--- libev/ev.h	2019/07/02 06:07:54	1.195
+++ libev/ev.h	2019/07/11 04:35:48	1.196
@@ -151,7 +151,10 @@
 
 /*****************************************************************************/
 
-typedef double ev_tstamp;
+#ifndef EV_TSTAMP_T
+# define EV_TSTAMP_T double
+#endif
+typedef EV_TSTAMP_T ev_tstamp;
 
 #include <string.h> /* for memmove */