diff -ruN -x Makefile -ruN screen-4.0.2.orig/misc.c screen-4.0.2/misc.c
--- screen-4.0.2.orig/misc.c	2003-12-05 05:45:41.000000000 -0800
+++ screen-4.0.2/misc.c	2004-01-14 22:47:00.265625000 -0800
@@ -613,7 +613,7 @@
    */
 # endif /* NEEDSETENV */
 #else /* USESETENV */
-# if defined(linux) || defined(__convex__) || (BSD >= 199103)
+# if defined(linux) || defined(__convex__) || (BSD >= 199103) || defined(__CYGWIN__)
   setenv(var, value, 1);
 # else
   setenv(var, value);
diff -ruN -x Makefile -ruN screen-4.0.2.orig/pty.c screen-4.0.2/pty.c
--- screen-4.0.2.orig/pty.c	2003-09-08 07:26:18.000000000 -0700
+++ screen-4.0.2/pty.c	2004-01-14 22:52:49.812500000 -0800
@@ -34,7 +34,7 @@
 #endif
 
 /* for solaris 2.1, Unixware (SVR4.2) and possibly others */
-#ifdef HAVE_SVR4_PTYS
+#if defined(HAVE_SVR4_PTYS) && !defined(__CYGWIN__)
 # include <sys/stropts.h>
 #endif
 
diff -ruN -x Makefile -ruN screen-4.0.2.orig/utmp.c screen-4.0.2/utmp.c
--- screen-4.0.2.orig/utmp.c	2003-09-08 07:27:17.000000000 -0700
+++ screen-4.0.2/utmp.c	2004-01-14 22:52:05.390625000 -0800
@@ -102,7 +102,7 @@
 #endif
 
 
-# if defined(GETUTENT) && (!defined(SVR4) || defined(__hpux))
+# if defined(GETUTENT) && (!defined(SVR4) || defined(__hpux)) && ! defined(__CYGWIN__)
 #  if defined(hpux) /* cruel hpux release 8.0 */
 #   define pututline _pututline
 #  endif /* hpux */
@@ -581,7 +581,11 @@
     }
 #endif
   setutent();
+#ifndef __CYGWIN__
   return pututline(u) != 0;
+#else
+  return 1;
+#endif
 }
 
 static void
@@ -589,7 +593,7 @@
 struct utmp *u;
 {
   u->ut_type = DEAD_PROCESS;
-#if !defined(linux) || defined(EMPTY)
+#if (!defined(linux) || defined(EMPTY)) && !defined(__CYGWIN__)
   u->ut_exit.e_termination = 0;
   u->ut_exit.e_exit = 0;
 #endif