Re: "undefined symbol" in C extension module
On Sun, Jan 23, 2022 at 9:02 AM Robert Latest via Python-list < python-list@python.org> wrote: > Dan Stromberg wrote: > > Perhaps try: > > https://stromberg.dnsalias.org/svn/find-sym/trunk > > > > It tries to find symbols in C libraries. > > > > In this case, I believe you'll find it in -lpythonx.ym > > Thanks! Found out that ldd produces many errors also with working python > libraries. Turns out I tried to revive a package from v2.7. Need to adapt > it to 3.x > I wonder if you're missing a -Wl,-rpath -Wl,/path/to/library/dir ? -- https://mail.python.org/mailman/listinfo/python-list
Re: "undefined symbol" in C extension module
Robert Latest wrote at 2022-1-22 11:29 GMT: >I've written some CPython extension modules in the past without problems. Now >after moving to a new Archlinux box with Python3.10 installed, I can't build >them any more. Or rather, I can build them but not use them due to "undefined >symbols" during linking. Here's ldd's output when used on the "spam" example >library from the docs: > > linux-vdso.so.1 (0x7ffe2454a000) > libc.so.6 => /usr/lib/libc.so.6 (0x7fb6b6eb9000) > /usr/lib64/ld-linux-x86-64.so.2 (0x7fb6b70a4000) >undefined symbol: PyObject_Init(./build/lib.linux-x86_64-3.10/ >spam.cpython-310-x86_64-linux-gnu.so) There are important C-API changes for Python 3.10 (and above). You may need to modify your extensions such that they work with recent Python versions. -- https://mail.python.org/mailman/listinfo/python-list
Re: "undefined symbol" in C extension module
Dan Stromberg wrote: > Perhaps try: > https://stromberg.dnsalias.org/svn/find-sym/trunk > > It tries to find symbols in C libraries. > > In this case, I believe you'll find it in -lpythonx.ym Thanks! Found out that ldd produces many errors also with working python libraries. Turns out I tried to revive a package from v2.7. Need to adapt it to 3.x -- https://mail.python.org/mailman/listinfo/python-list
Re: "undefined symbol" in C extension module
Perhaps try: https://stromberg.dnsalias.org/svn/find-sym/trunk It tries to find symbols in C libraries. In this case, I believe you'll find it in -lpythonx.ym On Sat, Jan 22, 2022 at 12:43 PM Robert Latest via Python-list < python-list@python.org> wrote: > Hi guys, > > I've written some CPython extension modules in the past without problems. > Now > after moving to a new Archlinux box with Python3.10 installed, I can't > build > them any more. Or rather, I can build them but not use them due to > "undefined > symbols" during linking. Here's ldd's output when used on the "spam" > example > library from the docs: > > linux-vdso.so.1 (0x7ffe2454a000) > libc.so.6 => /usr/lib/libc.so.6 (0x7fb6b6eb9000) > /usr/lib64/ld-linux-x86-64.so.2 (0x7fb6b70a4000) > undefined symbol: PyObject_Init (./build/lib.linux-x86_64-3.10/ > spam.cpython-310-x86_64-linux-gnu.so) > > [and more of the same] > > It seems that I need to install some library to make this work, but which > one? > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list
"undefined symbol" in C extension module
Hi guys, I've written some CPython extension modules in the past without problems. Now after moving to a new Archlinux box with Python3.10 installed, I can't build them any more. Or rather, I can build them but not use them due to "undefined symbols" during linking. Here's ldd's output when used on the "spam" example library from the docs: linux-vdso.so.1 (0x7ffe2454a000) libc.so.6 => /usr/lib/libc.so.6 (0x7fb6b6eb9000) /usr/lib64/ld-linux-x86-64.so.2 (0x7fb6b70a4000) undefined symbol: PyObject_Init (./build/lib.linux-x86_64-3.10/ spam.cpython-310-x86_64-linux-gnu.so) [and more of the same] It seems that I need to install some library to make this work, but which one? -- https://mail.python.org/mailman/listinfo/python-list
