Search notes:

vcvarsall.bat

vcvarsall.bat needs to be called like soc

vcvarsall.bat [arch] [platform_type] [winsdk_version] [-vcvars_ver=vc_version] [-vcvars_spectre_libs=spectre_mode]

arch is one of (as shown above)

platform_type can be set to uwp for Universal Windows Platform applications.

The winsdk_version is

a full windows 10 SDK number (such as 10.0.10240.0 (10240 being the build number) see Windows versions)
8.1 (for the Windows 8.1 SDK)

The -vcvars_ver apparently specifies the VC tool set:

spectre_mode is either

TODO

How does vcvarsall.bat relate to VsDevCmd.bat?