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Re: gdb hangs in Emacs 23.2.1 (Mac OSX 10.6.3)

From: Peter Dyballa
Subject: Re: gdb hangs in Emacs 23.2.1 (Mac OSX 10.6.3)
Date: Wed, 9 Feb 2011 10:53:34 +0100

Am 09.02.2011 um 01:48 schrieb Dylan:

Any other ideas??


1.) Don't repeat in ~/.bash_profile what you've set in ~/.MacOSX/ environment.plist! Better use cleverly:

        PATH=`defaults read "${HOME}/.MacOSX/environment" PATH`

or, if you really (why?) need to alter the default value from ~/.MacOSX/environment.plist:

        PATH=/Whatever:/else:`defaults read "${HOME}/.MacOSX/environment" PATH`

Shells in whatever tools inherit from your login environment which in turn is set by ~/.MacOSX/environment.plist. Their RC files can be kept simple and basic. (Try it, if you don't believe.)

2.) Bash is a beast that has a few too many modes of mixed operation (interactive, login, ...). Additional setup has to be done exactly for this targeted mode.

3.) In Emacs you can check its process environment by two means. In *scratch* buffer you can execute this Lisp and similar code:

        (getenv "PATH")

or invoke in *shell* buffer a UNIX command like this:

        ps -lwwwxE | egrep UID\|Emacs | grep -v grep

It will list the environment of a process that has in its name the word "Emacs", with a capital E. So you can learn from this where Emacs searches for binaries, for example.

4.) You can also invoke:

        M-x shell-command RET which <name of fsf-gdb binary> RET

and in echo-area the path-name will appear. If not, than something is wrong. Than you can start debugging by adding to your login shell's RC files (best all) lines like:

        echo "Hello! My name is <appropriate file name>."

and see which is executed when you perform shell-command.

5.) What is GUD/GDB documentation telling you about the name of the gdb executable? Is it fixed or is set to some value by a variable? I've seen a

        (defcustom gud-gud-gdb-command-name "gdb --fullname"

... which could explain why a name "fsf-gdb" would never be found.



"What do you think of Western Civilisation?"
"I think it would be a good idea!"
                                – Mohandas Karamchand Gandhi

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