the output of `emerge --info`

emerge-info (text/plain), 6.01 KB, created by ZongyuZ on 2020-07-23 08:31:14 UTC

Portage 2.3.89 (python 3.6.10-final-0, default/linux/amd64/17.0, gcc-9.2.0, glibc-2.29-r7, 5.4.28-gentoo-x86_64 x86_64)
=================================================================
System uname: Linux-5.4.28-gentoo-x86_64-x86_64-AMD_EPYC_7742_64-Core_Processor-with-gentoo-2.6
KiB Mem:  1056724548 total,  81605628 free
KiB Swap:          0 total,         0 free
Timestamp of repository gentoo: Tue, 07 Jul 2020 07:45:01 +0000
Head commit of repository gentoo: f593ae21fe4e8f4f2e92a4c3a802e2f8e9baefb7
sh bash 4.4_p23-r1
ld GNU ld (Gentoo 2.32 p2) 2.32.0
distcc 3.3.3 x86_64-pc-linux-gnu [disabled]
ccache version 3.7.7 [disabled]
app-shells/bash:          4.4_p23-r1::gentoo
dev-java/java-config:     2.2.0-r4::gentoo
dev-lang/perl:            5.30.1::gentoo
dev-lang/python:          2.7.17-r2::gentoo, 3.6.10-r1::gentoo, 3.7.7-r1::gentoo
dev-util/ccache:          3.7.7::gentoo
dev-util/cmake:           3.16.5::gentoo
sys-apps/baselayout:      2.6-r1::gentoo
sys-apps/openrc:          0.42.1::gentoo
sys-apps/sandbox:         2.13::gentoo
sys-devel/autoconf:       2.69-r4::gentoo
sys-devel/automake:       1.16.1-r1::gentoo
sys-devel/binutils:       2.32-r1::gentoo, 2.33.1-r1::gentoo
sys-devel/gcc:            9.2.0-r2::gentoo
sys-devel/gcc-config:     2.2.1::gentoo
sys-devel/libtool:        2.4.6-r6::gentoo
sys-devel/make:           4.2.1-r4::gentoo
sys-kernel/linux-headers: 5.4::gentoo (virtual/os-headers)
sys-libs/glibc:           2.29-r7::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: rsync
    sync-uri: rsync://mirror.tuna.tsinghua.edu.cn/gentoo-portage
    priority: -1000
    sync-rsync-verify-metamanifest: no
    sync-rsync-verify-jobs: 1
    sync-rsync-verify-max-age: 24
    sync-rsync-extra-opts: 

maven
    location: /var/lib/java-ebuilder/maven
    masters: gentoo

R_Overlay
    location: /var/lib/layman/R_Overlay
    masters: gentoo
    priority: 50

jm-overlay
    location: /var/lib/layman/jm-overlay
    masters: gentoo
    priority: 50

sage-on-gentoo
    location: /var/lib/layman/sage-on-gentoo
    masters: gentoo
    priority: 50

science
    location: /var/lib/layman/science
    masters: gentoo
    priority: 50

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="*"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=znver2 -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /usr/share/maven-bin-3.0/conf /usr/share/maven-bin-3.6/conf"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /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=znver2 -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--autounmask --autounmask-write"
ENV_UNSET="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=znver2 -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 test unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync"
FFLAGS="-march=znver2 -O2 -pipe"
GENTOO_MIRRORS="http://mirror.tuna.tsinghua.edu.cn/gentoo"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j256"
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="X acl amd64 berkdb byte-compile bzip2 cli crypt djvu dri dvi eselect-ldso fftw fontforge fortran gdbm git hipify iconv icu ipv6 libtirpc llvm-roc-backend multilib ncurses nls nptl openmp pam pcre readline seccomp split-usr ssl subversion tcpd test threads unicode xattr zlib" ABI_X86="64" ADA_TARGET="gnat_2018" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" 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="abm adx aes avx avx2 bmi1 bmi2 fma3 fpu mmx emmx mmxext nx sha sse sse2 sse3 ssse3 sse4_1 sse4_2 sse4a f16ci cx16 rdrnd rdseed" 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" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LLVM_TARGETS="AMDGPU" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python3_6" RUBY_TARGETS="ruby25" USERLAND="GNU" VIDEO_CARDS="ast" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS