[NaCl SDK] nacl-mounts example.

native_client_sdk/src/libraries/utils/macros.h

Index: native_client_sdk/src/libraries/utils/macros.h
diff --git a/native_client_sdk/src/libraries/utils/macros.h b/native_client_sdk/src/libraries/utils/macros.h
index 97602b3538ebc1b02dee1a6be584afe295d4f80d..8731e255dd1ac3d30aa23744f562613201611fd3 100644
--- a/native_client_sdk/src/libraries/utils/macros.h
+++ b/native_client_sdk/src/libraries/utils/macros.h
@@ -25,8 +25,25 @@
 # define EXTERN_C_END    }
 #else
 # define EXTERN_C_BEGIN
-# define EXEERN_C_END
+# define EXTERN_C_END
 #endif  /* __cplusplus */
 
+/**
+ * Macros to help force linkage of symbols that otherwise would not be
+ * included.
+ *
+ * // In a source file that you want to force linkage (file scope):
+ * FORCE_LINK_THIS(myfilename);
+ *
+ * // In a source file that you are sure will be linked (file scope):
+ * FORCE_LINK_THAT(myfilename)
+ *
+ */
+#define FORCE_LINK_THIS(x) int force_link_##x = 0;
+#define FORCE_LINK_THAT(x) \
+  void force_link_function_##x() { \
+    extern int force_link_##x; \
+    force_link_##x = 1; \
+  }
 
 #endif  /* LIBRARIES_UTILS_MACROS_H_ */