diff --git a/headers/posix/null.h b/headers/posix/null.h
new file mode 100644
index 0000000000..314039bfcb
--- /dev/null
+++ b/headers/posix/null.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2002 Marcus Overhagen
+ * All rights reserved.
+ *
+ * Distributed under the terms of the MIT license
+ */
+#ifndef _NULL_H
+#define _NULL_H
+
+#ifndef NULL
+	#define NULL 0
+#endif
+
+#endif
diff --git a/headers/posix/size_t.h b/headers/posix/size_t.h
new file mode 100644
index 0000000000..bcba1e9d44
--- /dev/null
+++ b/headers/posix/size_t.h
@@ -0,0 +1,20 @@
+#ifndef _SIZE_T_H_
+#define _SIZE_T_H_
+
+/*
+ *    XXX serious hack that doesn't really solve the problem.
+ *       As of right now, some versions of the toolchain expect size_t to
+ *       be unsigned long (newer ones than 2.95.2 and beos), and the older
+ *       ones need it to be unsigned int. It's an actual failure when 
+ *       operator new is declared. This will have to be resolved in the future. 
+ */
+
+#ifdef __BEOS__
+typedef unsigned long       size_t;
+typedef signed long         ssize_t;
+#else
+typedef unsigned int        size_t;
+typedef signed int          ssize_t;
+#endif
+
+#endif /* _SIZE_T_H_ */
diff --git a/headers/posix/wchar.h b/headers/posix/wchar.h
new file mode 100644
index 0000000000..93042b0224
--- /dev/null
+++ b/headers/posix/wchar.h
@@ -0,0 +1,8 @@
+/*
+ * Copyright (C) 2002 Marcus Overhagen
+ * All rights reserved.
+ *
+ * Distributed under the terms of the MIT license
+ */
+
+#include <wchar_t.h>
diff --git a/headers/posix/wchar_t.h b/headers/posix/wchar_t.h
new file mode 100644
index 0000000000..e3849542ab
--- /dev/null
+++ b/headers/posix/wchar_t.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright (C) 2002 Marcus Overhagen
+ * All rights reserved.
+ *
+ * Distributed under the terms of the MIT license
+ */
+#ifndef _WCHAR_T_H
+#define _WCHAR_T_H
+
+typedef unsigned short wchar_t;
+
+#endif