[Vm-dev] Can I use GDB with SqueakVM ?

[Eliot Miranda]

On Sun, Mar 28, 2010 at 3:59 PM, Michael van der Gulik <mikevdg at gmail.com>wrote:

>
> On Mon, Mar 29, 2010 at 9:10 AM, Mariano Martinez Peck
> <marianopeck at gmail.com> wrote:
> >
> >
> > On Sat, Mar 27, 2010 at 5:57 PM, Eliot Miranda <eliot.miranda at gmail.com>
> wrote:
> >>
> >>
> >> Hi Mario,
> >>     first you want to compile with debug symbols and perhaps with no
> optimization.  Second it looks like you need to link with the pthreads
> library, not juts compile. So you can try e.g.
> >> platforms/unix/configure CFLAGS="-g3 -pthread" LIBS=-lpthread
> >> FWIW I routinely use gdb on Mac OS X, linux and windows to debug the
> Teleplace Cog vm.
> >
> > Thanks Eliot. I tried what you said, but I got another problem now. I
> configure the VM, with this:
> >
> > ../unix/cmake/configure --CFLAGS="-g3 -pthread" --LIBS=-lpthread
> >
> > Then I make and make install. No problems. SqueakVM works ok and I can
> open my images.
> >
> > The problem is with gdb. I tried this:
> >
> > ubuntu at ubuntu-desktop:~/Pharo/vm/Squeak-3.11.3.2135-pharo-src/build$ gdb
> squeak
> > GNU gdb (GDB) 7.0-ubuntu
> > Copyright (C) 2009 Free Software Foundation, Inc.
> > License GPLv3+: GNU GPL version 3 or later <
> http://gnu.org/licenses/gpl.html>
> > This is free software: you are free to change and redistribute it.
> > There is NO WARRANTY, to the extent permitted by law.  Type "show
> copying"
> > and "show warranty" for details.
> > This GDB was configured as "i486-linux-gnu".
> > For bug reporting instructions, please see:
> > <http://www.gnu.org/software/gdb/bugs/>...
> > "/home/ubuntu/Pharo/vm/Squeak-3.11.3.2135-pharo-src/build/squeak": not in
> executable format: File format not recognized
> > (gdb)
> >
> >
> > And the same happens with gdb ./squeak or gdb /usr/local/bin/squeak
> etc...
> >
> > But squeak IS executable:
> >
> > ubuntu at ubuntu-desktop:~/Pharo/vm/Squeak-3.11.3.2135-pharo-src/build$ ls
> -la /usr/local/bin/squeak
> > -rwxr-xr-x 1 root root 1791 2010-03-28 21:57 /usr/local/bin/squeak
> >
> >
> > So...any ideas what can be the problem ?
>
> Try opening "squeak" in a text editor. It could be a script that
> starts the real VM executable which might be elsewhere.
>

Doh!  Try myvm/lib/squeak/3.9-7/squeak



>
> Also, a tip: if you're making VMs, it's better not to install them in
> /usr/local until you're happy with them being stable and working. Use:
>
> > ../unix/cmake/configure --CFLAGS="-g3 -pthread" --LIBS=-lpthread
> --prefix=~/Pharo/myvm (or something).
> > nice make install
>
> (I assume the configure script takes --prefix like GNU autoconf does?)
>
> Also, if you just want to see how the interpreter works, you can run
> it inside Squeak:
>
>
> http://n4.nabble.com/Simulate-3-4-with-InterpreterSimulator-td1678060.html#a1694237
>
> Gulik.
>
> --
> http://gulik.pbwiki.com/
>
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