[compiler-rt] [libcxx] [libcxxabi] [libunwind] [libunwind][libcxx][libcxxabi][compiler-rt-builtins] Fix Exception Handling build for wasm (PR #79667)

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@@ -10,6 +10,7 @@
 #ifndef LIBUNWIND_CET_UNWIND_H
 #define LIBUNWIND_CET_UNWIND_H
 
+#ifndef __wasm__
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EricWF wrote:

Again, I don't think `#ifdef`-ing out entire headers is the best way to do this, or is even necessary. 

https://github.com/llvm/llvm-project/pull/79667