--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h
@@ -17,6 +17,9 @@
 
 #include <linux/types.h>
 #include <linux/ioctl.h>
+#if !defined(__GLIBC__)
+#include <linux/stddef.h>
+#endif
 #include <asm/byteorder.h>
 
 /*