--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -6,6 +6,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#if !defined(__GLIBC__)
+#include <linux/stddef.h>
+#endif
+
 #define unlikely(cond) (cond)
 #include <asm/insn.h>
 #include "../../../arch/x86/lib/inat.c"