Hi, I am not sure if this happens because of Gentoo:Prefix but there is glibc-2.12 on a redhat host. >>> Emerging (1 of 2) dev-java/ant-core-1.9.2::gentoo_prefix * apache-ant-1.9.2-src.tar.bz2 SHA256 SHA512 WHIRLPOOL size ;-) ... [ ok ] * ant-1.9.2-gentoo.tar.bz2 SHA256 SHA512 WHIRLPOOL size ;-) ... [ ok ] /scratch/mmokrejs/gentoo/usr/portage/eclass/java-utils-2.eclass: line 295: USE: readonly variable /scratch/mmokrejs/gentoo/usr/portage/eclass/java-utils-2.eclass: line 295: USE: readonly variable /scratch/mmokrejs/gentoo/usr/portage/eclass/java-utils-2.eclass: line 295: USE: readonly variable * Using: icedtea-bin-8 >>> Unpacking source... >>> Unpacking apache-ant-1.9.2-src.tar.bz2 to /scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/work >>> Unpacking ant-1.9.2-gentoo.tar.bz2 to /scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/work >>> Source unpacked in /scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/work >>> Preparing source in /scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/work/apache-ant-1.9.2 ... * Applying various patches (bugfixes/updates) ... * 1.9.1-prefix.patch ... [ ok ] * Done with patching * Adjusting to prefix /scratch/mmokrejs/gentoo * ant ... [ ok ] Rewriting build.xml /scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/temp/environment: line 454: USE: readonly variable /scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/temp/environment: line 454: USE: readonly variable Rewriting attributes Rewriting build.xml >>> Source prepared. >>> Configuring source in /scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/work/apache-ant-1.9.2 ... /scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/temp/environment: line 461: USE: readonly variable /scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/temp/environment: line 461: USE: readonly variable Rewriting attributes Rewriting ./build.xml >>> Source configured. >>> Compiling source in /scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/work/apache-ant-1.9.2 ... ... Bootstrapping Ant Distribution ... Compiling Ant Classes /scratch/mmokrejs/gentoo/opt/icedtea-bin-3.0.1/bin/javac: /lib64/libc.so.6: version `GLIBC_2.14' not found (required by /scratch/mmokrejs/gentoo/opt/icedtea-bin-3.0.1/bin/../lib/amd64/jli/libjli.so) ... Failed compiling Ant classes ! Bootstrap FAILED * ERROR: dev-java/ant-core-1.9.2::gentoo_prefix failed (compile phase): * build failed * * Call stack: * ebuild.sh, line 133: Called __call-ebuildshell 'src_compile' * ebuild.sh, line 542: Called src_compile * environment, line 3997: Called die * The specific snippet of code: * CLASSPATH="$(java-config -t)" ./build.sh ${bsyscp} jars internal_dist $(use_doc javadocs) || die "build failed" * * If you need support, post the output of `emerge --info '=dev-java/ant-core-1.9.2::gentoo_prefix'`, * the complete build log and the output of `emerge -pqv '=dev-java/ant-core-1.9.2::gentoo_prefix'`. !!! When you file a bug report, please include the following information: GENTOO_VM=icedtea-bin-8 CLASSPATH="" JAVA_HOME="/scratch/mmokrejs/gentoo/opt/icedtea-bin-3.0.1" JAVACFLAGS="-source 1.5 -target 1.5" COMPILER="" and of course, the output of emerge --info =ant-core-1.9.2 * The complete build log is located at '/scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/temp/build.log'. * The ebuild environment file is located at '/scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/temp/environment'. * Working directory: '/scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/work/apache-ant-1.9.2' * S: '/scratch/mmokrejs/gentoo/var/tmp/portage/dev-java/ant-core-1.9.2/work/apache-ant-1.9.2' $ emerge --info '=dev-java/ant-core-1.9.2::gentoo_prefix' Portage 2.2.28-prefix (python 2.7.11-final-0, prefix/linux/amd64, gcc-5.3.0, unavailable, 2.6.32-573.12.1.el6.Bull.88.x86_64 x86_64) ================================================================= System Settings ================================================================= System uname: Linux-2.6.32-573.12.1.el6.Bull.88.x86_64-x86_64-Intel-R-_Xeon-R-_CPU_E5-2670_0_@_2.60GHz-with-redhat-6.4-Santiago KiB Mem: 131942764 total, 29537048 free KiB Swap: 65536128 total, 65525100 free Timestamp of repository gentoo_prefix: Mon, 20 Jun 2016 21:57:56 +0000 sh bash 4.3_p39 ld GNU ld (Gentoo 2.24 p1.3) 2.24 app-shells/bash: 4.3_p39::gentoo_prefix dev-java/java-config: 2.2.0-r3::gentoo_prefix dev-lang/perl: 5.24.0-r1::gentoo_prefix dev-lang/python: 2.7.11::gentoo_prefix dev-util/cmake: 3.5.2-r1::gentoo_prefix dev-util/pkgconfig: 0.29.1::gentoo_prefix sys-devel/autoconf: 2.69::gentoo_prefix sys-devel/automake: 1.13.4::gentoo_prefix, 1.14.1::gentoo_prefix, 1.15::gentoo_prefix sys-devel/binutils: 2.24-r2::gentoo_prefix sys-devel/gcc: 4.2.4-r2::gentoo_prefix, 4.8.5::gentoo_prefix, 4.9.3::gentoo_prefix, 5.3.0::gentoo_prefix sys-devel/gcc-config: 1.8-r1::gentoo_prefix sys-devel/libtool: 2.4.6-r1::gentoo_prefix sys-devel/make: 4.2.1::gentoo_prefix sys-kernel/linux-headers: 4.6::gentoo_prefix (virtual/os-headers) Repositories: gentoo_prefix location: /scratch/mmokrejs/gentoo/usr/portage sync-type: rsync sync-uri: rsync://rsync.prefix.bitzolder.nl/gentoo-portage-prefix priority: -1000 aliases: gentoo science location: /scratch/mmokrejs/gentoo/var/lib/layman/science masters: gentoo_prefix priority: 0 haskell location: /scratch/mmokrejs/gentoo/var/lib/layman/haskell masters: gentoo_prefix priority: 1 x-layman location: /scratch/mmokrejs/gentoo/var/lib/layman masters: gentoo_prefix priority: 2 ACCEPT_KEYWORDS="~amd64-linux" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -O2 -pipe -march=native" CHOST="x86_64-pc-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/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-O2 -pipe -O2 -pipe -march=native" DISTDIR="/scratch/mmokrejs/gentoo/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs case-insensitive-fs collision-protect config-protect-if-modified distlocks ebuild-locks fixlafiles force-prefix merge-sync news parallel-fetch preserve-libs protect-owned sfperms strict unknown-features-warn unmerge-logs unmerge-orphans unprivileged userfetch userpriv usersandbox usersync" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://gentoo.wheel.sk/ http://ftp.fi.muni.cz/pub/linux/gentoo/ http://gentoo.mirror.web4u.cz/ rsync://gentoo.mirror.dkm.cz/gentoo/ ftp://gentoo.mirror.web4u.cz/" LDFLAGS="-Wl,-O1" MAKEOPTS="-j4" PKGDIR="/scratch/mmokrejs/gentoo/usr/portage/packages" PORTAGE_CONFIGROOT="/scratch/mmokrejs/gentoo/" 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="/scratch/mmokrejs/gentoo/var/tmp" USE="amd64 berkdb bzip2 cli cracklib crypt cxx dri fortran gdbm iconv ipv6 mmx mmxext modules ncurses nls nptl openmp pcre prefix prefix-guest readline seccomp session sse sse2 ssl tcpd unicode zlib" ABI_X86="64" 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="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="keyboard mouse evdev" 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="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7" RUBY_TARGETS="ruby20 ruby21" USERLAND="GNU" VIDEO_CARDS="amdgpu fbdev intel nouveau radeon radeonsi vesa 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" USE_PYTHON="2.7" Unset: CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
I have only supported recent stable as pinning back the various library versions would be tedious and may cause breakage for people with newer versions. Up till now, I have not made glibc an exception but I must admit that this would give significant gain with minimal effort. I am not going to downgrade my stable chroots as that would effectively mean starting from scratch but I will pin back to 2.21 until it is no longer in tree so this should improve things going forwards. Having said that, the oldest in the tree now is 2.17 so if I were hypothetically doing this already, it still wouldn't cover 2.12. Supporting such ancient versions is not feasible for icedtea-bin and I must point you at the source icedtea package or use oracle-jdk-bin instead. 2.17 is the version used by RHEL 7 and that's been out for two years already.
