reproduce: git remote add openeuler https://gitee.com/openeuler/kernel.git git fetch --no-tags openeuler OLK-6.6 git checkout bad535d287c9c1056d99de3666be7da84de4a8fc make menuconfig # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS # install Sphinx 2.4.4 make htmldocs