[libcxx] [libcxxabi] [libunwind] [llvm] libcxx: enable tests against wasi-libc (PR #215384)

[Nikolas Klauser via llvm-commits]

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@@ -71,17 +71,16 @@
 #endif
 
 #if defined(_LIBUNWIND_HIDE_SYMBOLS)
-  // The CMake file passes -fvisibility=hidden to control ELF/Mach-O visibility.
-  #define _LIBUNWIND_EXPORT
-  #define _LIBUNWIND_HIDDEN
+// The CMake file passes -fvisibility=hidden to control ELF/Mach-O visibility.
+#define _LIBUNWIND_EXPORT
+#define _LIBUNWIND_HIDDEN
+#elif !defined(__ELF__) && !defined(__MACH__) && !defined(_AIX) &&             \
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philnik777 wrote:

This seems like it should really just be `defined(_WIN32)`.

https://github.com/llvm/llvm-project/pull/215384