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Welcome to libcpuid's project page!

What is libcpuid?

libcpuid is a small C library for x86 CPU detection and feature extraction. Using it, you can:

On which platforms is it available?

It works on Windows, Linux and Mac OS X, both 32-bit and 64-bit flavours. Compiler support includes GCC and Microsoft Visual C++ (and compatible, e.g. Intel C++ compiler).


From Github.

This is basically a source-only project. File releases (i.e., official snapshots of the project's source code and precompiled library files) are not provided. Just fetch the code and build it yourself!

My [insert cpu name here] is not recognized correctly, what should I do?

Unrecognized CPUs are generally reported to the dedicated page. In case the problem seems to be more general, you may as well file a bug in the tracker.


There is a quickstart tutorial, which should clear up most topics. For a complete library reference, see the Doxygen-generated documentation.


libcpuid is provided with a BSD-style license. You are free to use it in your commercial applications.

All brand names and product names mentioned here are trademarks or registered trademarks of their respective owners.

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