DevIos IDE compiles C and C++ in the browser with these, unchanged unless said:

- clang 22.1.0 and wasm-ld, built for WebAssembly by YoWASP (@yowasp/clang@22.0.0-git20542-10,
  https://github.com/YoWASP/clang): Apache License v2.0 with LLVM Exceptions
  (licenses/LLVM-LICENSE.txt); the YoWASP build scripts are under licenses/yowasp-clang-LICENSE.txt
  and its JavaScript runtime under the ISC licence (licenses/yowasp-runtime-LICENSE.txt).
- The wasm32-wasip1 sysroot of wasi-sdk 33.0+m (https://github.com/WebAssembly/wasi-sdk):
  libc++, libc++abi and libunwind (Apache License v2.0 with LLVM Exceptions,
  licenses/LLVM-LICENSE.txt) and wasi-libc (licenses/wasi-libc-LICENSE.txt,
  licenses/wasi-libc-LICENSE-MIT.txt, with musl under licenses/musl-COPYRIGHT.txt and
  cloudlibc under licenses/cloudlibc-LICENSE.txt).
- clang's own headers and runtime library from the YoWASP package.

The sysroot is rearranged into the layout clang expects, with the exceptions build of the C++
libraries in place of the other. std.hpp.pch is clang's precompiled form of std.hpp.