Building LLVM and Clang 14 on Windows

gistfile1.txt

x Download Clang and LLVM source.
x Extract them to the same top level folder, so that they are side by side.
  c:\temp\clang-14.0.0.src
  c:\temp\llvm-14.0.0.src
x Generate VS LLVM solution, build release LLVM (for example within c:\temp\llvm-14.0.0.src\_build)
x For VS Clang solution, we need to set proper Cmake variables
  xx LLVM_DIR = c:\Temp\llvm-14.0.0.src\_build\lib\cmake\llvm
  xx LLVM_LIBRARY_DIR = c:\Temp\llvm-14.0.0.src\_build\Release\lib
  xx LLVM_MAIN_INCLUDE_DIR = c:\Temp\llvm-14.0.0.src\include
  xx LLVM_MAIN_SRC_DIR = C:\Temp\llvm-14.0.0.src ?? (possibly not necessary)
  xx LLVM_TABLEGEN_EXE = c:\Temp\llvm-14.0.0.src\_build\Release\bin/llvm-tblgen.exe
  xx LLVM_TOOLS_BINARY_DIR = c:\Temp\llvm-14.0.0.src\_build\Release\bin
  xx Repeated Cmake configure seems to run into a Cmake error for me (at least with clang 14 src).