diff --git a/win/configure.ac b/win/configure.ac
new file mode 100644
index 0000000..b3c4e47
--- /dev/null
+++ b/win/configure.ac
@@ -0,0 +1,30 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_PREREQ([2.61])
+AC_INIT([tightvnc], [1.5.0a1], [http://www.tightvnc.com/bugs.html])
+AM_INIT_AUTOMAKE([-Wall foreign dist-bzip2])
+
+AC_SUBST([COMMON_DIR], ['$(top_srcdir)/../common'])
+
+AC_CONFIG_SUBDIRS([../common])
+
+dnl Checks for programs.
+AC_PROG_CC
+AC_PROG_CXX
+AC_PROG_LIBTOOL
+AC_LANG([C++])
+
+if test "$GCC" = yes; then
+  CFLAGS="$CFLAGS -Wall"
+fi
+if test "$GXX" = yes; then
+  CXXFLAGS="$CXXFLAGS -Wall"
+fi
+
+CPPFLAGS="$CPPFLAGS -DWINVER=0x0500 -D_WIN32_IE=0x0500"
+
+AC_PATH_XTRA
+
+AC_OUTPUT(Makefile
+         vncviewer/Makefile
+	 rfb_win32/Makefile
+)