this is actually available with msvc, in sys/time.h

include/starpu_config.h.in

@@ -109,14 +109,6 @@ typedef ssize_t starpu_ssize_t;
 #  define __starpu_inline __inline__
 #endif
 
-#ifdef _MSC_VER
-struct timespec
-{
-  time_t  tv_sec;  /* Seconds */
-  long    tv_nsec; /* Nanoseconds */
-};
-#endif
-
 #undef STARPU_QUICK_CHECK
 #undef STARPU_USE_DRAND48
 #undef STARPU_USE_ERAND48_R