cvs diff -u port.c 
Index: port.c
===================================================================
RCS file: /home/wine/wine/library/port.c,v
retrieving revision 1.29
diff -u -r1.29 port.c
--- port.c	14 May 2002 23:18:24 -0000	1.29
+++ port.c	15 May 2002 21:06:25 -0000
@@ -135,6 +135,8 @@
 {
 # ifdef __svr4__
     return sysconf(_SC_PAGESIZE);
+#elif defined(_WINDOWS)
+#define getpagesize() 4096
 # else
 #  error Cannot get the page size on this platform
 # endif