On Dec 12, 2004, at 1:09 PM, Martin v. Löwis wrote:
Bob Ippolito wrote:Yes, of course, I was talking about the executable, not extensions. On Mac OS X 10.3+, the linker flag -undefined dynamic_lookup allows extensions to link to no Python whatsoever.
It's the same on SysV ELF shared libraries, and in most other unices.
The extensions will just find the symbols it needs from some other image already loaded into the process at runtime. If it weren't for the "forced" ABI incompatibility, we'd already have extensions that work cross-Python-major-version (assuming they used a safe subset of functions and structures).
Are you talking about a forced ABI incompatibility, beyond the Windows issue of linking with a specific pythonxy.dll?
On Unix, you certainly can have extensions across Python major versions.
I was talking about PYTHON_API_VERSION, hence "forced" in quotes. Nobody likes to see an ugly error message.
-bob
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