Installation of sys-fs/cryptsetup-2.3.x results in the following warning: * Messages for package sys-fs/cryptsetup-2.3.5-r1: * CONFIG_DM_CRYPT: is not set (required for cryptsetup) I have searched through configs for both kernels 5.11 and 5.12 (I just removed 5.10, and have not checked for it there) and as best I can determine, it is no wonder that this flag is not set because it doesn't exist. Nevertheless, aside from this warning cryptsetup appears to build and install correctly, and I have not observed any breakage resulting from it. Reproducible: Always babylon5:root:~:23 # emerge --info Portage 3.0.18 (python 3.8.8-final-0, default/linux/amd64/17.1/desktop, gcc-9.3.0, glibc-2.32-r7, 5.11.16-gentoo-babylon5 x86_64) ================================================================= System uname: Linux-5.11.16-gentoo-babylon5-x86_64-AMD_Phenom-tm-_II_X6_1090T_Processor-with-glibc2.2.5 KiB Mem: 16396884 total, 5603536 free KiB Swap: 8388604 total, 8385276 free Timestamp of repository gentoo: Tue, 04 May 2021 06:00:01 +0000 Head commit of repository gentoo: e7ae2ff9eb2a4c5a181ebd5fbd317a66870b7927 Head commit of repository SwordArMor: 261ae1e626a89192b7e9607f5873f05a0d21983c Head commit of repository brother-overlay: bd7f27e3399297ff80dfa64ed57cf1054792b573 Head commit of repository mysql: 3925d2fe5eef1e63602a4f520028aa55dca3df08 Head commit of repository palemoon: 5662a3a366c17807ead43f3adcd59c676e2eb1af sh bash 5.0_p18 ld GNU ld (Gentoo 2.35.2 p1) 2.35.2 app-shells/bash: 5.0_p18::gentoo dev-java/java-config: 2.3.1::gentoo dev-lang/perl: 5.30.3::gentoo dev-lang/python: 3.8.8_p1::gentoo, 3.9.2_p1::gentoo dev-lang/rust-bin: 1.51.0::gentoo dev-util/cmake: 3.20.2::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.7::gentoo sys-apps/openrc: 0.42.1-r1::gentoo sys-apps/sandbox: 2.22::gentoo sys-devel/autoconf: 2.13-r1::gentoo, 2.69-r5::gentoo sys-devel/automake: 1.16.2-r1::gentoo sys-devel/binutils: 2.35.2::gentoo sys-devel/gcc: 9.3.0-r2::gentoo, 10.2.0-r5::gentoo sys-devel/gcc-config: 2.4::gentoo sys-devel/libtool: 2.4.6-r6::gentoo sys-devel/make: 4.3::gentoo sys-kernel/linux-headers: 5.12::gentoo (virtual/os-headers) sys-libs/glibc: 2.32-r7::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://minbar.caerllewys.net/gentoo-portage priority: -1000 sync-rsync-verify-jobs: 1 sync-rsync-verify-metamanifest: yes sync-rsync-extra-opts: sync-rsync-verify-max-age: 24 SwordArMor location: /var/db/repos/SwordArMor sync-type: git sync-uri: https://git.grifon.fr/alarig/SwordArMor-gentoo-overlay masters: gentoo brother-overlay location: /var/db/repos/brother-overlay sync-type: git sync-uri: https://github.com/stefan-langenmaier/brother-overlay.git masters: gentoo gentoo-dev-alaric location: /var/lib/alaric masters: gentoo mysql location: /var/db/repos/mysql sync-type: git sync-uri: https://anongit.gentoo.org/git/proj/mysql.git masters: gentoo palemoon location: /var/db/repos/palemoon sync-type: git sync-uri: https://github.com/deu/palemoon-overlay masters: gentoo ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=amdfam10 -O2 -pipe -mfpmath=sse -mcx16 -mpopcnt" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt /var/bind /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=amdfam10 -O2 -pipe -mfpmath=sse -mcx16 -mpopcnt" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--with-bdeps=y --verbose-conflicts --keep-going" ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://gentoo.osuosl.org http://www.gtlib.gatech.edu/pub/gentoo http://mirrors.cs.wmich.edu/gentoo http://distfiles.gentoo.org " LANG="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en_US en" MAKEOPTS="-j12" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" USE="3dnow 3dnowext X a52 aac acl acpi alsa amd64 bash-completion berkdb branding bzip2 cairo cdda cddb cdr cli crypt cups dbus dri dts dvd dvdr elogind emboss encode exif ffmpeg flac fltk fortran gdbm gif gpm gtk gui iconv icu id3tag imagemagick ipv6 java jpeg jpeg2k lcms libglvnd libnotify libtirpc mad mmx mmxext mng mp3 mp4 mpeg multilib mysql ncurses nls nptl nsplugin nvidia ogg opengl openmp opus pam pango pcre pcsc-lite pdf png policykit ppds qt5 readline sdl seccomp spell split-usr sse sse2 sse4 ssl startup-notification svg tcpd theora threads tiff tk tools truetype udev udisks unicode upower usb utils v4l v4l2 vdpau vorbis vpx wxwidgets x264 xattr xcb xml xpm xv xvid xvmc zlib" ABI_X86="64" ADA_TARGET="gnat_2018" ALSA_CARDS="emu10k1 hda-intel" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="3dnow 3dnowext mmx mmxext popcnt sse sse2 sse3 sse4a" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="evdev keyboard mouse" KERNEL="linux" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-3 php7-4" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_8" PYTHON_TARGETS="python3_8" RUBY_TARGETS="ruby26" USERLAND="GNU" VIDEO_CARDS="nvidia v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq proto steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, RUSTFLAGS
It's required for using cryptsetup and it is still valid and present in > found in Linux kernels: 2.6.4–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.12, 5.12+HEAD It is located under > → Device Drivers → Multiple devices driver support (RAID and LVM) If you cannot see this option, check > depends on: ( CONFIG_BLK_DEV_DM ) && (( CONFIG_ENCRYPTED_KEYS || CONFIG_ENCRYPTED_KEYS = CONFIG_n )) && (( CONFIG_TRUSTED_KEYS || CONFIG_TRUSTED_KEYS = CONFIG_n )) CONFIG_BLK_DEV_DM depends on CONFIG_MD which depends on CONFIG_BLOCK. It's a problem in your kernel.config.