--- 1/arch/linux/i386/platform_specific.h
+++ 1/arch/linux/i386/platform_specific.h
@@ -2,6 +2,7 @@
 #define PLATFORM_SPECIFIC_H
 
 #include <asm/ptrace.h>
+#include <sys/types.h>
 #include <sys/syscall.h>
 #include <sys/resource.h>