` to see which version of libstdc++.so.6 is required by an application - H2: How to download and install libstdc++.so.6 on your system? - H3: Use your package manager to install or update the libstdc++-devel package - H3: Use the LD_LIBRARY_PATH environment variable to specify the location of the newer libstdc++.so.6 library - H3: Use the LD_PRELOAD environment variable to force an application to use the newer libstdc++.so.6 library - H2: Conclusion - H3: Summary of the main points - H3: Call to action and feedback request - H2: FAQs - H3: What is the difference between libstdc++ and libstdc++.so.6? - H3: How can I find out which version of GCC was used to compile an application? - H3: What are the benefits of using a newer version of libstdc++.so.6? - H3: What are the risks of using a newer version of libstdc++.so.6? - H3: How can I uninstall or revert to an older version of libstdc++.so.6? Article with HTML formatting: How to Download libstdc++.so.6 on Linux
If you are using Linux, you may have encountered an error message like this:
download libstdc++.so.6
ImportError: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found
This means that your system does not have the required version of libstdc++.so.6, a shared library that is part of the GNU Standard C++ Library. In this article, we will explain what libstdc++.so.6 is, why you need it, and how to download and install it on your system.
What is libstdc++.so.6 and why do you need it?
libstdc++.so.6 is a shared library that is part of the GNU Standard C++ Library
The GNU Standard C++ Library (libstdc++) is a collection of functions and classes that implement the standard C++ library features, such as strings, vectors, maps, algorithms, and exceptions. It is one of the core components of the GNU Compiler Collection (GCC), which is a widely used compiler for C, C++, and other languages.
libstdc++.so.6 contains the basic information of the GCC compiler, such as the version details
The file name libstdc++.so.6 indicates that it is a shared object (SO) file, which is a type of binary file that can be loaded and executed by other programs at runtime. The number 6 indicates that it is compatible with GCC version 3 or later. The file also contains symbols that indicate which versions of GLIBCXX (the GNU C++ runtime library) are supported by it. For example, GLIBCXX_3.4.20 means that it supports GLIBCXX version 3.4.20.
libstdc++.so.6 is required by some applications that are compiled with GCC, such as TensorFlow
Some applications that are written in C++ and compiled with GCC may depend on libstdc++.so.6 to run properly. For example, TensorFlow, a popular machine learning framework, requires GLIBCXX_3.4.20 or higher. How to check if you have libstdc++.so.6 installed on your system?
Use the command `strings /usr/lib64/libstdc++.so.6 grep GLIBCXX` to see the available versions of GLIBCXX
One way to check if you have libstdc++.so.6 installed on your system is to use the `strings` command, which prints the printable characters in a binary file. By piping the output of `strings /usr/lib64/libstdc++.so.6` to the `grep` command, which filters the lines that match a pattern, you can see the available versions of GLIBCXX in your libstdc++.so.6 file. For example, the output may look like this:
GLIBCXX_3.4 GLIBCXX_3.4.1 GLIBCXX_3.4.2 ... GLIBCXX_3.4.19 GLIBCXX_3.4.20 GLIBCXX_3.4.21
This means that your libstdc++.so.6 file supports GLIBCXX versions from 3.4 to 3.4.21.
Use the command `ldd ` to see which version of libstdc++.so.6 is required by an application
Another way to check if you have libstdc++.so.6 installed on your system is to use the `ldd` command, which prints the shared libraries required by an executable file. By running `ldd ` on an application that depends on libstdc++.so.6, you can see which version of libstdc++.so.6 is required by it. For example, the output may look like this:
linux-vdso.so.1 => (0x00007fffcf9fe000) libtensorflow_framework.so => /usr/local/lib/python2.7/dist-packages/tensorflow/python/_pywrap_tensorflow_internal.so (0x00007f8a0a5b7000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f8a0a39a000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f8a0a196000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f8a09e8d000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f8a09b0b000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8a09741000) /lib64/ld-linux-x86-64.so.2 (0x000055e7b7b9e000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f8a0952b000)
This means that TensorFlow requires libstdc++.so.6 from /usr/lib/x86_64-linux-gnu/, which supports GLIBCXX up to 3.4.21.
How to download and install libstdc++.so.6 on your system?
Use your package manager to install or update the libstdc++-devel package
The easiest way to download and install libstdc++.so.6 on your system is to use your package manager, such as apt, yum, or zypper, to install or update the libstdc++-devel package. This package contains the header files and libraries needed for C++ development with GCC. For example, on Ubuntu, you can run the following command:
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sudo apt-get install libstdc++-devel
This will install or update the libstdc++-devel package and its dependencies, including libstdc++.so.6.
Use the LD_LIBRARY_PATH environment variable to specify the location of the newer libstdc++.so.6 library
If you have downloaded a newer version of libstdc++.so.6 from another source, such as a tarball or a binary package, you can use the LD_LIBRARY_PATH environment variable to specify the location of the newer library. This variable tells the linker where to look for shared libraries at runtime. For example, if you have extracted the newer libstdc++. so.6 library to /home/user/lib64/, you can run the following command:
export LD_LIBRARY_PATH=/home/user/lib64:$LD_LIBRARY_PATH
This will prepend /home/user/lib64/ to the LD_LIBRARY_PATH variable, which means that the linker will look for libstdc++.so.6 in that directory first, before searching the default locations. You can then run your application that requires the newer libstdc++.so.6 library.
Use the LD_PRELOAD environment variable to force an application to use the newer libstdc++.so.6 library
If you want to force an application to use the newer libstdc++.so.6 library, regardless of the LD_LIBRARY_PATH variable, you can use the LD_PRELOAD environment variable. This variable tells the linker to load a specific shared library before any other libraries. For example, if you have extracted the newer libstdc++.so.6 library to /home/user/lib64/, you can run the following command:
export LD_PRELOAD=/home/user/lib64/libstdc++.so.6
This will load the newer libstdc++.so.6 library before any other libraries, which means that it will override the default or older version of libstdc++.so.6. You can then run your application that requires the newer libstdc++.so.6 library.
Conclusion
Summary of the main points
In this article, we have explained what libstdc++.so.6 is, why you need it, and how to download and install it on your system. We have also shown you how to check if you have libstdc++.so.6 installed on your system, and how to use different environment variables to specify or force the location of the newer libstdc++.so.6 library.
Call to action and feedback request
We hope that this article has helped you to solve your problem with libstdc++.so.6 on Linux. If you have any questions or comments, please feel free to leave them below. We would love to hear from you and help you further.
FAQs
What is the difference between libstdc++ and libstdc++.so.6?
libstdc++ is the name of the GNU Standard C++ Library, which is a collection of functions and classes that implement the standard C++ library features. libstdc++.so.6 is the name of a shared object file that contains part of the GNU Standard C++ Library, specifically the basic information of the GCC compiler, such as the version details.
How can I find out which version of GCC was used to compile an application?
One way to find out which version of GCC was used to compile an application is to use the `strings` command on the executable file and look for a line that starts with `GCC: (`. For example, running `strings /usr/bin/gcc grep "GCC: ("` will show something like this:
GCC: (Ubuntu 5.4.0-6ubuntu116.04.12) 5.4.0 20160609
This means that GCC version 5.4.0 was used to compile gcc on Ubuntu 16.04.
What are the benefits of using a newer version of libstdc++.so.6?
Using a newer version of libstdc++.so.6 may allow you to run applications that require a higher version of GLIBCXX than your system provides by default. This may enable you to use more advanced features or functionalities of those applications.
What are the risks of using a newer version of libstdc++.so.6?
Using a newer version of libstdc++.so.6 may cause compatibility issues with other applications or libraries that depend on an older version of GLIBCXX than your system provides by default. This may result in errors or crashes when running those applications or libraries.
How can I uninstall or revert to an older version of libstdc++.so.6?
If you have installed or updated libstdc++.so.6 using your package manager, you can uninstall or downgrade it using the same package manager. For example, on Ubuntu, you can run the following command:
sudo apt-get remove libstdc++-devel
This will remove the libstdc++-devel package and its dependencies, including libstdc++.so.6.
If you have downloaded or extracted a newer version of libstdc++. so.6 from another source, you can delete or move the newer file to another location. You can also unset or change the LD_LIBRARY_PATH or LD_PRELOAD environment variables to stop using the newer file. For example, you can run the following command:
unset LD_PRELOAD
This will unset the LD_PRELOAD variable, which means that the linker will not load any specific shared library before any other libraries. 44f88ac181
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