Index: abi/include/abi/sysinfo.h
===================================================================
--- abi/include/abi/sysinfo.h	(revision f0378c6125b13b54a641dc5b1c1bd177020d4498)
+++ abi/include/abi/sysinfo.h	(revision d76862d0a73201d8cd706af4402d846671cb29c7)
@@ -37,4 +37,5 @@
 #define _ABI_SYSINFO_H_
 
+#include <_bits/size_t.h>
 #include <stdbool.h>
 #include <abi/proc/task.h>