diff --git a/w2c2/c.c b/w2c2/c.c
index c3fbcff..d470bbf 100644
--- a/w2c2/c.c
+++ b/w2c2/c.c
@@ -4656,6 +4656,8 @@ wasmCWriteModuleHeader(
     fprintf(file, "#ifndef %s_H\n", moduleName);
     fprintf(file, "#define %s_H\n\n", moduleName);
 
+    fputs("#ifdef __cplusplus\nextern \"C\" {\n#endif\n\n", file);
+
     wasmCWriteBaseInclude(file);
     wasmCWriteModuleDeclarations(file, module, moduleName, pretty, debug, multipleModules);
     fprintf(
@@ -4671,6 +4673,8 @@ wasmCWriteModuleHeader(
         moduleName
     );
 
+    fputs("#ifdef __cplusplus\n}\n#endif\n\n", file);
+
     fprintf(file, "#endif /* %s_H */\n\n", moduleName);
 
     if (fclose(file) != 0) {
diff --git a/w2c2/w2c2_base.h b/w2c2/w2c2_base.h
index 286bdf5..2567838 100644
--- a/w2c2/w2c2_base.h
+++ b/w2c2/w2c2_base.h
@@ -11,6 +11,10 @@
 
 #include <assert.h>
 
+#ifdef __cplusplus
+extern "C" {
+#else
+
 #ifndef __bool_true_false_are_defined
 typedef enum bool {
     false = 0,
@@ -18,6 +22,8 @@ typedef enum bool {
 } bool;
 #endif
 
+#endif
+
 typedef unsigned char U8;
 typedef signed char I8;
 
@@ -903,4 +909,8 @@ wasmTableFree(
 
 #define TF(table, index, t) ((t)((table).data[index]))
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* W2C2_BASE_H */
diff --git a/wasi/wasi.h b/wasi/wasi.h
index ea17181..cfa35fd 100644
--- a/wasi/wasi.h
+++ b/wasi/wasi.h
@@ -24,6 +24,10 @@ typedef long ssize_t;
 #include <dirent.h>
 #endif
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct WasiFileDescriptor {
     int fd;
     DIR* dir;
@@ -637,4 +641,8 @@ wasiFromNativePath(
     char *path
 );
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* W2C2_WASI_H */
diff --git a/wasi/win32.h b/wasi/win32.h
index 0bb3218..528e5f4 100644
--- a/wasi/win32.h
+++ b/wasi/win32.h
@@ -4,6 +4,10 @@
 #include <windows.h>
 #include <errno.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct dirent {
     long d_ino;
     unsigned short d_reclen;
@@ -35,4 +39,8 @@ struct DIR {
     HANDLE handle;
 };
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* W2C2_WASI_WIN32_H */