diff --git a/include/lib/libc/stdarg.h b/include/lib/libc/stdarg.h
new file mode 100644
index 0000000..e260b9b
--- /dev/null
+++ b/include/lib/libc/stdarg.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2012-2017 Roberto E. Vargas Caballero
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef STDARG_H
+#define STDARG_H
+
+#define va_list __builtin_va_list
+#define va_start(ap, last) __builtin_va_start(ap, last)
+#define va_end(ap) __builtin_va_end(ap)
+#define va_copy(to, from) __builtin_va_copy(to, from)
+#define va_arg(to, type) __builtin_va_arg(to, type)
+
+#endif /* STDARG_H */