problem compiling ruby1.8 with borland c 5.5

[KONTRA Gergely]

Hi!

I've problem compiling ruby-preview 1.8.0-preview3 on win98.
After doing bcc32\configure.bat, when I type make, it simply doesn't
find the header files.
But I've set up the lib and include environment variables BEFORE
configuring:
----------[ other variables deleted ]----------
D:\tmp\ruby-1.8.0>set
PATH=C:\WINDOWS;C:\WINDOWS\COMMAND;C:\PROGRA~1\VIRUSB~1\BIN;D:\BORLAND\BCC55\BIN
LIB=d:\borland\bcc55\lib
INCLUDE=d:\borland\bcc55\include
-----------------------------------------------

The output of make is the following:

MAKE Version 5.2 Copyright (c) 1987, 2000 Borland
Borlandbcc32 -q -O -5 -w- -DRUBY_EXPORT -I. -I. -I./ -I./missing -c
.\array.c
.\array.c:
Error E2209 .\win32/win32.h 25: Unable to open include file 'windows.h'

Gergo