The proxy header errno_macros.h should include relative to `libc/` but it was instead including relative to `libc/include/`. This patch fixes this by adding the `include` to the paths.
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.