reproduce: git remote add openeuler https://gitee.com/openeuler/kernel.git git fetch --no-tags openeuler OLK-6.6 git checkout b8a759002c48f227d03084fb6b6213a3beaa44e3 make menuconfig # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS # install Sphinx 2.4.4 make htmldocs