@@ -12,10 +12,11 @@
 #include "config.h"
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <limits.h>
 #include <assert.h>
 
 #import "OFObject.h"
 #import "OFAutoreleasePool.h"
@@ -27,10 +28,14 @@
 # import <objc/runtime.h>
 #endif
 #ifdef OF_GNU_RUNTIME
 # import <objc/sarray.h>
 #endif
+
+#ifdef _WIN32
+# include <windows.h>
+#endif
 
 #ifdef OF_ATOMIC_OPS
 # import "atomic.h"
 #else
 # import "threading.h"
@@ -59,10 +64,12 @@
 #define PRE_IVAR ((struct pre_ivar*)((char*)self - PRE_IVAR_ALIGN))
 
 static struct {
 	Class isa;
 } alloc_failed_exception;
+
+size_t of_pagesize;
 
 #ifdef NEED_OBJC_SYNC_INIT
 extern BOOL objc_sync_init();
 #endif
 
@@ -103,10 +110,19 @@
 #endif
 
 #ifdef OF_APPLE_RUNTIME
 	objc_setEnumerationMutationHandler(enumeration_mutation_handler);
 #endif
+
+#ifndef _WIN32
+	if ((of_pagesize = sysconf(_SC_PAGESIZE)) < 1)
+		of_pagesize = 4096;
+#else
+	SYSTEM_INFO si;
+	GetSystemInfo(&si);
+	of_pagesize = si.dwPageSize;
+#endif
 }
 
 + (void)initialize
 {
 }