
The `_LIBCPP_DISABLE_AVAILABILITY` macro was removed in afae1a5f32bb as an intended no-op. It turns out that some projects are making use of that macro to work around a Clang bug with availability annotations that still exists: https://github.com/llvm/llvm-project/issues/134151. Since that Clang bug still hasn't been fixed, I feel that we must sill honor that unfortunate macro until we've figured out how to get rid of it without breaking code. (cherry picked from commit 25fc52e655fb4bfd3bb89948d5cbfe011e1b8984)
The LLVM Compiler Infrastructure
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
The LLVM project has multiple components. The core of the project is itself called "LLVM". This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.
C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.
Other components include: the libc++ C++ standard library, the LLD linker, and more.
Getting the Source Code and Building LLVM
Consult the Getting Started with LLVM page for information on building and running LLVM.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
Getting in touch
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