[PATCH] D85998: Add clang-cl "vctoolsdir" option to specify the location of the msvc toolchain

[Zachary Henkel via Phabricator via cfe-commits]

zahen added a comment.

The build system strives to be deterministic so all file probes need to be accounted for; environment variables are also problematic.  Our builds deliberately don't run from a Visual Studio command prompt.  In addition, we'd like to avoid coupling clang tools that don't perform codegen to link.exe.  We do use -fmsc-version= during the build.


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  https://reviews.llvm.org/D85998/new/

https://reviews.llvm.org/D85998