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Re: Gcc 4.4.4 GPL question
- From: Ian Lance Taylor <iant at google dot com>
- To: xiaoyi wang <xyaswang at yahoo dot com>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Thu, 01 Jul 2010 00:01:27 -0700
- Subject: Re: Gcc 4.4.4 GPL question
- References: <747171.83484.qm@web112505.mail.gq1.yahoo.com>
xiaoyi wang <xyaswang@yahoo.com> writes:
> We want to use gcc 4.4.4 to build our commercial products. But while
> reviewing the gcc licences, we got a GPL question about gcc 4.4
> prerequisite libraries GMP, MPFR and MPC. These three libraries are
> required to build gcc. However, their source trees are not bundled
> with gcc 4.4.4 source tree downloaded from gnu gcc ftp site. At the
> top level of gcc 4.4.4 source tree, there is a COPYING.RUNTIME license
> which grants additional permissions to use gcc to build commercial
> products. Does this license also cover GMP, MPFR and MPC?
Those libraries are not part of the runtime. They are only used at
compile time. COPYING.RUNTIME is only for code which your program will
at runtime. It does not apply to GMP, MPFR, and MPC, and that is OK.
> My question is: is it legally safe to use gcc 4.4 to build commercial
> products without exposing our code to GPL?
Yes.
Ian