root@sipeed / # emerge --info '=sys-devel/gcc-11.2.1_p20211127::gentoo'
Portage 3.0.28 (python 3.9.9-final-0, default/linux/riscv/20.0/rv64gc/lp64d/desktop/plasma/systemd, gcc-11.2.0, glibc-2.34-r2, 5.4.61 riscv64)
=================================================================
                         System Settings
=================================================================
System uname: Linux-5.4.61-riscv64-with-glibc2.34
KiB Mem:     2044820 total,    490348 free
KiB Swap:   10222568 total,  10141416 free
Timestamp of repository gentoo: Sun, 28 Nov 2021 16:15:01 +0000
Head commit of repository gentoo: 974850071b52976ff65a1e3dadec57f5a5a314e5
sh bash 5.1_p12
ld GNU ld (Gentoo 2.37_p1 p1) 2.37
app-shells/bash:          5.1_p12::gentoo
dev-lang/perl:            5.34.0-r5::gentoo
dev-lang/python:          3.9.9::gentoo, 3.10.0_p1::gentoo
dev-util/cmake:           3.22.0::gentoo
sys-apps/baselayout:      2.8::gentoo
sys-apps/sandbox:         2.29::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-r1::gentoo
sys-devel/gcc:            11.2.0::gentoo
sys-devel/gcc-config:     2.5-r1::gentoo
sys-devel/libtool:        2.4.6-r6::gentoo
sys-devel/make:           4.3::gentoo
sys-kernel/linux-headers: 5.15::gentoo (virtual/os-headers)
sys-libs/glibc:           2.34-r2::gentoo
Repositories:

gentoo
    location: /var/db/repos/gentoo
    sync-type: rsync
    sync-uri: rsync://rsync.mirrors.ustc.edu.cn/gentoo-portage/
    priority: -1000
    sync-rsync-extra-opts:
    sync-rsync-verify-jobs: 1
    sync-rsync-verify-metamanifest: no
    sync-rsync-verify-max-age: 24

ACCEPT_KEYWORDS="riscv ~riscv"
ACCEPT_LICENSE="*"
CBUILD="riscv64-unknown-linux-gnu"
CFLAGS="-O3 -pipe"
CHOST="riscv64-unknown-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O3 -pipe"
DISTDIR="/var/cache/distfiles"
EMERGE_DEFAULT_OPTS="--keep-going --with-bdeps=y --autounmask-write=y -l"
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="-O3 -pipe"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned qa-unresolved-soname-deps sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch usersync xattr"
FFLAGS="-O3 -pipe"
GENTOO_MIRRORS="https://mirrors.ustc.edu.cn/gentoo/"
LANG="C.UTF8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="en_US zh_CN en zh"
MAKEOPTS="-j1"
PKGDIR="/var/cache/binpkgs"
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 activities alsa bluetooth branding bzip2 cairo cdda cdr cli crypt cups dbus declarative dri dts dvd dvdr emboss encode exif flac fortran gdbm gif gpm gtk gui iconv icu ipv6 jpeg kde kipi kwallet lcms libglvnd libnotify mad mng mp3 mp4 mpeg ncurses nls nptl ogg opengl openmp pam pango pcre pdf plasma png policykit ppds qml qt5 readline riscv sdl seccomp semantic-desktop spell split-usr ssl startup-notification svg systemd tiff truetype udev udisks unicode upower usb vorbis widgets wxwidgets x264 xattr xcb xml xv xvid zlib" ADA_TARGET="gnat_2020" 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" 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" GRUB_PLATFORMS="efi-64" INPUT_DEVICES="libinput evdev" KERNEL="linux" L10N="en-US zh-CN en zh" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LLVM_TARGETS="RISCV" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-3 php7-4" POSTGRES_TARGETS="postgres12 postgres13" PYTHON_SINGLE_TARGET="python3_9" PYTHON_TARGETS="python3_9" RUBY_TARGETS="ruby30" USERLAND="GNU" VIDEO_CARDS="fbdev" 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