blocks|key|4281192|text|在搜索/usr/local/opt/readline/lib/libreadline.7.dylib时似乎抛出了错误。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4281193|你有没有尝试过符号链接？|4281194|所以就像这样：|4281195|cd+/usr/local/opt/readline/lib+
ln+-s+libreadline.8.0.dylib+libreadline.7.dylib|code-block|syntax|javascript|4281196|我刚刚在ruby，macOS+2.5.3p105和Rails+5.2.2上尝试了一下，并且成功了。|4281197|entityMap^0|3|1B|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|W|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|X|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|Y|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|R|$]]

the error seems to be thrown when searching for <code>/usr/local/opt/readline/lib/libreadline.7.dylib</code>. 

Have you tried to symlink that? 

So something like: 

<pre><code>cd /usr/local/opt/readline/lib 
ln -s libreadline.8.0.dylib libreadline.7.dylib
</code></pre>

Just tried that on macOS Mojave, ruby 2.5.3p105 and Rails 5.2.2 and worked.

blocks|key|5698218|text|重新安装我的Ruby版本似乎已经修复了这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5698219|rvm+reinstall+2.3.7|code-block|syntax|javascript|5698220|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Reinstalling my Ruby version seems to have fixed it:

<pre class="lang-sh prettyprint-override"><code>rvm reinstall 2.3.7
</code></pre>

blocks|key|1704716|text|你能试一下吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1704717|cd+/usr/local/opt/readline/lib++++
ln+-s+libreadline.8.dylib+libreadline.7.dylib|code-block|syntax|javascript|1704718|您的思路是正确的，但是rails似乎正在寻找libreadline.7.dylib和libreadline.7.dylib不在文件夹中。|1704719|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|$]]

can you try 

<pre><code>cd /usr/local/opt/readline/lib 
ln -s libreadline.8.dylib libreadline.7.dylib
</code></pre>

you are on the right track but it seems like rails is looking for libreadline.7.dylib and libreadline.7.dylib is not there in the folder.

blocks|key|4281326|text|是的，最好的答案是重新安装。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4281327|您可以通过键入以下命令轻松获取版本：|4281328|ruby+-v|code-block|syntax|javascript|4281329|对于rbenv，命令为：|offset|length|style|CODE|4281330|rbenv+install+2.3.7|4281331|使用rvm|4281332|rvm+reinstall+2.3.7|4281333|entityMap^0|0|0|0|2|5|0|0|2|3|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|Z|8|@$K|10|L|11|M|N]]|9|@]|A|$]]|$1|O|3|P|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|13|8|@$K|14|L|15|M|N]]|9|@]|A|$]]|$1|S|3|T|5|F|7|16|8|@]|9|@]|A|$G|H]]|$1|U|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|V|$]]

Yes, the best answer is to reinstall. 

You can get the version easily by typing:

<pre><code>ruby -v
</code></pre>

With <code>rbenv</code>, the command is i.e.:

<pre><code>rbenv install 2.3.7
</code></pre>

with <code>rvm</code>:

<pre><code>rvm reinstall 2.3.7
</code></pre>

blocks|key|5698574|text|这是一个非常简单的解决方案，不需要重新构建RVM+gemset或sym链接库。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5698575|添加到Gemfile：|5698576|gem+'rb-readline'|code-block|syntax|javascript|5698577|如果你在做捆绑组|5698578|group+:development+do
++gem+'rb-readline'
end|5698579|然后运行|5698580|>+bundle|5698581|如果不起作用，请告诉我。|5698582|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|Z|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

A very simple solution that doesn't involve rebuilding your RVM gemset OR sym-linking libraries.

Add to your Gemfile:

<pre><code>gem 'rb-readline'
</code></pre>

If you are doing bundler groups

<pre><code>group :development do
 gem 'rb-readline'
end
</code></pre>

Then run 

<pre><code>&gt; bundle
</code></pre>

Let me know if that doesn't work.

blocks|key|5698203|text|在Ruby应用程序中，这通常是由具有扩展的gem(gem上说“构建本机扩展..”)引起的，这些gem是使用特定版本的readline构建的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5698204|基本上，有两种解决方案：|5698205|或者，您可以将gem的版本8符号链接到缺少的版本。这在许多情况下都可以工作，但如果向后兼容性被破坏，它就不会。|5698206|或者，如果gem实际上支持版本8，您可以重新安装特定的gem，或者通过运行gem+pristine+--all来“原生”它。|5698207|readline编辑：在你的“我尝试过的”范围内，重新安装PostgreSQL也是使用特定版本构建的二进制文件之一，它可能也需要重新构建，以使用系统库，如readline。|5698208|entityMap^0|1M|8|0|0|0|11|I|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|S|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|T|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|L|3|M|5|6|7|X|8|@]|D|@]|E|$]]|$1|N|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|O|$]]

Most often in Ruby-applications, this is caused by gems that have extensions (the gems saying "Building native extensions.."), that are built using a specific version of, in this case, <code>readline</code>.

Basically, there are two solutions:

Either, you can symlink version 8 of the gem, to the version missing. This will work in many cases, but if backwards compatibility is broken, it will not.

Or, if the gem actually supports version 8, you can reinstall that specific gem, or "pristine" it by running <code>gem pristine --all</code>.

EDIT: In scope of your "what I've tried", reinstalling PostgreSQL, is also one of the binaries, built using a specific version, that may also require a rebuild, to work with a system library, such as readline.

blocks|key|1704771|text|得到了这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1704772|dyld:+Library+not+loaded:+/usr/local/opt/mpfr/lib/libmpfr.4.dylib|code-block|syntax|javascript|1704773|做什么.|1704774|cd+/usr/local/opt/mpfr/lib/
ln+-s+libmpfr.dylib+libmpfr.4.dylib|1704775|为我做了macOS+Catalina的把戏|1704776|entityMap^0|0|0|0|0|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]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Got this issue:

<pre class="lang-sh prettyprint-override"><code>dyld: Library not loaded: /usr/local/opt/mpfr/lib/libmpfr.4.dylib
</code></pre>

doing...

<pre class="lang-sh prettyprint-override"><code>cd /usr/local/opt/mpfr/lib/
ln -s libmpfr.dylib libmpfr.4.dylib
</code></pre>

did the trick for me for macOS Catalina

blocks|key|2168747|text|所以我在这里检查了一些答案，但我认为他们不能与香草Mojave+mac安装一起工作。我使用的是10.14.4，而我做的是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2168748|从https://brew.sh|offset|length|2168749|$+brew+install+coreutils获取|unordered-list-item|style|CODE|2168750|：这会为mac安装gnu+coreutils+pkg，我们想要greadlink，因为macOSX的readlink不同于gnu+readlink。它非常令人困惑，但这就是macland.|2168751|$+echo+'alias+readlink=greadlink'+>>+~/.bash_aliases中的生活，我发现macs+readlink有点缺乏，所以我通过对greadlink进行别名来覆盖现有的readlink。(您可以通过$+alias+readlink=greadlink+>>+/etc/bashrc让所有用户都能使用它，这将使每个用户都能够使用我链接的已经链接的.8.文件，而不是‘.8.0’。文件，因为如果它被更新到.8.1.，那么我的读取链接将不会中断或遗漏库中的特性。我非常确定我们会在9%2B推出之前格式化我们的macs。|2168752|2168753|2168754|entityMap|0|LINK|mutability|MUTABLE|url|https://brew.sh/^0|0|1|F|0|0|0|O|0|V|9|0|0|1G|3A|15|5B|3|63|5|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@$D|10|E|11|1|12]]|A|$]]|$1|F|3|G|5|H|7|13|8|@$D|14|E|15|I|J]]|9|@]|A|$]]|$1|K|3|L|5|H|7|16|8|@$D|17|E|18|I|J]]|9|@]|A|$]]|$1|M|3|N|5|H|7|19|8|@$D|1A|E|1B|I|J]|$D|1C|E|1D|I|J]|$D|1E|E|1F|I|J]|$D|1G|E|1H|I|J]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

So Ive checked a few answers here but I dont think they can work with a vanilla Mojave mac install. Im using 10.14.4 while I did these:

<ul>
<li>get homebrew from <a href="https://brew.sh" rel="nofollow noreferrer">https://brew.sh</a></li>
<li><code>$ brew install coreutils</code> : this installs the gnu coreutils pkg for mac, we want the <code>greadlink</code> from this because macOSX's readlink is not the same as the gnu readlink. Its extremely confusing but such is the life in macland.</li>
<li><code>$ echo 'alias readlink=greadlink' &gt;&gt; ~/.bash_aliases</code> I found macs readlink to be a bit lacking so I overrode the existing readlink by aliasing greadlink. (you can make this usable by all users by <code>$ alias readlink=greadlink &gt;&gt; /etc/bashrc</code> which will enable every user to be able to use it.</li>
<li><code>$ ln -s /usr/local/opt/readline/lib/libreadline.8.dylib /usr/local/opt/readline/lib/libreadline.7.dylib</code> I linked the already linked <code>.8.</code> file instead of '.8.0.' file because if it were to get updated to <code>.8.1.</code> then my readlink wont break or miss features on the library. Im pretty sure we will format our macs before 9+ comes out.</li>
</ul>

blocks|key|5698619|text|背景:当我尝试安装tig时发生过这种情况，但我认为这是一个常见的问题，您可能需要手动将安装的软件链接到另一个软件所需的正确路径。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5698620|如果在Mac上找不到已安装的readline，则应运行|5698621|brew+install+readline|code-block|syntax|javascript|5698622|安装deadline后，brew将要求您进行链接。但实际上您不能通过运行|5698623|brew+link+readline|5698624|即使您不能通过运行|5698625|sudo+brew+link+readline|5698626|Mac+OS将警告您这是极其危险的，并阻止您这样做。|5698627|readline的最新版本是版本8，因此您将看到如下错误消息|5698628|Library+not+loaded:+/usr/local/opt/readline/lib/libreadline.8.dylib|5698629|brew的安装截止日期为|5698630|/usr/local/Cellar/readline/8.0.4|5698631|因此，您必须使用ls命令手动将其链接到软件所需的位置|5698632|ln+-s+/usr/local/Cellar/readline/8.0.4+/usr/local/opt/readline|5698633|享受吧！|5698634|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|19|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1A|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|1B|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|1C|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|1D|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|1E|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|1F|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1G|8|@]|9|@]|A|$]]|$1|U|3|V|5|F|7|1H|8|@]|9|@]|A|$G|H]]|$1|W|3|X|5|6|7|1I|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|F|7|1J|8|@]|9|@]|A|$G|H]]|$1|10|3|11|5|6|7|1K|8|@]|9|@]|A|$]]|$1|12|3|13|5|F|7|1L|8|@]|9|@]|A|$G|H]]|$1|14|3|15|5|6|7|1M|8|@]|9|@]|A|$]]|$1|16|3|-4|5|6|7|1N|8|@]|9|@]|A|$]]]|17|$]]

Background: This has happened when I tried to install tig, but I think this is a common issue that you may have that you need to manually link the installed software into the right path that another software wants.

If you can not find readline installed on your Mac, you should run

<pre><code>brew install readline
</code></pre>

After you installed deadline, brew will ask you to link it. But actually you can not link by running

<pre><code>brew link readline
</code></pre>

Even you can not link by running

<pre><code>sudo brew link readline
</code></pre>

Mac OS will warn you this is extremely dangerous and stop you to do.

The Latest version of readline is version 8, so you will see the error message like

<pre><code>Library not loaded: /usr/local/opt/readline/lib/libreadline.8.dylib
</code></pre>

The brew installed deadline at

<pre><code>/usr/local/Cellar/readline/8.0.4
</code></pre>

So you have to manually link it to the place that your software wants by using command ls

<pre><code>ln -s /usr/local/Cellar/readline/8.0.4 /usr/local/opt/readline
</code></pre>

Enjoy!

blocks|key|4281368|text|我建议不要手动符号链接本机库。在OSX10.4中，标准的包含库路径/usr/include不再使用，并且被SIP锁住(使得将东西移动到变得困难)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4281369|苹果提供了一个“传统安装程序”，让你能够在“旧位置”安装头文件，这也将解析你的路径，以正确地找到通过brew安装的头文件。|4281370|cp+/Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg+~/Desktop+&&+open+~/Desktop/macOS_SDK_headers_for_macOS_10.14.pkg`|code-block|syntax|javascript|4281371|See+here+for+a+detailed+write-up+on+what+is+going+on。|4281372|entityMap|0|LINK|mutability|MUTABLE|url|https://silvae86.github.io/sysadmin/mac/osx/mojave/beta/libxml2/2018/07/05/fixing-missing-headers-for-homebrew-in-mac-osx-mojave/^0|X|C|0|1E|4|0|0|0|1G|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$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|@$9|14|A|15|1|16]]|E|$]]|$1|O|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

I would recommend against manually symlink'ing native libraries. Aas of OS X 10.4, the standard include library path <code>/usr/include</code> is no longer used and is locked by SIP (making it difficult to move things to).

Apple ships a “legacy installer” for you to be able to install the headers in the “old location”, which will also resolve your path to correctly find headers installed via <code>brew</code>.

<pre><code>cp /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg ~/Desktop &amp;&amp; open ~/Desktop/macOS_SDK_headers_for_macOS_10.14.pkg`
</code></pre>

<a href="https://silvae86.github.io/sysadmin/mac/osx/mojave/beta/libxml2/2018/07/05/fixing-missing-headers-for-homebrew-in-mac-osx-mojave/" rel="nofollow noreferrer">See here for a detailed write-up on what is going on</a>.

blocks|key|5698434|text|我的问题在运行lftp时也是一样的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|5698435|只要运行brew+upgrade就解决了我的问题，因为它已经更新了(在其他方面)：|5698436|readline+8.0.0_1+->+8.0.1
lftp+4.8.4+->+4.8.4_2|code-block|syntax|javascript|5698437|entityMap^0|7|4|0|4|C|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

My problem was just the same when running <code>lftp</code>.

Just running <code>brew upgrade</code> has solved my problem, as it has updated (among others):

<pre><code>readline 8.0.0_1 -&gt; 8.0.1
lftp 4.8.4 -&gt; 4.8.4_2
</code></pre>

When I try running <code>rails console</code> I get this error:

<pre><code>/Users/TuzsNewMacBook/.rvm/gems/ruby-2.3.7/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require':
 dlopen(/Users/TuzsNewMacBook/.rvm/rubies/ruby-2.3.7/lib/ruby/2.3.0/x86_64-darwin18/readline.bundle, 9): 
Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib (LoadError)
</code></pre>

A quick search got me to <a href="https://stackoverflow.com/questions/21488778/cant-run-psql-command-keep-getting-the-same-error">this post</a> and I've tried a few things:

<code>brew reinstall postgresql</code> (this is indeed the DB for this project)

and 

<pre><code>cd /usr/local/opt/readline/lib 
ln libreadline.8.0.dylib libreadline.6.2.dylib
</code></pre>

(my version of readline is 8)

and
<code>brew link readline --force</code>

But none of these have fixed it.

I recently added <code>pry-coolline</code>, <code>guard</code> and <code>guard-livereload</code> gems to my project if that makes any difference (rails console loaded fine before those). I'm running on the latest macos. 

(Update) I’m using pry rails as my rails console, if that makes any difference. 

Any help? Thanks.

Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib

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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功能1上新10个字符

功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符功能2描述100个字符。

功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符功能2上新100个字符。

功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符功能5描述100个字符

功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符功能5上新100个字符

功能4上新

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当我尝试运行rails console时，我得到了这个错误：/Users/TuzsNewMacBook/.rvm/gems/ruby-2.3.7/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require': dlopen(/Users/TuzsNewMacBook/.rvm/

问未加载库: /usr/local/opt/readline/lib/libreadline.7.dylib
EN

回答 11

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问未加载库: /usr/local/opt/readline/lib/libreadline.7.dylibEN

回答 11

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问未加载库: /usr/local/opt/readline/lib/libreadline.7.dylib
EN