Linux libstdc++.so.5：无法打开共享对象文件 - 但库已安装且是最新的
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libstdc++.so.5: cannot open shared object file - but library is installed and up-to-date
提问by Jake Wilson
My client had some developer write a small c++ command-line app to run on their Linux servers. On one of the servers (running Fedora 11), when I execute the app I get the following error:
我的客户让一些开发人员编写了一个小的 c++ 命令行应用程序来在他们的 Linux 服务器上运行。在其中一台服务器（运行 Fedora 11）上，当我执行应用程序时，出现以下错误：
error while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory
Obviously the first thing I did was
显然我做的第一件事是
yum install libstdc++
But I get
但我得到
Package libstdc++-4.4.1-2.fc11.x86_64 already installed and latest version
So the library already exists and is up-to-date. Usually to me these errors indicate a missing library. So where should I look next?
所以图书馆已经存在并且是最新的。通常对我来说，这些错误表明缺少库。那么接下来我应该看哪里呢？
采纳答案by Ken Bloom
libstdc++-4.4.1-2.fc11.x86_64installs libstdc++.so.6. You need the compat-libstdc++-33-3.2.3-66.x86_64package to get libstdc++.so.5. (Do not symlink! libstdc++.so.5and libstdc++.so.6are incompatible.)
libstdc++-4.4.1-2.fc11.x86_64安装libstdc++.so.6. 您需要该compat-libstdc++-33-3.2.3-66.x86_64软件包才能获取libstdc++.so.5. （不要符号链接！libstdc++.so.5并且 libstdc++.so.6不兼容。）
回答by Timo Geusch
Have you checked that the package does install libstdc++.so.5 and not some other version? That's your most likely problem.
您是否检查过该软件包是否安装了 libstdc++.so.5 而不是其他版本？那是你最有可能的问题。
回答by nos
libstdc++.so.5 is a very old version of the standard c++ library.
libstdc++.so.5 是标准 c++ 库的一个非常旧的版本。
Do a yum search libstdc++, you'll have to install one of the compat-libstdc++ packages.
做一个yum search libstdc++，你必须安装一个 compat-libstdc++ 包。
回答by anon
rpm hence the repo knows about shared library names and what provides them. So
rpm 因此，repo 知道共享库名称以及提供它们的内容。所以
yum install 'libstdc++.so.5'
wiil install whatever is necessary if the repo has it.
如果 repo 有它，wiil 安装任何必要的东西。
In your case it would fetch compat-libstdc++-33-3.2.3-66.i586.rpm and its 32-bit deps if you don't have them already because the binary you are trying to run is apparently 32-bit
在您的情况下，如果您还没有它们，它将获取 compat-libstdc++-33-3.2.3-66.i586.rpm 及其 32 位 deps，因为您尝试运行的二进制文件显然是 32 位
回答by andymal
yum install compat-libstdc++-33 solved this for me.
yum install compat-libstdc++-33 为我解决了这个问题。
回答by RunThor
As stated by caf and aaron, running yum install compat-libstdc++-33 libstdc++.so.5 -yworked for me when I got a similar error.
正如 caf 和 aaron 所说，yum install compat-libstdc++-33 libstdc++.so.5 -y当我遇到类似的错误时，跑步对我有用。
The only catch I ran into was, I didn't have the correct repo checked out so I had to run yum-config-manager --enable rhel-7-server-optional-rpmsto access the files. If you are using something other than RedHat 7 you will need to search for the correct repo.
我遇到的唯一问题是，我没有检出正确的存储库，所以我必须运行yum-config-manager --enable rhel-7-server-optional-rpms才能访问文件。如果您使用的是 RedHat 7 以外的其他东西，您将需要搜索正确的存储库。
You could always check if you have the correct repo by running yum provides libstdc++.so.5first.
您始终可以通过yum provides libstdc++.so.5首先运行来检查您是否拥有正确的存储库。
回答by Zakaria AnisInfo
worked for me too on RedHat 7 : error was :
在 RedHat 7 上也为我工作：错误是：
error while loading shared libraries: libstdc++.so.5: wrong ELF class: ELFCLASS32
加载共享库时出错：libstdc++.so.5：错误的 ELF 类：ELFCLASS32
The solution was :yum install compat-libstdc++-33 libstdc++.so.5 -y
解决方案是：yum install compat-libstdc++-33 libstdc++.so.5 -y
