From Python 3.11, PyFrameObject has been changed into opaque struct.
We need to access those fields via API.
Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Previously it relied on AX_PYTHON_DEVEL, which in turn executes
python-config to get the build flags. However this does not work while
cross compiling because we can't execute the python-config build for the
target platform. To circumvent this problem the python build flags are
now queried via pkgconfig, which has the drawback of not having some
extra build flags, but they do not seem to be needed.
I tested this patch with the termux build system and it build without
their existing hack of injecting python after the configure step. I also
tested non cross compile build on Arch Linux and it also still works.
Fixes#851
gcc-12 detects redundant check against array of arrays as:
src/plugins/python_api.c: In function ‘python_api_register_command’:
src/plugins/python_api.c:199:31: error: the comparison will always evaluate as ‘true’ for the address of ‘c_arguments’ will never be NULL [-Werror=address]
199 | while (c_arguments[i] != NULL && c_arguments[i][0] != NULL) {
| ^~
src/plugins/python_api.c:161:15: note: ‘c_arguments’ declared here
161 | char* c_arguments[args_len == 0 ? 0 : args_len + 1][2];
| ^~~~~~~~~~~
ncursesw defines _XOPEN_SOURCE macro via command-line. In particular, it
is defined in ncursesw.pc and extracted via pkg-config. From other side,
Python defines the same macro unconditionally in pyconfig.h. Python-3.x
defines the macro with value different than ncursesw does. In turn, this
causes a warning that the macro is redefined. And warnings are treated
as errors.
Since both entities define the mecro unconditionally, we can't simply
reorder headers as Python developers suggest. So, undefine the macro
just before the <Python.h> to fix this silly issue.
