[all-commits] [llvm/llvm-project] ec947f: [clang-repl] Fix undefined lld::wasm::link symbol ...

[Anutosh Bhat via All-commits]

  Branch: refs/heads/release/19.x
  Home:   https://github.com/llvm/llvm-project
  Commit: ec947f9d3315bd6654709b143ed4b5b98899524e
      https://github.com/llvm/llvm-project/commit/ec947f9d3315bd6654709b143ed4b5b98899524e
  Author: Anutosh Bhat <87052487+anutosh491 at users.noreply.github.com>
  Date:   2024-11-15 (Fri, 15 Nov 2024)

  Changed paths:
    M clang/lib/Interpreter/CMakeLists.txt

  Log Message:
  -----------
  [clang-repl] Fix undefined lld::wasm::link symbol while building clangInterpreter for wasm (#113446)

While building llvm (clang, lld) for wasm using emscripten (recipe
hosted on emscripten-forge
https://github.com/emscripten-forge/recipes/tree/main/recipes/recipes_emscripten/llvm)
I ended up with this error
```
 │ │ wasm-ld: error: ../../../../lib/libclangInterpreter.a(Wasm.cpp.o): undefined symbol: lld::wasm::link(llvm::ArrayRef<char const*>, llvm::raw_ostream&, llvm:
 │ │ :raw_ostream&, bool, bool)
 ```
 This is due to the link function here
 https://github.com/llvm/llvm-project/blob/a4819bd46d8baebc3aaa8b38f78065de33593199/clang/lib/Interpreter/Wasm.cpp#L25-L30

 This was added through this PR (https://github.com/llvm/llvm-project/pull/86402) as an attempt to support running clang-repl and executing C++ code interactively inside a Javascript engine using WebAssembly when built with Emscripten.

 The definition for link is present in lldwasm and when building for the emscripten platform we should be linking against it.

(cherry picked from commit 075581f34035c01659cc883d0d69336c279ef0d5)



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