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https://issues.apache.org/jira/browse/SPARK-5669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14327953#comment-14327953
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Xiangrui Meng commented on SPARK-5669:
--------------------------------------
GFortran is part of GCC (https://gcc.gnu.org/wiki/GFortran) and hence the
`libgfortran` library. In Apple's libgfortran header file
(http://www.opensource.apple.com/source/gcc/gcc-5484/libgfortran/libgfortran.h),
I found the following:
{code}
As a special exception, if you link this library with other files,
some of which are compiled with GCC, to produce an executable,
this library does not by itself cause the resulting executable
to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why
the executable file might be covered by the GNU General Public License.
{code}
The official one linked to the special exception page:
https://github.com/gcc-mirror/gcc/blob/master/libgfortran/libgfortran.h#L18
> Spark assembly includes incompatibly licensed libgfortran, libgcc code via
> JBLAS
> --------------------------------------------------------------------------------
>
> Key: SPARK-5669
> URL: https://issues.apache.org/jira/browse/SPARK-5669
> Project: Spark
> Issue Type: Bug
> Components: Build
> Reporter: Sean Owen
> Assignee: Sean Owen
> Priority: Blocker
> Fix For: 1.3.0
>
>
> Sorry for "Blocker", but it's a license issue. The Spark assembly includes
> the following, from JBLAS:
> {code}
> lib/
> lib/static/
> lib/static/Mac OS X/
> lib/static/Mac OS X/x86_64/
> lib/static/Mac OS X/x86_64/libjblas_arch_flavor.jnilib
> lib/static/Mac OS X/x86_64/sse3/
> lib/static/Mac OS X/x86_64/sse3/libjblas.jnilib
> lib/static/Windows/
> lib/static/Windows/x86/
> lib/static/Windows/x86/libgfortran-3.dll
> lib/static/Windows/x86/libgcc_s_dw2-1.dll
> lib/static/Windows/x86/jblas_arch_flavor.dll
> lib/static/Windows/x86/sse3/
> lib/static/Windows/x86/sse3/jblas.dll
> lib/static/Windows/amd64/
> lib/static/Windows/amd64/libgfortran-3.dll
> lib/static/Windows/amd64/jblas.dll
> lib/static/Windows/amd64/libgcc_s_sjlj-1.dll
> lib/static/Windows/amd64/jblas_arch_flavor.dll
> lib/static/Linux/
> lib/static/Linux/i386/
> lib/static/Linux/i386/sse3/
> lib/static/Linux/i386/sse3/libjblas.so
> lib/static/Linux/i386/libjblas_arch_flavor.so
> lib/static/Linux/amd64/
> lib/static/Linux/amd64/sse3/
> lib/static/Linux/amd64/sse3/libjblas.so
> lib/static/Linux/amd64/libjblas_arch_flavor.so
> {code}
> Unfortunately the libgfortran and libgcc libraries included for Windows are
> not licensed in a way that's compatible with Spark and the AL2 -- LGPL at
> least.
> It's easy to exclude them. I'm not clear what it does to running on Windows;
> I assume it can still work but the libs would have to be made available
> locally and put on the shared library path manually. I don't think there's a
> package manager as in Linux that would make it easily available. I'm not able
> to test on Windows.
> If it doesn't work, the follow-up question is whether that means JBLAS has to
> be removed on the double, or treated as a known issue for 1.3.0.
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