Error message when VS 2015 build tools exist but not the SDK needs to be better

f00b814
Opened by Brian Anderson at 2020-06-11 18:02:22

Today on Widows we tell users to install the MSVC 2015 build tools and the Windows SDK. If they install the build tools but not the Windows SDK they just get a mysterious linker error. It would be preferable to detect this situation and print a purpose-specific error.