--- gforth/engine/main.c	2007/05/15 20:11:23	1.181
+++ gforth/engine/main.c	2007/06/07 20:57:13	1.182
@@ -191,6 +191,9 @@ int optind = 1;
 #ifndef MAP_NORESERVE
 #define MAP_NORESERVE 0
 #endif
+#ifdef __CYGWIN__
+#define MAP_NORESERVE 0
+#endif
 static int map_noreserve=MAP_NORESERVE;
 
 #define CODE_BLOCK_SIZE (512*1024) /* !! overflow handling for -native */