[capi-sig] Embedding basics

ecir hana ecir.hana at gmail.com
Thu Jun 28 11:08:35 CEST 2012


please, I have a bit of trouble grasping a few very basic concepts related
to Python embedding, could someone explain those to me?

What I try to achieve is to have single one (big) binary, which contains my
Python script, the wrapper and Python interpreter itself, I'm on MacOS
10.6. My questions are:

- I would like to build Python myself. I downloaded Python 3.3 beta source
code, extracted it in a folder. Next to "Python-3.3.0b1" folder, there is a
file "test.c" which contains:

#include <Python.h>

main(int argc, char *argv[])
  PyRun_SimpleString("from time import time,ctime\n"
                     "print('Today is', ctime(time()))\n");
  return 0;

Now, what should I do next? I though I would just "somehow" compile and
link Python source code with test.c and that's it but when I do "gcc -I
./Python-3.3.0b1 -o test test.c" I get lots of errors. (Note: I'm total
noob what this whole gcc and static linking and .a files goes...)

- Next I tried to run "./configure" and "make". It finished without errors
and it creates "build/lib.macosx-10.6-x86_64-3.3" folder with lots of *.so
(?) files but I'm not sure how to make use of them.

If building everything from scratch (the first step above) is not an
option, what do I need to build? A "framework"? .dylib? .a? And than link
test.o against that?

- How does Python from python.org get build? Do they use the same
"./configure" and "make" as I can? Do they use any special option?

To summarize, I have Python source code and test.c and I would like to have
one executable which says "Today is ....". Could someone, please, explain
in layman terms, the necessary steps?

Thanks you very much in advance!

Ecir Hana

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