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Running a command in a debugger
-------------------------------
This involves several (easy) steps:
1. Recompile BART with debugging information. Create
a Makefile.local in the BART directory with the
following line added:
DEBUG=1
Then recompile with:
make allclean
make bart
2. Install the GNU debugger (gdb)
3. Run the failing BART command:
gdb --args bart <command> [<options> ...] <arg1> ...
4. Then type 'run' to start the process.
If it crashes, you are back in the debugger. You can also
type CTRL-C to interrupt it at any time.
In the debugger:
You can type 'bt' to get a backtrace which is helpful to
investigate a segmentation fault or similar.
You can also call functions. For example, this can be used to save
a multi-dimensional array from the debugger like this:
(gdb) call dump_cfl("dbg_img", 16, dims, image)
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