On Sat, Jan 22 2022, Masamichi Hosoda wrote: >> It is something like that, but "-Wl,--export-all-symbols" >> is not used on 1.21.4 and is not needed for most of the other >> modules on 1.22.x >> >> so I am looking for a less extreme action. >> Also to understand how it can impact other python subpackages > > If I understand correctly, I've found the root cause of the issue. > I've sent a pull request to numpy. > https://github.com/numpy/numpy/pull/20874
Based on that pull request, it looks like it's related to the patches used to avoid python C-extension modules with only one exported function mentioned a year ago: https://cygwin.com/pipermail/cygwin/2021-January/247211.html https://cygwin.com/pipermail/cygwin/2021-January/247216.html >From a glance at the Python C API docs, it looks like Python C extension modules are supposed to have only one exported function: https://docs.python.org/3/extending/extending.html#the-module-s-method-table-and-initialization-function https://docs.python.org/3/extending/extending.html#providing-a-c-api-for-an-extension-module The NumPy CFFI tests seem to want to use a few C extension modules as normal shared libraries, which requires that the functions the tests want to use to be exported from the DLL, but this seems to be a somewhat unusual case. I tend to compile my own versions of Cython (without patches), which may have been picked up when I compiled the new version of NumPy. -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
