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

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@@ -12,6 +12,7 @@
 #ifndef __LIBUNWIND_EXT__
 #define __LIBUNWIND_EXT__
 
+#ifndef __wasm__
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trcrsired wrote:

The problem is that __WASM_EXCEPTIONS__ macro is not defined by clang, so using any other the header without __wasm__ will trigger ODR violation. Remote unwinding is not a thing for wasm, so i do not see what's wrong here

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