$ emerge --info Portage 3.0.28 (python 3.9.7-final-0, default/linux/amd64/17.1/desktop, gcc-11.2.0, glibc-2.33-r7, 5.10.73 x86_64) ================================================================= System uname: Linux-5.10.73-x86_64-Intel-R-_Core-TM-_i7-6820HK_CPU_@_2.70GHz-with-glibc2.33 KiB Mem: 65796268 total, 32824964 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Sun, 17 Oct 2021 12:36:27 +0000 Head commit of repository gentoo: 87cb058670084c1f2ddab274c9edd347de3693e5 sh bash 5.1_p8 ld GNU ld (Gentoo 2.37_p1 p0) 2.37 ccache version 4.4.2 [enabled] app-shells/bash: 5.1_p8::gentoo dev-java/java-config: 2.3.1::gentoo dev-lang/perl: 5.34.0-r3::gentoo dev-lang/python: 2.7.18_p13::gentoo, 3.8.12_p1::gentoo, 3.9.7_p1::gentoo, 3.10.0_p1::gentoo dev-lang/rust: 1.55.0::gentoo dev-util/ccache: 4.4.2::gentoo dev-util/cmake: 3.21.3::gentoo sys-apps/baselayout: 2.8::gentoo sys-apps/openrc: 0.44.7::gentoo sys-apps/sandbox: 2.25::gentoo sys-devel/autoconf: 2.13-r1::gentoo, 2.71-r1::gentoo sys-devel/automake: 1.16.5::gentoo sys-devel/binutils: 2.37_p1::gentoo sys-devel/gcc: 11.2.0::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: 5.14::gentoo (virtual/os-headers) sys-libs/glibc: 2.33-r7::gentoo Repositories: gentoo location: /usr/portage sync-type: git sync-uri: https://github.com/gentoo-mirror/gentoo.git priority: 10 sync-git-verify-commit-signature: true NuLL3rr0r location: /usr/local/portage masters: gentoo priority: 50 flatpak-overlay location: /var/lib/layman/flatpak-overlay masters: gentoo priority: 50 ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt" 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" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/var/cache/portage/distfiles" EMERGE_DEFAULT_OPTS="--jobs=8 --load-average=8 --keep-going --with-bdeps=y" 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="-march=native -O2 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg ccache 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="-march=native -O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--sort-common -Wl,--as-needed" LINGUAS="en_US en fa_IR fa nl_NL nl" MAKEOPTS="-j9 -l8" PKGDIR="/var/cache/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="X a52 aac acl acpi alsa amd64 bluetooth branding bzip2 cairo cdda cdr cli crypt cups dbus dri dts dvd dvdr elogind emboss encode exif flac fortran gdbm gif gpm gtk gui iconv icu ipv6 jpeg lcms libglvnd libnotify libtirpc lm-sensors mad mng mp3 mp4 mpeg multilib ncurses nls nptl ogg opengl openmp pam pango pcre pdf png policykit ppds pulseaudio qt5 readline sdl seccomp spell split-usr ssl startup-notification svg tcpd tiff truetype udev udisks unicode upower usb vorbis wxwidgets x264 xattr xcb xml xv xvid zlib" ABI_X86="64" ADA_TARGET="gnat_2019" ALSA_CARDS="hda-intel" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 f16c fma3 mmx mmxext pclmul popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" 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="joystick keyboard libinput mouse" KERNEL="linux" L10N="en-US en fa-IR fa nl-NL nl" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LLVM_TARGETS="BPF NVPTX X86" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-3 php7-4" POSTGRES_TARGETS="postgres13" PYTHON_SINGLE_TARGET="python3_9" PYTHON_TARGETS="python3_9" 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
Created attachment 745452 [details] build log
Please also see https://bugs.gentoo.org/show_bug.cgi?id=818688
Like posted in the other bug, your LLVM toolchain is broken. This is not a problem in Firefox nor Spidermonkey. LIke you can see, it is failing when checking for properly working LLVM... I can only recommend to rebuild complete LLVM toolchain (DEPS and RDEPS).
Thank you! Tee KOBAYASHI's suggestion solved it for me. $ emerge -1 sys-devel/llvm:12 sys-devel/clang:12
