diff -ru gpstrans-0.39.orig/Makefile gpstrans-0.39/Makefile
--- gpstrans-0.39.orig/Makefile	2003-05-21 02:27:14.000000000 +0900
+++ gpstrans-0.39/Makefile	2003-05-21 02:26:43.000000000 +0900
@@ -12,7 +12,7 @@
 
 clean:
 	@echo "Cleaning all in ./"
-	@rm -f src/core src/gpstrans src/*.o src/*.bak src/*~ src/#*#
+	@rm -f src/core src/gpstrans src/*.o src/*.bak src/*~ src/#*# src/*.exe
 	@echo "Cleaning all in ./gps"
 	@(cd src/gps  ; make clean)
 	@echo "Cleaning all in ./grid"
diff -ru gpstrans-0.39.orig/src/Makefile gpstrans-0.39/src/Makefile
--- gpstrans-0.39.orig/src/Makefile	2001-02-21 03:35:43.000000000 +0900
+++ gpstrans-0.39/src/Makefile	2003-05-21 02:23:24.000000000 +0900
@@ -11,7 +11,7 @@
 
 # use -DSUNOS41 for SunOS 4.1.x
 # usr -DHPUX    for HPUX
-CFLAGS	= -Wall -pedantic -g -O3 -D__LINUX__
+CFLAGS	= -Wall -pedantic -g -O3 -D__CYGWIN__
 LDFLAGS	= -lm
 
 
diff -ru gpstrans-0.39.orig/src/getline/Makefile gpstrans-0.39/src/getline/Makefile
--- gpstrans-0.39.orig/src/getline/Makefile	1995-05-30 05:57:57.000000000 +0900
+++ gpstrans-0.39/src/getline/Makefile	2003-05-21 02:23:24.000000000 +0900
@@ -1,4 +1,4 @@
-CC     = cc
+CC     = gcc
 #CFLAGS = -Wall -DPOSIX
 CFLAGS = -DPOSIX
 LDFLAGS= 
diff -ru gpstrans-0.39.orig/src/gps/Makefile gpstrans-0.39/src/gps/Makefile
--- gpstrans-0.39.orig/src/gps/Makefile	1996-11-21 03:18:10.000000000 +0900
+++ gpstrans-0.39/src/gps/Makefile	2003-05-21 02:23:24.000000000 +0900
@@ -9,7 +9,7 @@
 ##############################################################################
 CC	= gcc
 INCLUDES=-I../include
-CFLAGS	= -g -D__LINUX__
+CFLAGS	= -g -D__CIGWIN__
 
 
 OFILES	= sendgpsinfo.o dms.o datum.o calendar.o gpsmessage.o garmincomm.o  \
diff -ru gpstrans-0.39.orig/src/gps/garminserial.c gpstrans-0.39/src/gps/garminserial.c
--- gpstrans-0.39.orig/src/gps/garminserial.c	2003-05-21 02:27:14.000000000 +0900
+++ gpstrans-0.39/src/gps/garminserial.c	2003-05-21 02:23:24.000000000 +0900
@@ -127,7 +127,11 @@
 {
   int count;
 
+#ifdef __CYGWIN__
+  ioctl (ttyfp, TIOCINQ, &count);
+#else
   ioctl (ttyfp, FIONREAD, &count);
+#endif
   return (long) count;
 }
 
diff -ru gpstrans-0.39.orig/src/gps/getgpsinfo.c gpstrans-0.39/src/gps/getgpsinfo.c
--- gpstrans-0.39.orig/src/gps/getgpsinfo.c	2003-05-21 02:27:14.000000000 +0900
+++ gpstrans-0.39/src/gps/getgpsinfo.c	2003-05-21 02:23:24.000000000 +0900
@@ -69,6 +69,14 @@
 static float tofloat (unsigned char *p);
 static short toshort (unsigned char *p);
 
+#ifdef __CYGWIN__
+#define timelocal mktime
+time_t timegm(struct tm *tm) {
+  time_t t_temp=mktime(tm);
+  struct tm *tm_temp=gmtime(&t_temp);
+  return (t_temp + (t_temp - mktime(tm_temp)));
+}
+#endif
 
 
 /****************************************************************************/
@@ -235,26 +243,10 @@
       return (0);
     }
 
-  if ((gPrefs.model == 'y'))
-    {
-      /* send command and receive package */
-      sendGPSMessage (tim1, 4);
-      getGPSMessage ();
-      getGPSMessage ();
-
-    }
-  else
-    {
-      /* send command and receive package */
-      sendGPSMessage (tim1, 4);
-      getGPSMessage ();		/* this is the ACK-package */
-      getGPSMessage ();		/* This is of the unknown type 09: leap seconds ? */
-      getGPSMessage ();		/* This is ACK again */
-      getGPSMessage ();		/* Stuff */
-    }
-
-
-
+  /* send command and receive package */
+  sendGPSMessage (tim1, 4);
+  getGPSMessage ();
+  getGPSMessage ();
 
   /* close serial device */
   serialClose ();
diff -ru gpstrans-0.39.orig/src/include/defs.h gpstrans-0.39/src/include/defs.h
--- gpstrans-0.39.orig/src/include/defs.h	2003-05-21 02:27:14.000000000 +0900
+++ gpstrans-0.39/src/include/defs.h	2003-05-21 02:26:28.000000000 +0900
@@ -24,6 +24,9 @@
 
 #ifdef __FreeBSD__
 #define DefaultServerDevice  "/dev/cuaa1"
+#endif
+#ifdef __CYGWIN__
+#define DefaultServerDevice  "/dev/com1"
 #else
 #define DefaultServerDevice  "/dev/ttyS1"
 #endif
diff -ru gpstrans-0.39.orig/src/main.c gpstrans-0.39/src/main.c
--- gpstrans-0.39.orig/src/main.c	2003-05-21 02:27:14.000000000 +0900
+++ gpstrans-0.39/src/main.c	2003-05-21 02:23:24.000000000 +0900
@@ -261,6 +261,10 @@
   /* if set-option and uid=root then adjust local time */
   if (dowhat == 's')
     {
+#ifdef __CYGWIN__
+      fprintf (stderr, "Sorry, Time adjustment is not supported by this OS (Cygwin).\n");
+      exit (0);
+#else
       if (getuid () == 0)
 	{
 	  if (diffis <= 7200)
@@ -279,8 +283,8 @@
 	}
       else
 	fprintf (stderr, "\nSorry, only root can set the time.\n");
+#endif
     }
-
   exit (0);
 }
 
diff -ru gpstrans-0.39.orig/src/util.c gpstrans-0.39/src/util.c
--- gpstrans-0.39.orig/src/util.c	2001-06-17 06:15:30.000000000 +0900
+++ gpstrans-0.39/src/util.c	2003-05-21 02:23:24.000000000 +0900
@@ -30,6 +30,9 @@
 #ifdef __LINUX__
 #include "time.h"
 #endif
+#ifdef __CYGWIN__
+#include "time.h"
+#endif
 
 /* define global variables */
 char gMessageStr[255];