This gets Windows ARM64 to compile with clang-cl, which gives up to 40% performance improvements in certain scenes rendered with cycles, compared to MSVC. This is all tested using LLVM 18.1.8 and a VS2022 `vcvarsall` window. Subsequent PRs with various lib version updates, etc to go in at a later point. Pull Request: https://projects.blender.org/blender/blender/pulls/124182
Project: LZMA SDK URL: https://www.7-zip.org/sdk.html License: Public Domain Upstream version: 23.01 Local modifications: * Update LzFind.c to find the correct NEON header when using clang-cl + Windows ARM64 - Took only files needed for Blender: C source for raw LZMA1 encoder/decoder. - CMakeLists.txt is made for Blender codebase