diff --git a/libunwind/src/assembly.h b/libunwind/src/assembly.h
index 84c9d526f1d75..9c35b6050a2bf 100644
--- a/libunwind/src/assembly.h
+++ b/libunwind/src/assembly.h
@@ -254,6 +254,8 @@ aliasname:                                                                     \
 #define NO_EXEC_STACK_DIRECTIVE
 
 // clang-format on
+#elif defined(__wasm__)
+
 #else
 
 #error Unsupported target
diff --git a/libunwind/src/config.h b/libunwind/src/config.h
index f017403fa2234..73162995f9293 100644
--- a/libunwind/src/config.h
+++ b/libunwind/src/config.h
@@ -75,13 +75,14 @@
   #define _LIBUNWIND_EXPORT
   #define _LIBUNWIND_HIDDEN
 #else
-  #if !defined(__ELF__) && !defined(__MACH__) && !defined(_AIX)
-    #define _LIBUNWIND_EXPORT __declspec(dllexport)
-    #define _LIBUNWIND_HIDDEN
-  #else
-    #define _LIBUNWIND_EXPORT __attribute__((visibility("default")))
-    #define _LIBUNWIND_HIDDEN __attribute__((visibility("hidden")))
-  #endif
+#if !defined(__ELF__) && !defined(__MACH__) && !defined(_AIX) &&               \
+    !defined(__wasm__)
+#define _LIBUNWIND_EXPORT __declspec(dllexport)
+#define _LIBUNWIND_HIDDEN
+#else
+#define _LIBUNWIND_EXPORT __attribute__((visibility("default")))
+#define _LIBUNWIND_HIDDEN __attribute__((visibility("hidden")))
+#endif
 #endif
 
 #define STR(a) #a