emerge --info '=sci-geosciences/qgis-3.10.0::gentoo'

Portage 2.3.79 (python 3.6.9-final-0, default/linux/amd64/17.0/desktop/plasma, gcc-8.3.0, glibc-2.29-r2, 4.19.23-gentoo x86_64)
=================================================================
                         System Settings
=================================================================
System uname: Linux-4.19.23-gentoo-x86_64-Intel-R-_Core-TM-_i5-3230M_CPU_@_2.60GHz-with-gentoo-2.6
KiB Mem:     8048976 total,   1728740 free
KiB Swap:   25165816 total,  25165816 free
Timestamp of repository gentoo: Mon, 02 Dec 2019 21:00:01 +0000
Head commit of repository gentoo: d06bc9ad8b29cbafe08a4842022a089e3fc94abd
Head commit of repository brother-overlay: 2968d8f5391275167e9af4100f46d0c6fae27c1d

sh bash 4.4_p23-r1
ld GNU ld (Gentoo 2.32 p2) 2.32.0
ccache version 3.7.4 [disabled]
app-shells/bash:          4.4_p23-r1::gentoo
dev-java/java-config:     2.2.0-r4::gentoo
dev-lang/perl:            5.30.0::gentoo
dev-lang/python:          2.7.16::gentoo, 3.6.9::gentoo
dev-util/ccache:          3.7.4::gentoo
dev-util/cmake:           3.14.6::gentoo
dev-util/pkgconfig:       0.29.2::gentoo
sys-apps/baselayout:      2.6-r1::gentoo
sys-apps/openrc:          0.41.2::gentoo
sys-apps/sandbox:         2.13::gentoo
sys-devel/autoconf:       2.13-r1::gentoo, 2.69-r4::gentoo
sys-devel/automake:       1.13.4-r2::gentoo, 1.16.1-r1::gentoo
sys-devel/binutils:       2.32-r1::gentoo
sys-devel/gcc:            8.3.0-r1::gentoo, 9.2.0-r2::gentoo
sys-devel/gcc-config:     2.1::gentoo
sys-devel/libtool:        2.4.6-r3::gentoo
sys-devel/make:           4.2.1-r4::gentoo
sys-kernel/linux-headers: 4.19::gentoo (virtual/os-headers)
sys-libs/glibc:           2.29-r2::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: rsync
    sync-uri: rsync://rsync.gentoo.org/gentoo-portage
    priority: -1000
    sync-rsync-verify-max-age: 24
    sync-rsync-extra-opts:
    sync-rsync-verify-jobs: 1
    sync-rsync-verify-metamanifest: yes

vince-repo
    location: /usr/local/portage/vince-repo
    masters: gentoo

enlightenment-live
    location: /var/lib/layman/enlightenment-live
    sync-type: laymansync
    sync-uri: https://github.com/rafspiny/enlightenment-live.git
    masters: gentoo
    priority: 50

science
    location: /var/lib/layman/science
    sync-type: laymansync
    sync-uri: https://anongit.gentoo.org/git/proj/sci.git
    masters: gentoo
    priority: 50

brother-overlay
    location: /usr/local/portage/brother-overlay
    sync-type: git
    sync-uri: https://github.com/stefan-langenmaier/brother-overlay.git
    masters: gentoo
    priority: 9999

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="@FREE"
CBUILD="x86_64-pc-linux-gnu"
CC="gcc"
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"
CPPFLAGS="-march=native -O2 -pipe"
CXX="g++"
CXXFLAGS="-march=native -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN 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 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 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="it_IT.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j1"
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="/tmp"
USE="X a52 aac acl acpi activities alsa amd64 bash-completion berkdb blas bluetooth branding bzip2 cairo cdda cdr cli consolekit crypt cryptsetup cups curl cxx dbus declarative designer djvu dri dts dvd dvdr emboss encode exif fam ffmpeg flac fortran gdbm geoip geolocation geos gif gpm gzip hpcups iconv icu imagemagick introspection ipv6 java javascript jpeg jpeg2k kde kerberos kipi kwallet lapack lcms ldap libass libcaca libnotify libtirpc logrotate lzma lzo mad matroska mime mms mng mozilla mp3 mp4 mpeg mtp multilib musicbrainz ncurses netcdf networkmanager nfsv4 nfsv41 nls nptl odbc ogg opencl opengl openmp openssl pam pango pcmcia pcre pcsc-lite pdf phonon plasma png policykit postscript ppds pulseaudio python qml qt5 quicktime raw rdp readline rss samba scanner sdl seccomp semantic-desktop smp snmp sockets sound spell split-usr sql sqlite ssl startup-notification svg szip taglib tcpd theora threads tiff tk truetype udev udisks unicode upnp upnp-av upower usb uuid v4l vnc vorbis wavpack webkit widgets wifi wxwidgets x264 xattr xcb xcomposite xinerama xml xpm xv xvid zip 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="mmx mmxext sse sse2" 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="pc multiboot qemu" INPUT_DEVICES="libinput mouse keyboard synaptics" KERNEL="linux" L10N="it en" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="scripting-python" NETBEANS_MODULES="apisupport cnd groovy gsf harness ide identity j2ee java mobility nb php profiler soa visualweb webcommon websvccommon xml" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6" RUBY_TARGETS="ruby24 ruby25" SANE_BACKENDS="hp" USERLAND="GNU" VIDEO_CARDS="intel i965 r600 vmware" 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:  CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

=================================================================
                        Package Settings
=================================================================

sci-geosciences/qgis-3.10.0::gentoo was built with the following:
USE="georeferencer grass netcdf polar python qml webkit -3d -examples -hdf5 -mapserver -opencl -oracle -postgres" ABI_X86="(64)" PYTHON_SINGLE_TARGET="python3_6 -python3_7" PYTHON_TARGETS="python3_6 -python3_7"