[Numpy-discussion] Copyright status of NumPy binaries on Windows/OS X

Julian Taylor jtaylor.debian at googlemail.com
Tue Oct 7 17:13:42 EDT 2014

On 06.10.2014 18:54, Andrew Collette wrote:
> Hi all,
> I am working with the HDF Group on a new open-source viewer program
> for HDF5 files, powered by NumPy, h5py, and wxPython.  On Windows,
> since people don't typically have Python installed, we are looking to
> distribute the application using PyInstaller, which embeds
> dependencies like NumPy.  Likewise for OS X (using Py2App).
> We would like to make sure we don't accidentally include
> non-open-source components... I recall there was some discussion here
> about using the Intel math libraries for binary releases on various
> platforms.  Do the releases on SourceForge or PyPI use any proprietary
> code?  We'd like to avoid building NumPy ourselves if we can avoid it.
> Apologies if this is explained somewhere, but I couldn't find it.
> Thanks!
> Andrew Collette

the numpy win32 binaries on sourceforge do not contain any proprietary
code. They are build with mingw 3.4.5 and are using a f2c'd version of
netlib blas and lapack which so far I know is public domain.
I think the macos wheels on pypi are built using ATLAS but they do also
contain libquadmath which is LGPL licensed. Its probably pulled in by
fortran (could maybe be removed by a rebuild as neither blas nor numpy
use it)

There are also unofficial win64 binaries floating around, I don't know
what they are using, but its possible they contain MKL, you need to
check with who is building these (Christoph Gohlke I think).


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