Updated the error message for missing dia sdk in build.cmd. Closes #2…

[OzieGamma]

…5856

[OzieGamma]

First PR failed to trigger bots/tests. #25858

[danmoseley]

Thanks @OzieGamma if you put Fixes #25858 in the topmost comment then when this is merge it will autoresolve.

We still support VS2015 according to that link -- didn't it have the DIA install bug? @weshaggard

[OzieGamma]

I installed VS2015 and the installer correctly installed the DIA SDK.

[danmoseley]

Sounds good to me but I don't know the history of this error @weshaggard OK w/ you?

[weshaggard]

Based on dotnet/coreclr#14948, I think the issue is that this isn't always available with VS2017 not VS2015. That said I'm not even sure if it is needed for corefx I think this might be left over from a copy in coreclr.

[danmoseley]

@mikem8361 have you any context on when the issue referenced in this error was fixed?

[OzieGamma]

The original message mentions coreclr as a fix (I changed it to the corefx documentation). Does the check need to be completely removed?

Changing the VS 2017 install does install the DIA SDK. I was missing it. So the check did catch that error. The error message just sent me down the wrong solution.

[mikem8361]

Sorry. No.

[danmoseley]

OK we thought about this enough. merged. thanks for the change @OzieGamma