--- configure.in.orig	Thu Aug  4 15:16:15 2005
+++ configure.in	Thu Aug  4 15:18:50 2005
@@ -56,6 +56,8 @@
 dnl Check for FreeBSD twe include files...currently missing on 5.2, but should be there
 AC_CHECK_HEADERS([sys/tweio.h])
 AC_CHECK_HEADERS([sys/twereg.h])
+dnl Check for FreeBSD twa include files...
+AC_CHECK_HEADERS([sys/tw_osl_ioctl.h])
 
 dnl Checks for typedefs, structures, and compiler characteristics.