Hi On Thu, Apr 09, 2020 at 05:04:54AM +0530, Bhaskar Chowdhury wrote: > On 13:25 Wed 08 Apr 2020, Jonathan Corbet wrote: > > On Wed, 8 Apr 2020 17:07:05 +0530 > > Bhaskar Chowdhury <unixbhaskar@xxxxxxxxx> wrote: > > > > > Extension error: > > > Could not import extension cdomain (exception: cannot import name > > > 'c_funcptr_sig_re' from 'sphinx.domains.c' > > > (/usr/lib/python3.8/site-packages/sphinx/domains/c.py)) > > > Apr 08 16:48:46 enabling CJK for LaTeX builder > > > Apr 08 16:48:46 CC kernel/power/poweroff.o > > > make[1]: *** [Documentation/Makefile:81: htmldocs] Error 2 > > > make: *** [Makefile:1549: htmldocs] Error 2 > > > make: *** Waiting for unfinished jobs.... > > > > This is weird, to say the least. But I think the "python3.8" in the > > message above says everything you need to know. If you're running with > > an unreleased version of Python, it's not entirely surprising that you > > might run into trouble with a complex package. > > > > jon > > Thank you Jon...will investigate more and keep your suggestion in mind. The problem is actually related to changes happening in Sphinx 3.0.0. There is the followign issue filled upstream: https://github.com/sphinx-doc/sphinx/issues/7421 'c_funcptr_sig_re' was removed upstream in sphinx v3.0.0b1 and so the kernel documentation build fails. This is reproducible with a recent sphinx version (in attached case it is 3.2.0): $ make PYTHON=python3 xmldocs SPHINX xmldocs --> file:///home/build/linux/Documentation/output/xml make[2]: Nothing to be done for 'xml'. Running Sphinx v3.2.0 Extension error: Could not import extension cdomain (exception: cannot import name 'c_funcptr_sig_re' from 'sphinx.domains.c' (/usr/lib/python3/dist-packages/sphinx/domains/c.py)) make[1]: *** [Documentation/Makefile:115: xmldocs] Error 2 make: *** [Makefile:1655: xmldocs] Error 2 Distribution reports related to this issue: https://bugs.debian.org/963636 https://bugs.archlinux.org/task/66178 https://bugs.archlinux.org/task/66156 Regards, Salvatore