python help(gdb) doesn't work in my local build.

python help(gdb) doesn't work in my local build.

[Michael Snyder]

It says:

No such file or directory: '/usr/local/share/gdb/python/gdb'

1) What do I do to tell it where to look locally?
2) What do I do to install this by hand?

Thanks,
Michael

Re: python help(gdb) doesn't work in my local build.

[Tom Tromey]

Michael> It says:
Michael> No such file or directory: '/usr/local/share/gdb/python/gdb'

Michael> 1) What do I do to tell it where to look locally?
Michael> 2) What do I do to install this by hand?

I don't think that is enough information to know what is going on in
your scenario, but I would hazard a guess that you did not `make
install', but that the python module is still referring to the install
path.

Maybe this is fixable.  Or you could make install.

Tom

Re: python help(gdb) doesn't work in my local build.

[Jan Kratochvil]

On Fri, 11 Mar 2011 20:45:14 +0100, Michael Snyder wrote:
> No such file or directory: '/usr/local/share/gdb/python/gdb'
> 
> 1) What do I do to tell it where to look locally?
> 2) What do I do to install this by hand?

GDB is intentionally omitted from the standalone-Python help.

On correctly Fedora 14 x86_64 installed Python+GDB:

$ python -c 'help(gdb)'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'gdb' is not defined
$ gdb -q -nx -ex 'python help(gdb)' -ex q
Help on package gdb:

NAME
    gdb
[...]

GDB part of the help was intentionally moved out of the standard Python help
directory tree as reading the code providing help texts requires to load the
whole such Python modules which require the bindings provided by GDB itself.

http://bugs.python.org/issue7015
https://bugzilla.redhat.com/show_bug.cgi?id=526313

$ python
>>> help()                                                                      help> modules gdb

Here is a list of matching modules.  Enter any module name to get more help.

Traceback (most recent call last):
<module>
    class RequireCommand (gdb.Command):
AttributeError: 'module' object has no attribute 'Command'



Regards,
Jan

Re: python help(gdb) doesn't work in my local build.

[Michael Snyder]

Tom Tromey wrote:
> Michael> It says:
> Michael> No such file or directory: '/usr/local/share/gdb/python/gdb'
> 
> Michael> 1) What do I do to tell it where to look locally?
> Michael> 2) What do I do to install this by hand?
> 
> I don't think that is enough information to know what is going on in
> your scenario, but I would hazard a guess that you did not `make
> install', but that the python module is still referring to the install
> path.

Correct -- I am running gdb from my build tree.

> 
> Maybe this is fixable.  Or you could make install.

How would you get it to work from your build tree?

Re: python help(gdb) doesn't work in my local build.

[Tom Tromey]

Tom> Maybe this is fixable.  Or you could make install.

Michael> How would you get it to work from your build tree?

Actually, it works fine for me.

I guess I would debug the startup code in python.c to see why it isn't
working for you.  See _initialize_python, there is a comment about
data-directory, which is where the runtime stuff gets copied and used
for in-tree runs.

Tom