Linux ldconfig 错误：不是符号链接
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ldconfig error: is not a symbolic link
提问by Rodrigo Gurgel
When running:
运行时：
sudo /sbin/ldconfig
the following error appears:
出现以下错误：
/sbin/ldconfig: /usr/local/lib/ is not a symbolic link
When I run file:
当我运行文件时：
file /usr/local/lib/
/usr/local/lib/: directory
Inside /usr/local/lib/there are three libraries that I use. I'll call them here as lib1, lib2and lib3.
里面/usr/local/lib/有我使用的三个库。我将它们称为lib1,lib2和lib3。
Now, when I do an lddon my binary it results:
现在，当我ldd对我的二进制文件执行 an时，结果是：
lib1.so => not found
lib2.so => not found
lib3.so => /usr/local/lib/lib3.so (0x00216000)
But all of then are in the same folder as /usr/local/lib/{lib1,lib2,lib3}.so.
但所有这些都与/usr/local/lib/{lib1,lib2,lib3}.so.
Every time I run ldconfig, the same error appears:
每次运行时ldconfig，都会出现相同的错误：
/usr/local/lib/ is not a symbolic link
I thought /usr/local/libshould be declared twice in /etc/ld.conf.d/*.conf, but not:
我认为/usr/local/lib应该在 中声明两次/etc/ld.conf.d/*.conf，但不是：
sudo egrep '\/usr\/local' /etc/ld.so.conf.d/*
projectA.conf.old:/usr/local/projectA/lib
local.conf:/usr/local/lib
ld.so.confonly includes /etc/ld.so.conf.d/*.conf, so this *.oldisn't processed, and it refers to /usr/local/projectA/lib.
ld.so.conf只包含/etc/ld.so.conf.d/*.conf，所以这*.old不被处理，它指的是/usr/local/projectA/lib.
After a time tring I deleted all lib1 and lib2 (at some point I tested it on binary's folder), the same error occurs.
经过一段时间后，我删除了所有 lib1 和 lib2（在某些时候我在二进制文件夹中对其进行了测试），发生了同样的错误。
采纳答案by Dan Pritts
I ran into this issue with the Oracle 11R2 client. Not sure if the Oracle installer did this or someone did it here before i arrived. It was not 64-bit vs 32-bit, all was 64-bit.
我在使用 Oracle 11R2 客户端时遇到了这个问题。在我到达之前，不确定 Oracle 安装程序是这样做的还是有人在这里这样做的。不是 64 位 vs 32 位，都是 64 位。
The error was that libexpat.so.1was not a symbolic link.
错误是那libexpat.so.1不是符号链接。
It turned out that there were two identical files, libexpat.so.1.5.2and libexpat.so.1. Removing the offending file and making it a symlink to the 1.5.2 version caused the error to go away.
结果发现有两个相同的文件，libexpat.so.1.5.2和libexpat.so.1. 删除有问题的文件并使其成为 1.5.2 版本的符号链接会导致错误消失。
Makes sense that you'd want the well-known name to be a symlink to the current version. If you do this, it's less likely that you'll end up with a stale library.
您希望众所周知的名称是当前版本的符号链接是有道理的。如果你这样做，你最终得到一个陈旧的库的可能性就会降低。
回答by alinsoar
You need to include the path of the libraries inside /etc/ld.so.conf, and rerun ldconfig to upate the list
您需要在 /etc/ld.so.conf 中包含库的路径，然后重新运行 ldconfig 以更新列表
Other possibility is to include in the env variable LD_LIBRARY_PATH the path to your library, and rerun the executable.
另一种可能性是在环境变量 LD_LIBRARY_PATH 中包含库的路径，然后重新运行可执行文件。
check the symbolic links if they point to a valid library ...
检查符号链接是否指向有效的库...
You can add the path directly in /etc/ld.so.conf, without include...
可以直接在/etc/ld.so.conf中添加路径，不包含...
run ldconfig -pto see whether your library is well included in the cache.
运行ldconfig -p以查看您的库是否包含在缓存中。
回答by Rodrigo Gurgel
Solved, at least at the point of the question.
解决了，至少在问题的关键点上。
I searched in the web before asking, an there were no conclusive solution, the reason why this error is: lib1.so and lib2.so are not OK, very probably where not compiled for a 64 PC, but for a 32 bits machine otherwise lib3.so is a 64 bits lib. At least that is my hipothesis.
我问之前在网上搜索过，没有结论性的解决方案，这个错误的原因是：lib1.so 和 lib2.so 不正常，很可能不是为 64 位 PC 编译的，否则为 32 位机器编译lib3.so 是一个 64 位的库。至少这是我的假设。
VERY unfortunately ldconfig doesn't give a clean error message informing that it could not load the library, it only pumps:
非常不幸的是 ldconfig 没有给出干净的错误消息，通知它无法加载库，它只会泵：
ldconfig: /folder_where_the_wicked_lib_is/ is not a symbolic link
ldconfig: /folder_where_the_wicked_lib_is/ 不是符号链接
I solved this when I removed the libs not found by ldd over the binary. Now it's easier that I know where lies the problem.
当我删除 ldd 通过二进制文件找不到的库时，我解决了这个问题。现在我更容易知道问题出在哪里。
My ld version: GNU ld version 2.20.51, and I don't know if a most recent version has a better message for its users.
我的 ld 版本：GNU ld 版本 2.20.51，我不知道最新版本是否对其用户有更好的信息。
Thanks.
谢谢。
回答by Jeetendra_Nath_Jha
I simply ran the command below:
我只是运行了下面的命令：
export LD_LIBRARY_PATH=/usr/lib/
Now it is working fine.
现在它工作正常。
回答by Maxim Akristiniy
simple run in shell : sudo apt-get install --reinstall libexpat1
got same problem with libxcb - solved in this way - very fast :)
在 shell 中简单运行：sudo apt-get install --reinstall libexpat1
遇到了与 libxcb 相同的问题 - 以这种方式解决 - 非常快 :)
