Bug in autoconf version 2.50

[Erik de Castro Lopo]

address@hidden > autoconf --version
autoconf (GNU Autoconf) 2.50
Written by David J. MacKenzie.

Copyright 1992, 1993, 1994, 1996, 1999, 2000, 2001
Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


address@hidden > autoconf 
configure.in:66: error: undefine: undefined: 
configure.in:66: the top level


Line 66 of my configure.in file is :

        AC_MSG_WARN([*** undefine CAN_READ_XXX in src/config.h.      ])

Changing that line to this:

        AC_MSG_WARN([*** un-define CAN_READ_XXX in src/config.h.     ])

fixes the error message and everything works.

It looks like autoconf if operating on 'undefine' even though it is part of
a text message.

Hope this helps,
Erik