How to specify MSVC version when compiling coreclr on Windows

[Liangjia0411]

I'm trying to compile the CoreCLR but need to use a specific version of the MSVC compiler.

1.Does the CoreCLR build system support specifying the MSVC compiler version?
2.If supported, what parameter or environment variable should be used?

[jkotas]

SkipVCEnvInit environment variable can be used to skip the default MSVC environment setup:

runtime/eng/native/init-vs-env.cmd

Lines 72 to 73 in d1770cc

	:: We can set SkipVCEnvInit to skip setting up the MSVC environment from VS and instead assume that the current environment is set up correctly.
	:: This is very useful for testing with new MSVC versions that aren't in a VS build yet.

.

You should be able to setup MSVC build environment that points to a specific MSVC version before the build, and then set SkipVCEnvInit=1 to build with it.