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Date: Tue, 30 Apr 2013 08:32:01 -0400
From: LM <>
Subject: Re: Licensing.

While the license subject has been brought up, would appreciate any
clarification on how licenses/copyrights might apply to runtime libraries
like musl and distributing executables.

Here's what I've dug up trying to read through the 'legalese'.  gcc
provides a runtime exception ( ), so according to it,
you should be able to use the license of your choice with your executable
and don't have to use the compiler's license.  Linux kernel developers
don't consider the API an issue and have a note ( ) about not copyrighting
kernel services through normal system calls.  Zvi and I were discussing
copyright and he mentioned the case of Oracle against Google and that APIs
were found not copyrightable.  So, if you build a program with gcc and musl
as the runtime library, do you need to distribute any kind of licensing
information other than whatever you decide to license your own program

I was reading some information on mingw-w64.  It uses a runtime made up of
a variety of licenses (from BSD to LGPL).
There's mention of distributing a runtime license with executables created
by the compiler:
With mingw (the original from, the runtime has always been
in the public domain in the past, so needing to supply the end user with a
runtime license when distributing executables was never necessary.  Was
surprised to read the recommendation that one needed a runtime license to
distribute programs with mingw-w64.  My understanding was that one doesn't
need this sort of thing for gcc/glibc on standard Linux systems.  I'm
wondering what applies to musl and what doesn't.  Does one need to
distribute the musl license when distributing executables built with it?
Does the gcc compiler runtime exception cover the issue or is there
something else that applies?  Also can't help wondering how it applies to
llvm ( and executables
built with it.

I agree with the previous comment posted about the more licenses involved
the more confusing it can get.  Any further information or clarifications
would be greatly appreciated.  Thanks.


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