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Message-ID:	<8D00C32549556B4E977F81DBC24E985D4100C2@crtsmail1.technol_exch.corp.riotinto.org>
From:	"Billinghurst, David (CRTS)" <David DOT Billinghurst AT riotinto DOT com>
To:	"'wdkirby AT ix DOT netcom DOT com'" <wdkirby AT ix DOT netcom DOT com>
Cc:	"'bug-octave AT bevo DOT che DOT wisc DOT edu'" <bug-octave AT bevo DOT che DOT wisc DOT edu>,
	"'cygwin AT cygwin DOT com'" <cygwin AT cygwin DOT com>
Subject:	Re: Building Octave-2.1.35 using Cygwin-1.3.3-2
Date:	Tue, 4 Dec 2001 11:38:54 -0000
MIME-Version:	1.0
X-Mailer:	Internet Mail Service (5.5.2653.19)

You wrote that you had problems compiling octave-2.1.35 on cygwin, due to a
missing definition of _rl_clear_screen.

The problem is that _rl_clear_screen is "private" and is not exported in
cygreadline.dll.  As you and I both found out, simply removing the leading
underscore is the "Wrong Thing".

There are a number of solutions to this problem, including:
a) building octave without readline support,
b) building your own dll with this symbol exported
c) using the static libreadline.a
d) finding a way to use rl_clear_screen
e) getting someone else to do (b) for you

Option (a) is easy as there is a configure option for this.

Option (c) is pretty easy.  
 Configure octave with "CFLAGS='-DREADLINE_STATIC -O'
 Change -lreadline to /usr/lib/libreadline.a in Makeconf
 make 

The rest are left as an exercise.

+++++++++++++++++++++++++++++++++++++++++
(Mr) David Billinghurst
Comalco Research Centre
PO Box 316, Thomastown, Vic, Australia, 3074
Phone:	+61 3 9469 0642
FAX:		+61 3 9462 2700
Email:	David DOT Billinghurst AT riotinto DOT com


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