CentOS 7 error libstdc++.so.6: version 'GLIBCXX_3.4.20' not found

Little scum · Posted on 4/16/2024 2:27:27 PM

When running a .NET 8 application on CentOS 7, the error is as follows:

[32514]: /itsvse: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /itsvse)
[32514]: /itsvse: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by /itsvse)

The reason for the exception is that the libstdc++.so.6 version is too low, and the command is as follows:

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solution

To compile the new version of GCC, the command is as follows:

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It takes a long time to compile and may eventually fail to compile, butIt does not affect the normal generation of "libstdc++.so.6.0.29"。

Reset the libstdc++.so.6 softlink with the following command:

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Finally, attach the compiled file:

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Little scum · Posted on 1/11/2025 4:53:05 PM

To see the missing dependencies, command:

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root@ubuntu2004:/home/temp/test8/testubuntucv# ldd *.so* | grep found
liblttng-ust.so.0 => not found
libtesseract.so.4 => not found
libgtk-x11-2.0.so.0 => not found
libgdk-x11-2.0.so.0 => not found
libdc1394.so.22 => not found
libavcodec.so.58 => not found
libavformat.so.58 => not found
libavutil.so.56 => not found
libswscale.so.5 => not found
libIlmImf-2_3.so.24 => not found

Little scum · Posted on 1/11/2025 5:28:48 PM

glibc and GLIBCXX are two different libraries that differ significantly in their functionality and usage:

glibc (GNU C Library):

This is an implementation of the C standard library.
It provides basic functions such as operating system calling, memory management, and string handling.
It is one of the core libraries of the Linux system, and almost all programs rely on it.
Contains an implementation of the POSIX standard function.
Hardware architecture agnostic, providing consistent APIs.

GLIBCXX (GNU Standard C++ Library):

This is an implementation of the C++ standard library.
It includes C++ features such as containers (such as vectors, lists), algorithms, and iterators.
The C++ Standard Template Library (STL) is implemented.
It provides C++-specific functions, such as intelligent pointers, regular expressions, etc.
is part of the GCC compiler to support C++ programs.

Main differences:

Programming languages: glibc for C and GLIBCXX for C++.
Scope of functions: glibc is more basic, and GLIBCXX provides more advanced data structures and algorithms.
Dependencies: Almost all Linux programs require glibc, while only C++ programs require GLIBCXX.
Update frequency: usually glibc updates are slower and focus more on stability; GLIBCXX is updated quickly to keep up with changes in the C++ standard.
Understanding the difference between these two libraries is important for choosing the right tools and libraries for developing Linux applications.

Little scum · Posted on 1/11/2025 5:32:47 PM

glibc source code download:https://ftp.gnu.org/gnu/glibc/

[linux] CentOS 7 error libstdc++.so.6: version 'GLIBCXX_3.4.20' not found

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