[Numpy-discussion] Help needed GDB

[Amardeep Singh]

Hi Apologies

Once last issue is pending.Any pointers are helpful.

I am following the below docs.



Next you need to write a Python script that invokes the C code whose
execution you want to debug. For instance mytest.py:

import numpy as npx = np.arange(5)np.empty_like(x)

Now, you can run:

$ gdb --args python runtests.py -g --python mytest.py

And then in the debugger:

(gdb) break array_empty_like(gdb) run.  --> once i type run and enter
nothing happens it just gets struck up there.


Make breakpoint pending on future shared library load? (y or [n]) y

Breakpoint 1 (array_empty_like) pending.

(gdb) run

Starting program: /usr/bin/python mytest.py

[New Thread 0x1e03 of process 16513]

[New Thread 0x2303 of process 16513]




thx



On Tue, Dec 29, 2020 at 9:38 PM Amardeep Singh <amardeepjk at gmail.com> wrote:

> Hi All
>
> I was able to fix.
>
> >import sys
>
> >print(sys.version_info)
>
> >end
>
> sys.version_info(major=3, minor=9, micro=1, releaselevel='final', serial=0)
>
> (gdb) quit
>
>
>
>
> https://github.com/crosstool-ng/crosstool-ng/issues/1308
>
>
>  this was the issue.
>
>
> The solution is to open /gdb/python/python-config.py and comment out these
> two lines:
>
>  if getvar('LINKFORSHARED') is not None:
>   libs.extend(getvar('LINKFORSHARED').split())
>
>
>
>
>
>
>
>
>
>
> On Tue, Dec 29, 2020 at 4:27 PM Amardeep Singh <amardeepjk at gmail.com>
> wrote:
>
>> Hi All
>>
>> when i. try to use python3 installed on my macbook i get this.
>>
>> checking for libmpfr... no
>>
>> configure: WARNING: MPFR is missing or unusable; some features may be
>> unavailable.
>>
>> checking whether to use python... /usr/local/bin/python3
>>
>> checking for python... no
>>
>> configure: error: no usable python found at /usr/local/bin/python3
>>
>>
>>
>> These are the commands i ran
>>
>>
>> 1) /Users/amardeepsingh/Downloads/gdb-9.2/configure
>> --with-python=/usr/local/bin/python3
>>
>>
>> 2) make
>>
>>
>>
>>
>> my mac
>>
>>
>>  % which python3
>>
>>
>> /Library/Frameworks/Python.framework/Versions/3.9/bin/python3
>>
>> % ls -lrt /usr/local/bin/python3
>>
>> lrwxr-xr-x  1 root  wheel  69 Dec 29 14:37 /usr/local/bin/python3 ->
>> ../../../Library/Frameworks/Python.framework/Versions/3.9/bin/python3
>>
>>
>>
>>
>>
>>
>>
>>
>> On Tue, Dec 29, 2020 at 4:04 PM Amardeep Singh <amardeepjk at gmail.com>
>> wrote:
>>
>>> Hi All,
>>>
>>> I was able to fix it but one thing i am not getting.
>>> it is building with python 2.
>>>
>>> I need python 3  enabled gdb.
>>>
>>> ./configure --with-python.  --> how to make it to use python 3 installed
>>> on my machine?
>>>
>>> thx
>>>
>>>
>>>
>>>
>>> On Tue, Dec 29, 2020 at 1:55 PM Amardeep Singh <amardeepjk at gmail.com>
>>> wrote:
>>>
>>>> Hi All,
>>>>
>>>> I am trying to debug c code of numpy via gdb.Can someone help me with
>>>> this?
>>>> i am getting " Python scripting is not supported in this copy of GDB".
>>>> How to install python supported gdb on win10?
>>>>
>>>>
>>>> https://numpy.org/doc/stable/dev/development_environment.html
>>>>
>>>> I am following the steps in the docs. machine is windows 10.
>>>>
>>>> Debugging
>>>> <https://numpy.org/doc/stable/dev/development_environment.html#debugging>
>>>>
>>>> Another frequently asked question is “How do I debug C code inside
>>>> NumPy?”. First, ensure that you have gdb installed on your system with the
>>>> Python extensions (often the default on Linux). You can see which version
>>>> of Python is running inside gdb to verify your setup:
>>>>
>>>> (gdb) python>import sys>print(sys.version_info)>endsys.version_info(major=3, minor=7, micro=0, releaselevel='final', serial=0)
>>>>
>>>>
>>>>
>>>>
>>>> $ gdb -v
>>>> GNU gdb (GDB) 7.6.1
>>>> This GDB was configured as "mingw32".
>>>>
>>>> $ gdb
>>>> (gdb) python
>>>> >import sys
>>>> >print(sys.version_info)
>>>> >end
>>>> (gdb) Python scripting is not supported in this copy of GDB.
>>>>
>>>
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