I'm trying to debug an extension module for python that I wrote in C. I compiled it using the following:
python setup.py build -g install --user
I then debug with:
gdb python
...
b py_node_make
run test.py
It breaks at py_node_make (one of the functions I defined), but then I try:
(gdb) print node
No symbol "node" in current context.
The function I'm trying to debug is:
static Python_node_t* py_node_make(
node_t* node)
{
Python_node_t* pyNode;
pyNode = PyObject_New(Python_node_t, &t_node);
pyNode->node = node;
pyNode->borrowed = true;
return pyNode;
}
For source debugging to work, your C extensions must be built with debug info (gcc -g
). Since you're driving the compilation process with distutils
, you can specify the compiler flags used through the CFLAGS environment variable (Installing Python Modules: Tweaking compiler/linker flags):
CFLAGS='-Wall -O0 -g' python setup.py build
Note that even if distutils defaults to a higher optimization level than -O0, you really shouldn't get that No symbol "node" in current context error as long as -g is passed and most Python builds do pass -g by default.