cpuid is a C++ library for CPU dispatching. Currently the project can detect the following CPU capabilities:
- Instruction sets detected on x86: FPU, MMX, SSE, SSE2, SSE3, SSSE3, SSE 4.1, SSE 4.2, PCLMULQDQ, AVX, and AVX2
- Instruction sets detected on ARM: NEON
cpuid license is based on the BSD License. Please refer to the LICENSE.rst file for more details.
We have tested cpuid on various versions of Windows, Linux and Mac. We run automated tests on x86 and ARM architectures with different compilers like g++, clang and Microsoft Visual Studio.
You can see the status by selecting the cpuid project on the Steinwurf buildbot page.
We use the
waf build system to build the cpuid static library.
We have some additional waf tools which can be found at waf.
To configure and build cpuid, run the following commands:
python waf configure python waf build
waf configure command will download several auxiliary libraries
into a folder called
bundle_dependencies within the cpuid folder.
You can also use the
--bundle-path option to specify the download
location for the project dependencies:
python waf configure --bundle-path=/my/path/to/bundle_dependencies
When building the static lib, waf will also build the
executable which is useful to print the available CPU instruction sets.
The compiled binary is located in the
[platform] denotes your current platform,
We have created cpuid to fit our specific needs, however we hope that others may also find it useful. When designing cpuid we found inspiration in these other nice projects:
- CPUID article on Wikipedia: http://en.wikipedia.org/wiki/CPUID
- zchotia's gist: https://gist.github.com/zchothia/3078968
- Facebook CPU ID implementation: https://github.com/facebook/folly/blob/master/folly/CpuId.h
- ARM Cortex-A Programmer's guide: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.den0013d/index.html