++rvm+remove+*your+version*
+++rvm+install+*latest+version*|code-block|syntax|javascript|887504|found+here|offset|length|887505|entityMap|0|LINK|mutability|MUTABLE|url|https://www.bountysource.com/issues/4513843-error-running-gemset_reset_env-ruby-2-1-3^0|0|0|0|A|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

I had similar problem after OSX upgrade, this what solves my problem:

<pre><code> brew rm libyaml
 brew cleanup libyaml
 brew install libyaml
 brew rm openssl
 brew cleanup openssl
 brew install openssl
 rvm remove *your version*
 rvm install *latest version*
</code></pre>

<a href="https://www.bountysource.com/issues/4513843-error-running-gemset_reset_env-ruby-2-1-3" rel="nofollow">found here</a>

blocks|key|4924783|text|rvm+pkg+install+libyaml
$LIBYAML_PATH+will+be+the+path+where+RVM+installs+the+upated+yaml
rvm+get+stable
rvm+reinstall+all+--force+--with-libyaml-dir=$LIBYAML_PATH|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4924784|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>rvm pkg install libyaml
$LIBYAML_PATH will be the path where RVM installs the upated yaml
rvm get stable
rvm reinstall all --force --with-libyaml-dir=$LIBYAML_PATH
</code></pre>

blocks|key|4924971|text|我也一直面临着同样的问题。我正在使用安装了rbenv的MacPorts！|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4924972|我做了什么：|4924973|4924974|sudo+port+install+ruby26|ordered-list-item|4924975|sudo+port+select+--set+ruby+ruby26+(这实际上会使macOS默认的ruby安装退出游戏)|4924976|从~/.gem/ruby/2.6.0/gems中删除了在调用gem命令时导致错误的所有gem+|4924977|对gem列表中列出的所有gem运行gem+pristine命令(确切的命令是gem列表中的一部分|4924978|4924979|entityMap^0|L|5|0|0|0|0|O|0|0|Y|0|1|M|U|3|0|H|C|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|L|3|M|5|K|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|N|3|O|5|K|7|15|8|@$9|16|A|17|B|C]|$9|18|A|19|B|C]]|D|@]|E|$]]|$1|P|3|Q|5|K|7|1A|8|@$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|R|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|T|$]]

I've been facing the same issue. I'm using MacPorts with <code>rbenv</code> installed!
What I did:
<ol>
<li><code>sudo port install ruby26</code></li>
<li><code>sudo port select --set ruby ruby26</code> (this effectively takes macOS default ruby installation out of game)</li>
<li>removed all gems from <code>~/.gem/ruby/2.6.0/gems</code> which caused errors while invoking the <code>gem</code> command</li>
<li>run <code>gem pristine</code> commands for all gems listed by gem list (the exact commands are part of the warnings)</li>
<li>finally <code>gem update --user-install</code></li>
</ol>

I used rvm to install ruby 1.9.3. even though it was successfully installed, it complained about libyaml. and now every time i wanna install a gem (say rails) this warning shows up:

<pre><code>It seems your ruby installation is missing psych (for YAML output). To eliminate this warning, please install libyaml and reinstall your ruby.
</code></pre>

I use Mac os X 10.7 (Lion).

how to solve "ruby installation is missing psych" error?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我使用rvm安装ruby 1.9.3。尽管成功安装了libyaml，它还是抱怨libyaml。现在，每次我想安装一个gem (比如rails)时，都会出现这个警告：It seems your ruby installation is missing psych (for YAML output). To eliminate this warning, please install libyaml 

问如何解决"ruby安装缺失心理“的错误？
EN

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问如何解决"ruby安装缺失心理“的错误？
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