Next you need to write a Python script that invokes the C code whose execution you want to debug. For instance mytest.py
:
Now, you can run:
And then in the debugger:
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]
Hi AllI 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@gmail.com> wrote:Hi Allwhen 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@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?thxOn Tue, Dec 29, 2020 at 1:55 PM Amardeep Singh <amardeepjk@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?I am following the steps in the docs. machine is windows 10.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 -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.