* Package:    media-libs/libmng-2.0.3
 * Repository: gentoo
 * Maintainer: graphics@gentoo.org
 * USE:        arm64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox splitdebug test userpriv usersandbox
>>> Unpacking source...
>>> Unpacking libmng-2.0.3.tar.xz to /var/tmp/portage/media-libs/libmng-2.0.3/work
>>> Source unpacked in /var/tmp/portage/media-libs/libmng-2.0.3/work
>>> Preparing source in /var/tmp/portage/media-libs/libmng-2.0.3/work/libmng-2.0.3 ...
 * Running eautoreconf in '/var/tmp/portage/media-libs/libmng-2.0.3/work/libmng-2.0.3' ...
 * Running libtoolize --install --copy --force --automake ...
 [ ok ]
 * Running aclocal -I m4 ...
 [ ok ]
 * Running autoconf --force ...
 [ ok ]
 * Running autoheader ...
 [ ok ]
 * Running automake --add-missing --copy --foreign --force-missing ...
 [ ok ]
 * Running elibtoolize in: libmng-2.0.3/
 *   Applying portage/1.2.0 patch ...
 *   Applying sed/1.5.6 patch ...
 *   Applying as-needed/2.4.3 patch ...
 * Running elibtoolize in: libmng-2.0.3/contrib/gcc/sdl-mngplay/
make -j96 distclean 
/bin/sh ./config.status --recheck
running CONFIG_SHELL=/bin/sh /bin/sh ./configure --prefix=/usr --libdir=/usr/lib64 --with-lcms2 --no-create --no-recursion
checking for a BSD-compatible install... /usr/lib/portage/python3.6/ebuild-helpers/xattr/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for gcc... gcc
checking whether the C compiler works... no
configure: error: in `/var/tmp/portage/media-libs/libmng-2.0.3/work/libmng-2.0.3':
configure: error: C compiler cannot create executables
See `config.log' for more details
make: *** [Makefile:384: config.status] Error 77
 * ERROR: media-libs/libmng-2.0.3::gentoo failed (prepare phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=media-libs/libmng-2.0.3::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=media-libs/libmng-2.0.3::gentoo'`.
 * The complete build log is located at '/var/log/emerge-log/build/media-libs/libmng-2.0.3:20200504-004602.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/media-libs/libmng-2.0.3/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/media-libs/libmng-2.0.3/temp/environment'.
 * Working directory: '/var/tmp/portage/media-libs/libmng-2.0.3/work/libmng-2.0.3'
 * S: '/var/tmp/portage/media-libs/libmng-2.0.3/work/libmng-2.0.3'



emerge --info:
Portage 2.3.99 (python 3.6.10-final-0, default/linux/arm64/17.0, gcc-9.3.0, glibc-2.31-r2, 4.9.0-4-arm64 aarch64)
=================================================================
System uname: Linux-4.9.0-4-arm64-aarch64-with-gentoo-2.7
KiB Mem:   131544964 total,  45894668 free
KiB Swap:          0 total,         0 free
Timestamp of repository gentoo: Mon, 04 May 2020 05:46:50 +0000
sh bash 5.0_p17
ld GNU ld (Gentoo 2.34 p1) 2.34.0
ccache version 3.7.9 [disabled]
app-shells/bash:          5.0_p17::gentoo
dev-lang/perl:            5.30.2::gentoo
dev-lang/python:          2.7.18::gentoo, 3.6.10-r2::gentoo, 3.8.2-r2::gentoo
dev-util/ccache:          3.7.9::gentoo
dev-util/cmake:           3.17.2::gentoo
sys-apps/baselayout:      2.7::gentoo
sys-apps/openrc:          0.42.1::gentoo
sys-apps/sandbox:         2.18::gentoo
sys-devel/autoconf:       2.69-r5::gentoo
sys-devel/automake:       1.16.2::gentoo
sys-devel/binutils:       2.34::gentoo
sys-devel/gcc:            9.3.0::gentoo
sys-devel/gcc-config:     2.2.1::gentoo
sys-devel/libtool:        2.4.6-r6::gentoo
sys-devel/make:           4.3::gentoo
sys-kernel/linux-headers: 5.6::gentoo (virtual/os-headers)
sys-libs/glibc:           2.31-r2::gentoo
Repositories:

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

ACCEPT_KEYWORDS="arm64 ~arm64"
ACCEPT_LICENSE="*"
CBUILD="aarch64-unknown-linux-gnu"
CC="aarch64-unknown-linux-gnu-gcc"
CFLAGS="-O2 -pipe -march=native -g -ggdb -frecord-gcc-switches"
CHOST="aarch64-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/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXX="aarch64-unknown-linux-gnu-g++"
CXXFLAGS="-O2 -pipe -march=native -g -ggdb -frecord-gcc-switches"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--with-bdeps=y -1 -b -k"
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="-O2 -pipe -march=native -g -ggdb -frecord-gcc-switches"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs buildpkg collision-protect 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 sign split-log splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe -march=native -g -ggdb -frecord-gcc-switches"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LANG="en_US.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--defsym=__gentoo_check_ldflags__=0"
MAKEOPTS="-j96"
PKGDIR="/root/.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="acl arm64 berkdb bzip2 cli crypt dri fortran gdbm iconv ipv6 libtirpc ncurses nls nptl openmp pam pcre readline seccomp split-usr ssl tcpd unicode xattr zlib" ADA_TARGET="gnat_2018" 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_ARM="edsp thumb thumb2 v4 v5 v6 v7 v8 vfp vfp-d32 vfpv3 vfpv4" 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="libinput keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" 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" USERLAND="GNU" VIDEO_CARDS="fbdev dummy v4l" 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:  CPPFLAGS, CTARGET, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS