--- Libc/Libc-262/include/ulimit.h
+++ Libc/Libc-320/include/ulimit.h
@@ -4,6 +4,10 @@
 #define UL_GETFSIZE 1
 #define UL_SETFSIZE 2
 
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
 long int ulimit(int, ...);
+__END_DECLS
 
 #endif /* _ULIMIT_H */