diff -rupN --no-dereference jasper-version-2.0.16/src/appl/tmrdemo.c jasper-version-2.0.16-new/src/appl/tmrdemo.c
--- jasper-version-2.0.16/src/appl/tmrdemo.c	2019-03-12 19:04:35.000000000 +0100
+++ jasper-version-2.0.16-new/src/appl/tmrdemo.c	2019-10-04 22:32:39.793955661 +0200
@@ -1,4 +1,5 @@
 #include <jasper/jasper.h>
+#include <windows.h>
 
 int main(int argc, char **argv)
 {
@@ -43,7 +44,7 @@ int main(int argc, char **argv)
 	printf("zero time %.3f us\n", t * 1e6);
 
 	jas_tmr_start(&tmr);
-	sleep(1);
+	Sleep(1);
 	jas_tmr_stop(&tmr);
 	t = jas_tmr_get(&tmr);
 	printf("time delay %.8f s\n", t);