# Compiler Support¶

LLVM libc compiles from both Clang and GCC but for maximum performance we recommand using Clang.

Indeed, some memory function implementations rely on compiler intrinsics that are not currently available in GCC. As such we cannot guarantee optimal performance for these functions.

For platforms where only GCC is natively available but maximum performance is required it is possible to bootstrap Clang with GCC and then use Clang to build the ‘libc” project.

## Minimum supported versions¶

• Clang 11
• GCC 12.2`