cscope

cscope

[Ravi Uday]

Hi,
I am unable to use cscope with emacs.
I was able to load the cscope.el file, but on searching
it fails to display any results (says cscope: 0 lines).
How does one specify the path to cscope.out file.

Similar case with gid too.

Thanks,
Ravi

Re: cscope

[Thorsten Bonow]

>>>>> "Ravi" == Ravi Uday <raviuday@gmail.com> writes:

    Ravi> Hi, I am unable to use cscope with emacs.  I was able to load the
    Ravi> cscope.el file, but on searching it fails to display any results (says
    Ravi> cscope: 0 lines).  How does one specify the path to cscope.out file.

I have to guess because you do not give more information:

- The cscope database has to be in the same directory or you have to tweak
  `cscope-master-info-table' as described in the documentation.

- You're using xcscope (it's in the contrib subdirectory of the cscope sources)
  and not cscope (which I think you should anyway!).  Is the cscope-indexer
  script in your path? If not, xcscope wasn't properly installed for your Emacs.

  If you work on Windoze, you need a bash shell to make this script work. I used
  to use it with Cygwin. Googling will give you some hints.

So I would switch to xcscope and if you tell me more, I'll try to help...

    Ravi> Similar case with gid too.

What's that? 

There is also GNU Global...

Toto


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Re: cscope

[Ravi Uday]

Thorsten Bonow wrote:
>>>>>>"Ravi" == Ravi Uday <raviuday@gmail.com> writes:
> 
> 
>     Ravi> Hi, I am unable to use cscope with emacs.  I was able to load the
>     Ravi> cscope.el file, but on searching it fails to display any results (says
>     Ravi> cscope: 0 lines).  How does one specify the path to cscope.out file.
> 
> I have to guess because you do not give more information:
> 
> - The cscope database has to be in the same directory or you have to tweak
>   `cscope-master-info-table' as described in the documentation.
> 
I am using just cscope and dont have xcscope.
Actually the question is
After you have built the cscope files and invoked the emacs21 from there,
what is the process/procedure to load a cscope file into emacs (may be 
in .emacs)
and set any env/path variables if any



> - You're using xcscope (it's in the contrib subdirectory of the cscope sources)
>   and not cscope (which I think you should anyway!).  Is the cscope-indexer
>   script in your path? If not, xcscope wasn't properly installed for your Emacs.
> 
>   If you work on Windoze, you need a bash shell to make this script work. I used
>   to use it with Cygwin. Googling will give you some hints.
> 
> So I would switch to xcscope and if you tell me more, I'll try to help...
> 
>     Ravi> Similar case with gid too.
> 
> What's that? 
> 
> There is also GNU Global...
> 
> Toto
> 
> 

Re: cscope

[Thorsten Bonow]

>>>>> "Ravi" == Ravi Uday <raviuday@gmail.com> writes:

    Ravi> I am using just cscope and dont have xcscope.  Actually the question
    Ravi> is After you have built the cscope files and invoked the emacs21 from
    Ravi> there, what is the process/procedure to load a cscope file into emacs
    Ravi> (may be in .emacs) and set any env/path variables if any

Hi!

Let's do it step by step:

For your Emacs initialisation file:

;;
(add-to-list 'load-path "/directory/where/you/put/your/cscop.el-library")
(require 'cscope)
;;

You can omit the first line if you have put cscope.el into a directory already in your
load-path, e.g. a site-lisp directory. Don't forget to byte-compile it for
faster loading and execution...

So now I have put this example C file "test.c" into directory "~/42"

/* test.c */
main () {

}
/* test.c */

Then I can call the cscope program:

~/42 $ cscope ./test.c

That produces a "cscope.out" file. Now if you open your emacs with

~/42 $ emacs ./test.c

You can put the cursor on "main" and call 

M-x cscope-find-c-symbol

cscope.el now proposes to look for "main" (not a very useful example, I know
:-), press return and voila, a buffer opens which tells you that

Find this C symbol: main
cscope: 1 lines
test.c main 1 main () {
>> 

You can get help on other functions in the package by 

C-h f cscope- and then pressing TAB to get the a list of functions in
the package, e.g. 

cscope-find-all
cscope-find-c-symbol
cscope-find-egrep-pattern
cscope-find-file
cscope-find-files-including
cscope-find-functions-called
cscope-find-functions-calling
cscope-find-global-definition
cscope-find-grep-pattern
cscope-find-text-string

But they simple let you get access to cscope functionality from within Emacs...

    Ravi> I am using just cscope and dont have xcscope.

As I have mentioned before: xcscope is normally included in the cscope
package. So very likely you have it. I prefer it to plain cscope.el. But YMMV...

Hope this helps...

Toto


-- 
Contact information and PGP key at
http://www-users.rwth-aachen.de/thorsten.bonow

Now I have a cat. Well, that's not quite accurate. A cat and I have
each other.

Friedman, Kinky (1993), When the cat's away. New York (Wings Books),
421