Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/4453#issuecomment-74276104
So, I think we have to commit this before another release, since I think we
can't distribute these artifacts.
I tried running Spark on Windows 8.1 + cygwin without these libs built in,
and the good news is that it works. This is to be expected, given Mikio's notes
here: https://github.com/mikiobraun/jblas/wiki/Missing-Libraries
Without Cygwin, it may also work, but in the worst case, requires
installing and putting on the library path a few more libraries, just as is
required on Linux. That seems... like something the project could arguably
accept in the short term.
Now, the bad news is that libgfortran may be baked into the Linux 32-bit
and OS X native code too. (Not Linux 64-bit). That's a significantly bigger
problem, not least of which because the LGPL code can't be neatly excised.
Mikio mentioned he may have some time to adjust the packaging to allow
exclusion of the LGPL code. That may take some time. That would make end users
install the LGPL libs themselves, which they already have to for Linux 64 bit.
We had talked about standardizing on netlib, which also requires special
deployment, but for that same reason, doesn't have this distribution issue.
Maybe it's possible to put JBLAS behind a profile too so it's not built
with native code support by default, but I am not yet sure it's possible.
Any thoughts at this stage?
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