Hi Ian, Thank you very much for the information. Our Legal department asked us to make sure that the generated binary code by this version of gcc doesn't contain any binary code from those three libraries (GMP, MPFR and MPC). If we cannot prove that, we cannot use this compiler. Are there official documents that state the binary code in these three libraries are not in any gcc runtime libraries and thus not in gcc generated binary code? Thanks, Christina --- On Thu, 7/1/10, Ian Lance Taylor <iant@xxxxxxxxxx> wrote: > From: Ian Lance Taylor <iant@xxxxxxxxxx> > Subject: Re: Gcc 4.4.4 GPL question > To: "xiaoyi wang" <xyaswang@xxxxxxxxx> > Cc: gcc-help@xxxxxxxxxxx > Date: Thursday, July 1, 2010, 12:01 AM > xiaoyi wang <xyaswang@xxxxxxxxx> > 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 >
