GDB - How to set breakpoints in files located outside the current dir

chogall · 02-17-2011, 08:59 AM

Hi !

I'm using GDB to debug a program and the thing is, there are many files in many different folders.

So I did start gdb and then I wrote :

Code:

(gdb) break ../../a_folder/another_folder/my_file.h

And it says :

Quote:

No source file named ../../a_folder/another_folder/my_file.h.

The path is correct, I checked it a million of times. Then I tried with the absolute path which is from the home directory. So something like :

Code:

(gdb) break ~/project/blabla/a_folder/another_folder/my_file.h

And this time I got :

Quote:

Can't find member of namespace, class, struct, or union named "~/project/blabla/a_folder/another_folder/my_file.h"
Hint: try '~/project/blabla/a_folder/another_folder/my_file.h'<TAB> or '~/project/blabla/a_folder/another_folder/my_file.h'<ESC-?>
(Note leading single quote.)

Does anyone know the reason ? And how to solve this ?

The option -g is set in my compiling options.

Thanks!

Aquarius_Girl · 02-17-2011, 10:10 AM

So, to start Gdb you must have compiled a specific program something like this:

Code:

gcc -Wall -Wextra -g myProg.c

Then run gdb as follows:

Code:

gdb a.out

Now you can set the breakpoints pertaining to all functions in THIS executable.
So the files being in different folders is not a problem, but the function you
want to debug being in different executable IS.

ntubski · 02-17-2011, 03:25 PM

You can tell gdb where to find the source files: Source Path.

A break point needs to be set at a specific line, you only gave a file name: Specify Location.