[Scons-users] scons: windows architecture mapping tables

[Bill Deegan]

Moving conversation to dev mailing list as that's the appropriate forum.
-Bill

On Tue, May 7, 2019 at 7:36 AM Mats Wichmann <mats at wichmann.us> wrote:

>
> By accident I again ended up seeing the architecture tables for
> Windows/Visual Studio.  I had made some changes in the past guessing at
> support for newer things (arm appeared a while ago, and 64-bit arm in, I
> think VS2017).  They are out of sync, but I don't really know what I'm
> doing here, and don't know if that actually breaks anything. I'm just
> here from inspection, not through chasing a known problem. Hoping
> someone else knows this stuff better and has comments.
>
> There are actually three tables (unless there are more I have missed).
>
>
> src/engine/SCons/Tool/MSCommon/arch.py  and
> src/engine/SCons/Platform/win32.py
>
> have identically named facilities, and ArchDefinition class and a
> SupportedArchitectureList and SupportedArchitectureMap
>
> not sure it's a great idea for there to be two copies of the same thing,
> as they can get out of sync - in fact, they are out of sync. Both use
> "x86_64" as the name for that architecture; the former includes "arm",
> the latter does not; neither includes "aarch64" for 64-bit ARM.
>
> src/engine/SCons/Tool/MSCommon/vc.py
>
> has an _ARCH_TO_CANONCIAL dict which defines the canoncial name "amd64"
> instead of "x86_64" - I know this is what Microsoft likes to call it;
> does it matter that the other two use "x86_64", or is that the "scons
> name" for the architecture?   That dict does define both arm and aarch64.
>
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