Toshio Kuratomi added the comment:
Matthias, Barry, and I looked at this at pycon today. It looks a bit like the
original intent was to have
SO = ".so"
SOABI = "cpython-32mu"
and then CPython extension module suffixes would be:
if SOABI:
so_ext = ''.join(".", SOABI, SO)
else:
so_ext = SO
This would need to be used in distutils/commands/build_ext.py We weren't sure
if there are other places in the code that would need it as well but a quick
build of a module which uses libraries and needs C extensions showed that this
seems to work.
The one worrisome question is whether more people have come to rely on the SO
variable holding the extension module suffix or if more code was broken by the
extension module suffix replacing the library suffix in the SO variable.
Answering that might better show us whether to change these variables back to
their original meanings or to create brand new variables that have the correct
values.
We also discovered the reason the current version appears to work with
python-pillow on Ubuntu boxes but not Fedora. The find_library_files() code
first checks for library names that would match with the "shared" library
suffix. If that fails, it falls back to looking for the "static" library
suffix. On Fedora, there are no static libraries so this function just fails
to find the library. On Ubuntu, the code finds the static libraries and
returns that. This causes the code in python-pillow to attempt to link to the
library with -ljpeg, -lpng, etc... Since the shared libraries actually are
present, the compiler and linker use the shared versions even though python
only found the static versions.
----------
nosy: +a.badger
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