Compatibility problem with emacs 24.1 / GDB 6.3.50?

Compatibility problem with emacs 24.1 / GDB 6.3.50?

[Charles Tucker]

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Caveat: I'm running on OS X (which ships with emacs 22.1 and gdb 6.3.50).
Newer versions grabbed / installed via Mac Homebrew, which may configure
things funny.

Filled with a desire to use more recent versions of tools, I've been using
emacs 23.4 / gdb 6.3 successfully for a while now, but brew recently
updated to emacs 24.1. The gdb mode under this new version spits out the
following garbage output (spacing intact):

Current directory is ~/
GNU gdb 6.3.50-20050815 (Apple version gdb-1752) (Sat Jan 28 03:02:46 UTC
2012)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin".
                                                                     (gdb)


                                        (gdb)
time={wallclock="0.00002",user="0.00001",system="0.00000",start="1339625472.009357",end="1339625472.009373"}


Where is this new output coming from? It looks like it might be debugging
output from gdb-mode, but that's a guess.

I also tried solving the problem by running a more recent version of gdb
(again, through Homebrew), but I've yet to figure out how emacs selects
which gdb executable for "M-x gdb" to run.

-- 
  -Charles

:(){:|:&};:

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Re: Compatibility problem with emacs 24.1 / GDB 6.3.50?

[Kaushik Srenevasan]

On Wed, Jun 13, 2012 at 3:13 PM, Charles Tucker <cetucker@gmail.com> wrote:
> Caveat: I'm running on OS X (which ships with emacs 22.1 and gdb 6.3.50).
> Newer versions grabbed / installed via Mac Homebrew, which may configure
> things funny.
>
> Filled with a desire to use more recent versions of tools, I've been using
> emacs 23.4 / gdb 6.3 successfully for a while now, but brew recently updated
> to emacs 24.1. The gdb mode under this new version spits out the following
> garbage output (spacing intact):
>
Emacs 24 uses the machine interface (MI) to talk to GDB. I don't think
GDB 6.3 has support for MI.
You can simply call Emacs' gdb function (M-x gdb) with the complete
path to your (newer) GDB installation (macports typically calls it
"ggdb" - /opt/bin/ggdb)

(gdb "/opt/bin/ggdb -i=mi [[ rest of the gdb command line ]]")

Note that -i=mi is what asks GDB to output MI commands that Emacs recognizes.

   -Kaushik

Re: Compatibility problem with emacs 24.1 / GDB 6.3.50?

[Kaushik Srenevasan]

On Thu, Jun 14, 2012 at 4:31 PM, Charles Tucker <cetucker@gmail.com> wrote:
> Brilliant, that appears to work the way I had hoped. Is there some way of
> overriding the default location emacs checks for gdb permanently? It'll get
> a little tedious to type that out each time I launch a debug session.
>

+emacs-devel

Put something like
(defun my-gdb ()
  (interactive)
  (gdb "/path/to/gdb ..."))

where emacs can find it. You can now run M-x my-gdb.

   -Kaushik

Re: Compatibility problem with emacs 24.1 / GDB 6.3.50?

[chad]

If you're launching emacs from the dock, spotlight, or a launcher like QuickSilver/Alfred/LaunchBar/etc, you'll want to tweak your environment so that $PATH finds your local stuff.  This can be a little tricky, depending on which version of the OS you're running, so I'll refer you to stack overflow:

	http://stackoverflow.com/questions/135688/setting-environment-variables-in-os-x

Hope that helps,
*Chad

On Thu, Jun 14, 2012 at 4:31 PM, Charles Tucker <cetucker@gmail.com> wrote:
> Brilliant, that appears to work the way I had hoped. Is there some way of
> overriding the default location emacs checks for gdb permanently? It'll get
> a little tedious to type that out each time I launch a debug session.

Re: Compatibility problem with emacs 24.1 / GDB 6.3.50?

[Stefan Monnier]

>> Brilliant, that appears to work the way I had hoped. Is there some way of
>> overriding the default location emacs checks for gdb permanently? It'll get

Emacs uses $PATH, like any other program, to find the `gdb' executable,
so just set your PATH accordingly.  If you want a $PATH special in
Emacs, you can set `exec-path' instead.


        Stefan