Re: [PATCH v2 1/1] BaseTools/tools_def: Add GCC49xASL Toolchain support

[Leif Lindholm <leif.lindholm@linaro.org>]

On Mon, Jun 25, 2018 at 06:21:27PM +0000, Chris Co wrote:
> > >-----Original Message-----
> > >From: Ard Biesheuvel [mailto:ard.biesheuvel@linaro.org]
> > >Sent: Monday, June 25, 2018 3:34 PM
> > >To: Gao, Liming <liming.gao@intel.com>
> > >Cc: Chris Co <Christopher.Co@microsoft.com>; edk2-devel@lists.01.org;
> > >Leif Lindholm <leif.lindholm@linaro.org>; Charles Garcia-Tobin
> > ><Charles.Garcia- Tobin@arm.com>
> > >Subject: Re: [edk2] [PATCH v2 1/1] BaseTools/tools_def: Add GCC49xASL
> > >Toolchain support
> > >
> > >(+ Charles)
> > >
> > >On 25 June 2018 at 03:38, Gao, Liming <liming.gao@intel.com> wrote:
> > >> Chris:
> > >>    GCC 4.9 targeting arm-none-eabi. This GCC4.9 should run in Windows
> > OS.
> > >So, could you give some info where windows GCC49 is from.
> > >>
> 
> We get Windows GCC49 from linaro: https://releases.linaro.org/archive/14.09/components/toolchain/binaries/gcc-linaro-arm-none-eabi-4.9-2014.09_win32.zip
> Make comes from MinGW
> 
> > >
> > >OK, so first of all, could you elaborate on why we need a different ASL
> > >compiler? We have spent the past 5 years in conference calls and
> > >meeting rooms to standardize ACPI on ARM, so I am rather disappointed
> > >that we have this discrepancy.
> > >
> > >Then, could you explain why you chose GCC49? We have GCC5 now as well,
> > >which enables LTO and generally results in smaller code. Also, is there
> > >any way we could parameterize the existing GCCx toolchains to allow a
> > >different ASL compiler to be selected?
> > >
> 
> We are using GCC49 because this was the last GCC build for Windows as exe we could find.  We use these tools to build using GCC on Windows: https://releases.linaro.org/archive/14.09/components/toolchain/binaries/gcc-linaro-arm-none-eabi-4.9-2014.09_win32.zip
> I would love to use GCC5 if toolchain exes are readily available for Windows.

We can do better than that:
https://releases.linaro.org/components/toolchain/binaries/7.3-2018.05/arm-eabi/gcc-linaro-7.3.1-2018.05-i686-mingw32_arm-eabi.tar.xz
Should build with GCC5 profile.

/
    Leif