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-rw-r--r--src/vppinfra/clib.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/vppinfra/clib.h b/src/vppinfra/clib.h
index 05af8fe7168..4629a7defb8 100644
--- a/src/vppinfra/clib.h
+++ b/src/vppinfra/clib.h
@@ -120,6 +120,7 @@
/* Hints to compiler about hot/cold code. */
#define PREDICT_FALSE(x) __builtin_expect((x),0)
#define PREDICT_TRUE(x) __builtin_expect((x),1)
+#define COMPILE_TIME_CONST(x) __builtin_constant_p (x)
/*
* Compiler barrier