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Date: Tue, 26 Jan 1999 11:47:20 +0000
From: Mark Ovens <marko@uk.radan.com>
Organization: Radan Computational Ltd
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Subject: Basic help with gdb
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I'm trying to learn how to use gdb and have got a fairly basic problem
that I can't seem to get round.

I've got Greg's book, Porting Unix Software, which shows how to use
gdb. Unfortunately he uses xterm as the example prog to debug, which
of course runs in it's own window. However I'm wanting to debug a CLI
app and therefore need the app to run in a different window to the
debugger (so I can input debugger commands), so I checked the manpage
and found there is a ``-tty='' option to use a different device as the
app's STDIO.

OK, I start 2 shell windows, ttyp1 and ttyp2.

Start gdb in ttyp1 with ``gdb -tty=/dev/ttyp2 prog''.

I get the ``(gbd)'' prompt.

Type ``r''

but then get an error in *ttyp2* ``cannot use /dev/tty for input''
(note it says ``tty'' not ``ttyp2'').

I'm using shelltool(1) under olvwm for this but I get the same problem
if I use xterms or the console (ttyv[012]).

How do you make this work? Can anyone help?

Thanks

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