5

When I'm using 

M-x gdb

when lots of source files are open in emacs, the default directory in emacs is often different with the directory of my working copy to run that file i want to run. It's always painful to type the correct full path of the file which i want to debug. How could I solve this problem? Is there a way to change the current default directory to the working copy of my project?

4 Answers4

17

I kept editing my .emacs file, using

(setq default-directory "~/your/path")

but found that whenever I restarted emacs, it kept defaulting to the 'original' directory.

It turned out the problem was that I had left on the default startup screen (GNU emacs 23). I think that the default welcome screen with the links to the tutorial etc, changes the default directory back to the one where the welcome screen files are to be found. I clicked on the 'customize startup' link, then switched off the welcome screen. Since then, when I open emacs it defaults to the scratch buffer, but the default-directory when I use C-x C-f is the one I set in the .emacs file.

Hope that helps someone out there, it was driving me crazy!

Kevin Panko
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Ghufran
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2

The current working directory is always the location of the current buffer.

One option is to go into shell-mode and then cd to the preferred directory, then anything you open, or run from within that shell-buffer will default to that directory.

Brian Postow
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2

If you're in a buffer not attached to a file (like *scratch*, gnus' buffer...) you can use M-x cd to change the current directory. Just opening the directory will also do the trick.

In gdb, you can ajso just type cd /where/i/want/to/go

Rémi
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Normally, The current working directory is always the location of the current buffer. And gdb will use this directory automatically.

But I indeed had distressed experience that when M-x gdb, it always entered the ~ directory, and complained the target file couldn't be found.

Finally, I found this is caused by the buffer was changed unintended, and may be backed up. I realized this when I killed this buffer and reopened it. After kill and reopen the buffer, M-x gdb works well again.

From my experience, when this happens, exit emacs and restart it can't help fixing this. Just try killing the buffer and reopen the file.

bigstone1998
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