Reverts llvm/llvm-project#95419 and Reland #95358. This PR is full of temporal fixes. After a discussion with @lntue, it is better to avoid further changes to the cmake infrastructure for now as a rework to the cmake utilities will be landed in the future.
LLVM libc ========= This directory and its subdirectories contain source code for llvm-libc, a retargetable implementation of the C standard library. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.