[PROTON-490] [proton-c] Python binding fails to link with Python 3 libraries

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: proton-0.6
• Fix Version/s: proton-0.10
• Component/s: python-binding
• Assignee: Ken Giusti
• Reporter: Ken Giusti
• Created: 21/Jan/14 19:07
• Updated: 07/Jan/16 12:14
• Resolved: 22/Jun/15 13:00

Description

Attempting to link the Swig generated python bindings against the Python 3 development libraries produces unresolved symbol errors:

CMakeFiles/_cproton.dir/pythonPYTHON_wrap.c.o: In function `_wrap_pn_bytes':
pythonPYTHON_wrap.c.text+0xa567): undefined reference to `PyString_FromStringAndSize'
CMakeFiles/_cproton.dir/pythonPYTHON_wrap.c.o: In function `_wrap_pn_bytes_dup':
pythonPYTHON_wrap.c.text+0xa701): undefined reference to `PyString_FromStringAndSize'
CMakeFiles/_cproton.dir/pythonPYTHON_wrap.c.o: In function `_wrap_pn_message_get_user_id':
pythonPYTHON_wrap.c.text+0x1e827): undefined reference to `PyString_FromStringAndSize'
CMakeFiles/_cproton.dir/pythonPYTHON_wrap.c.o: In function `_wrap_pn_data_get_decimal128':
pythonPYTHON_wrap.c.text+0x31450): undefined reference to `PyString_FromStringAndSize'
CMakeFiles/_cproton.dir/pythonPYTHON_wrap.c.o: In function `_wrap_pn_data_get_uuid':
pythonPYTHON_wrap.c.text+0x31559): undefined reference to `PyString_FromStringAndSize'
CMakeFiles/_cproton.dir/pythonPYTHON_wrap.c.o:pythonPYTHON_wrap.c.text+0x31664): more undefined references to `PyString_FromStringAndSize' follow
collect2: error: ld returned 1 exit status

This is due to a name change in the Python 3 API:

http://docs.python.org/2/c-api/string.html?highlight=pystring_fromstring#PyString_FromStringAndSize

http://docs.python.org/2/howto/cporting.html#conditional-compilation

The wrapper C code in proton-c/bindings/python/python.i needs to be updated to support the Python 3 API.