From bug-request at octave dot org Tue Jan 25 14:18:48 2005
Subject: Re: Serious memory leak in octave (this may be a duplicate bug 	report)
From: Dan Nessett <dnessett at comcast dot net>
To: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
CC: Per Persson <persquare at mac dot com>, Martin Costabel <costabel@wanadoo.fr>,         <bug@octave.org>
Date: Tue, 25 Jan 2005 12:12:08 -0800

On 1/25/05 11:34 AM, "John W. Eaton" <jwe at bevo dot che dot wisc dot edu> wrote:

> On 25-Jan-2005, Dan Nessett <dnessett at comcast dot net> wrote:
> 
> | I can't seem to find the right combination of configure options to get a
> | full version of octave built with libncurses coming from /usr/lib. I have
> | tried:
> | 
> | ./configure --enable-shared --enable-dl --disable-static
> | LDFLAGS="/usr/lib/libncurses.5.dylib /sw/lib/libreadline.4.dylib
> | /sw/lib/libhdf5.0.dylib" FLIBS=/sw/lib/libg2c.a
> | 
> | ./configure --enable-shared --enable-dl --disable-static
> | LDFLAGS="/usr/lib/libncurses.5.dylib /sw/lib/libreadline.4.dylib
> | /sw/lib/libhdf5.0.dylib -I/sw/include/readline.h" FLIBS=/sw/lib/libg2c.a
> | 
> | and
> | 
> | ./configure --enable-shared --enable-dl --disable-static
> | LDFLAGS="/usr/lib/libncurses.5.dylib /sw/lib/libreadline.a
> | /sw/lib/libhdf5.0.dylib -I/sw/include/readline.h" FLIBS=/sw/lib/libg2c.a
> | 
> | All of these result in the following error during the configure phase:
> | 
> | checking for rl_set_keyboard_input_timeout in -lreadline... no
> | configure: WARNING: I need GNU Readline 4.2 or later
> | configure: error: this is fatal unless you specify --disable-readline
> | 
> | I would like to have a full workaround before I report the bug to Fink. Any
> | suggestions?
> 
> You should look in config.log to see why the readline check is
> failing.  My guess is that some function is not defined or declared
> properly.  Another guess is that -I/sw/include/readline.h is not
> right.  First, a -I option doesn't make much sense in LDFLAGS, and
> second, the directory name looks wrong (I would expect
> /sw/include/readline, not /sw/include/readline.h).
> 
> jwe

I caught the CPPFLAGS bug about 15 minutes after I sent the email. However,
I missed the readline.h fumble.

I am not an autoconf expert, so I am not sure what is going on, but here is
what seems to be the relevant part of config.log:

configure:20157: checking for rl_set_keyboard_input_timeout in -lreadline
configure:20195: gcc -o conftest -g -O2 -I/sw/include/readline/
/usr/lib/libncurses.5.dylib /sw/lib/libreadline.a  /sw/lib/libhdf5.0.dylib
conftest.c -lreadline   -lncurses -lm  >&5
ld: can't locate file for: -lreadline

It seems that the -lreadline is causing the problem, even though
/sw/lib/libreadline.a is on the compile line. If so, I'm not sure how to get
rid of -lreadline using a suitable configure option.

The ./configure execution was:

./configure --enable-shared --enable-dl --disable-static
LDFLAGS="/usr/lib/libncurses.5.dylib /sw/lib/libreadline.a
/sw/lib/libhdf5.0.dylib" CPPFLAGS=-I/sw/include/readline/
FLIBS=/sw/lib/libg2c.a

I checked to ensure libreadline.a has rl_set_keyboard_input_timeout, and it
appears to. Here is the relevant part from an otool -vt libreadline.a
execution:

000003b0        lmw     r28,0xfff0(r1)
000003b4        blr
_rl_set_keyboard_input_timeout:
000003b8        mfspr   r0,lr
000003bc        bcl     20,31,0x3c0

Dan 



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