diff --git a/sdk/xtdk/xtcompat.h b/sdk/xtdk/xtcompat.h
index 900618e..689cfa0 100644
--- a/sdk/xtdk/xtcompat.h
+++ b/sdk/xtdk/xtcompat.h
@@ -20,6 +20,11 @@
     #define XTCLINK         extern "C"
     #define XTSYMBOL(Name)  __asm__(Name)
 
+    /* C++ attributes */
+    #define MUSTCHECK       [[nodiscard]]
+    #define NORETURN        [[noreturn]]
+    #define UNUSED          [[maybe_unused]]
+
     /* C++ boolean type */
     typedef bool BOOLEAN, *PBOOLEAN;
     #define TRUE true
@@ -34,6 +39,11 @@
     #define XTCLINK
     #define XTSYMBOL(Name)
 
+    /* C attributes */
+    #define MUSTCHECK       __attribute__((warn_unused_result))
+    #define NORETURN        __attribute__((noreturn))
+    #define UNUSED          __attribute__((unused))
+
     /* C boolean type */
     typedef enum _BOOLEAN
     {