I have a lot of toolchains installed, (most) everything is rebuilt against/with gcc-6.4.0 and latest glibc/binutils. With LLVM 5 installed I get a linker error because it can't find proper version of GLIBCXX (required by llvm): /usr/x86_64-pc-linux-gnu/bin/ar: /var/tmp/portage/sys-devel/gcc-5.4.0-r4/work/build/x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6: version `GLIBCXX_3.4.22' not found (required by /usr/lib/llvm/5/lib64/../lib64/libLLVMSupport.so.5) ../libtool: line 1132: 1123 Segmentation fault /usr/x86_64-pc-linux-gnu/bin/ar rc .libs/libstdc++.a compatibility.o compatibility-debug_list.o compatibility-debug_list-2.o compatibility-c++0x.o compatibility-atomic-c++0x.o compatibility-thread-c++0x.o compatibility-chrono.o compatibility-condvar.o .libs/libstdc++.lax/libsupc++convenience.a/atexit_thread.o .libs/libstdc++.lax/libsupc++convenience.a/function_type_info.o .libs/libstdc++.lax/libsupc++convenience.a/eh_call.o .libs/libstdc++.lax/libsupc++convenience.a/pmem_type_info.o .libs/libstdc++.lax/libsupc++convenience.a/eh_ptr.o .libs/libstdc++.lax/libsupc++convenience.a/eh_arm.o .libs/libstdc++.lax/libsupc++convenience.a/tinfo2.o .libs/libstdc++.lax/libsupc++convenience.a/eh_throw.o .libs/libstdc++.lax/libsupc++convenience.a/array_type_info.o .libs/libstdc++.lax/libsupc++convenience.a/atexit_arm.o .libs/libstdc++.lax/libsupc++convenience.a/hash_bytes.o .libs/libstdc++.lax/libsupc++convenience.a/del_ops.o .libs/libstdc++.lax/libsupc++convenience.a/tinfo.o .libs/libstdc++.lax/libsupc++convenience.a/bad_array_new.o .libs/libstdc++.lax/libsupc++convenience.a/vec.o .libs/libstdc++.lax/libsupc++convenience.a/pointer_type_info.o .libs/libstdc++.lax/libsupc++convenience.a/class_type_info.o .libs/libstdc++.lax/libsupc++convenience.a/del_opv.o .libs/libstdc++.lax/libsupc++convenience.a/del_op.o .libs/libstdc++.lax/libsupc++convenience.a/del_opnt.o .libs/libstdc++.lax/libsupc++convenience.a/fundamental_type_info.o .libs/libstdc++.lax/libsupc++convenience.a/del_opvs.o .libs/libstdc++.lax/libsupc++convenience.a/pbase_type_info.o .libs/libstdc++.lax/libsupc++convenience.a/vmi_class_type_info.o .libs/libstdc++.lax/libsupc++convenience.a/new_opnt.o .libs/libstdc++.lax/libsupc++convenience.a/eh_type.o .libs/libstdc++.lax/libsupc++convenience.a/pure.o .libs/libstdc++.lax/libsupc++convenience.a/bad_typeid.o .libs/libstdc++.lax/libsupc++convenience.a/dyncast.o .libs/libstdc++.lax/libsupc++convenience.a/new_opv.o .libs/libstdc++.lax/libsupc++convenience.a/eh_aux_runtime.o .libs/libstdc++.lax/libsupc++convenience.a/del_opvnt.o .libs/libstdc++.lax/libsupc++convenience.a/enum_type_info.o .libs/libstdc++.lax/libsupc++convenience.a/eh_exception.o .libs/libstdc++.lax/libsupc++convenience.a/bad_array_length.o .libs/libstdc++.lax/libsupc++convenience.a/si_class_type_info.o .libs/libstdc++.lax/libsupc++convenience.a/new_handler.o .libs/libstdc++.lax/libsupc++convenience.a/eh_catch.o .libs/libstdc++.lax/libsupc++convenience.a/eh_term_handler.o .libs/libstdc++.lax/libsupc++convenience.a/eh_unex_handler.o .libs/libstdc++.lax/libsupc++convenience.a/bad_alloc.o .libs/libstdc++.lax/libsupc++convenience.a/vterminate.o .libs/libstdc++.lax/libsupc++convenience.a/cp-demangle.o .libs/libstdc++.lax/libsupc++convenience.a/eh_alloc.o .libs/libstdc++.lax/libsupc++convenience.a/new_op.o .libs/libstdc++.lax/libsupc++convenience.a/guard.o .libs/libstdc++.lax/libsupc++convenience.a/eh_tm.o .libs/libstdc++.lax/libsupc++convenience.a/guard_error.o .libs/libstdc++.lax/libsupc++convenience.a/new_opvnt.o .libs/libstdc++.lax/libsupc++convenience.a/eh_personality.o .libs/libstdc++.lax/libsupc++convenience.a/nested_exception.o .libs/libstdc++.lax/libsupc++convenience.a/bad_cast.o .libs/libstdc++.lax/libsupc++convenience.a/eh_terminate.o .libs/libstdc++.lax/libsupc++convenience.a/eh_globals.o .libs/libstdc++.lax/libsupc++convenience.a/vtv_stubs.o .libs/libstdc++.lax/libc++98convenience.a/math_stubs_float.o .libs/libstdc++.lax/libc++98convenience.a/ios_failure.o .libs/libstdc++.lax/libc++98convenience.a/codecvt_members.o .libs/libstdc++.lax/libc++98convenience.a/istream-string.o .libs/libstdc++.lax/libc++98convenience.a/list-aux.o .libs/libstdc++.lax/libc++98convenience.a/monetary_members.o .libs/libstdc++.lax/libc++98convenience.a/pool_allocator.o .libs/libstdc++.lax/libc++98convenience.a/parallel_settings.o .libs/libstdc++.lax/libc++98convenience.a/basic_file.o .libs/libstdc++.lax/libc++98convenience.a/locale_init.o .libs/libstdc++.lax/libc++98convenience.a/c++locale.o .libs/libstdc++.lax/libc++98convenience.a/valarray.o .libs/libstdc++.lax/libc++98convenience.a/monetary_members_cow.o .libs/libstdc++.lax/libc++98convenience.a/hash_tr1.o .libs/libstdc++.lax/libc++98convenience.a/ext-inst.o .libs/libstdc++.lax/libc++98convenience.a/strstream.o .libs/libstdc++.lax/libc++98convenience.a/misc-inst.o .libs/libstdc++.lax/libc++98convenience.a/numeric_members.o .libs/libstdc++.lax/libc++98convenience.a/ios_init.o .libs/libstdc++.lax/libc++98convenience.a/locale_facets.o .libs/libstdc++.lax/libc++98convenience.a/math_stubs_long_double.o .libs/libstdc++.lax/libc++98convenience.a/messages_members_cow.o .libs/libstdc++.lax/libc++98convenience.a/stdexcept.o .libs/libstdc++.lax/libc++98convenience.a/collate_members.o .libs/libstdc++.lax/libc++98convenience.a/mt_allocator.o .libs/libstdc++.lax/libc++98convenience.a/codecvt.o .libs/libstdc++.lax/libc++98convenience.a/istream.o .libs/libstdc++.lax/libc++98convenience.a/list.o .libs/libstdc++.lax/libc++98convenience.a/numeric_members_cow.o .libs/libstdc++.lax/libc++98convenience.a/collate_members_cow.o .libs/libstdc++.lax/libc++98convenience.a/globals_io.o .libs/libstdc++.lax/libc++98convenience.a/streambuf.o .libs/libstdc++.lax/libc++98convenience.a/time_members.o .libs/libstdc++.lax/libc++98convenience.a/concept-inst.o .libs/libstdc++.lax/libc++98convenience.a/bitmap_allocator.o .libs/libstdc++.lax/libc++98convenience.a/list-aux-2.o .libs/libstdc++.lax/libc++98convenience.a/allocator-inst.o .libs/libstdc++.lax/libc++98convenience.a/cow-istream-string.o .libs/libstdc++.lax/libc++98convenience.a/complex_io.o .libs/libstdc++.lax/libc++98convenience.a/locale.o .libs/libstdc++.lax/libc++98convenience.a/atomicity.o .libs/libstdc++.lax/libc++98convenience.a/localename.o .libs/libstdc++.lax/libc++98convenience.a/ios_locale.o .libs/libstdc++.lax/libc++98convenience.a/hashtable_tr1.o .libs/libstdc++.lax/libc++98convenience.a/tree.o .libs/libstdc++.lax/libc++98convenience.a/list_associated-2.o .libs/libstdc++.lax/libc++98convenience.a/messages_members.o .libs/libstdc++.lax/libc++98convenience.a/list_associated.o .libs/libstdc++.lax/libc++11convenience.a/sstream-inst.o .libs/libstdc++.lax/libc++11convenience.a/ostream-inst.o .libs/libstdc++.lax/libc++11convenience.a/random.o .libs/libstdc++.lax/libc++11convenience.a/cow-stdexcept.o .libs/libstdc++.lax/libc++11convenience.a/system_error.o .libs/libstdc++.lax/libc++11convenience.a/ctype.o .libs/libstdc++.lax/libc++11convenience.a/wstring-inst.o .libs/libstdc++.lax/libc++11convenience.a/cow-fstream-inst.o .libs/libstdc++.lax/libc++11convenience.a/hashtable_c++0x.o .libs/libstdc++.lax/libc++11convenience.a/cow-wstring-inst.o .libs/libstdc++.lax/libc++11convenience.a/cxx11-hash_tr1.o .libs/libstdc++.lax/libc++11convenience.a/cow-string-inst.o .libs/libstdc++.lax/libc++11convenience.a/string-inst.o .libs/libstdc++.lax/libc++11convenience.a/regex.o .libs/libstdc++.lax/libc++11convenience.a/functexcept.o .libs/libstdc++.lax/libc++11convenience.a/locale-inst.o .libs/libstdc++.lax/libc++11convenience.a/ios-inst.o .libs/libstdc++.lax/libc++11convenience.a/istream-inst.o .libs/libstdc++.lax/libc++11convenience.a/shared_ptr.o .libs/libstdc++.lax/libc++11convenience.a/ios.o .libs/libstdc++.lax/libc++11convenience.a/debug.o .libs/libstdc++.lax/lt1-codecvt.o .libs/libstdc++.lax/libc++11convenience.a/snprintf_lite.o .libs/libstdc++.lax/libc++11convenience.a/futex.o .libs/libstdc++.lax/libc++11convenience.a/ctype_members.o .libs/libstdc++.lax/libc++11convenience.a/chrono.o .libs/libstdc++.lax/libc++11convenience.a/cow-sstream-inst.o .libs/libstdc++.lax/libc++11convenience.a/cow-shim_facets.o .libs/libstdc++.lax/libc++11convenience.a/cxx11-ios_failure.o .libs/libstdc++.lax/libc++11convenience.a/hash_c++0x.o .libs/libstdc++.lax/libc++11convenience.a/condition_variable.o .libs/libstdc++.lax/libc++11convenience.a/functional.o .libs/libstdc++.lax/libc++11convenience.a/cxx11-wlocale-inst.o .libs/libstdc++.lax/libc++11convenience.a/streambuf-inst.o .libs/libstdc++.lax/libc++11convenience.a/fstream-inst.o .libs/libstdc++.lax/libc++11convenience.a/placeholders.o .libs/libstdc++.lax/libc++11convenience.a/ext11-inst.o .libs/libstdc++.lax/libc++11convenience.a/cow-locale_init.o .libs/libstdc++.lax/libc++11convenience.a/cxx11-stdexcept.o .libs/libstdc++.lax/libc++11convenience.a/iostream-inst.o .libs/libstdc++.lax/libc++11convenience.a/cxx11-locale-inst.o .libs/libstdc++.lax/libc++11convenience.a/mutex.o .libs/libstdc++.lax/libc++11convenience.a/limits.o .libs/libstdc++.lax/libc++11convenience.a/thread.o .libs/libstdc++.lax/libc++11convenience.a/future.o .libs/libstdc++.lax/libc++11convenience.a/ctype_configure_char.o .libs/libstdc++.lax/libc++11convenience.a/cxx11-shim_facets.o .libs/libstdc++.lax/libc++11convenience.a/wlocale-inst.o make[6]: *** [Makefile:605: libstdc++.la] Error 139 make[6]: Leaving directory '/var/tmp/portage/sys-devel/gcc-5.4.0-r4/work/build/x86_64-pc-linux-gnu/libstdc++-v3/src' make[5]: *** [Makefile:637: all-recursive] Error 1 make[5]: Leaving directory '/var/tmp/portage/sys-devel/gcc-5.4.0-r4/work/build/x86_64-pc-linux-gnu/libstdc++-v3/src' make[4]: *** [Makefile:507: all-recursive] Error 1 make[4]: Leaving directory '/var/tmp/portage/sys-devel/gcc-5.4.0-r4/work/build/x86_64-pc-linux-gnu/libstdc++-v3' make[3]: *** [Makefile:414: all] Error 2 make[3]: Leaving directory '/var/tmp/portage/sys-devel/gcc-5.4.0-r4/work/build/x86_64-pc-linux-gnu/libstdc++-v3' make[2]: *** [Makefile:13209: all-stage1-target-libstdc++-v3] Error 2 make[2]: Leaving directory '/var/tmp/portage/sys-devel/gcc-5.4.0-r4/work/build' make[1]: *** [Makefile:22298: stage1-bubble] Error 2 make[1]: Leaving directory '/var/tmp/portage/sys-devel/gcc-5.4.0-r4/work/build' make: *** [Makefile:22630: bootstrap-lean] Error 2 If I remove llvm5 it compiles fine. # emerge llvm:5 --nodeps -v1p These are the packages that would be merged, in order: [ebuild R ] sys-devel/llvm-5.0.0:5::gentoo USE="doc gold libffi ncurses -debug -libedit {-test}" ABI_X86="32 (64) (-x32)" LLVM_TARGETS="AMDGPU BPF NVPTX (X86) -AArch64 -ARM -Hexagon -Lanai -MSP430 -Mips -PowerPC -Sparc -SystemZ -XCore" 0 KiB Total: 1 package (1 reinstall), Size of downloads: 0 KiB * IMPORTANT: 2 news items need reading for repository 'gentoo'. * Use eselect news read to view new items. # gcc-config -l [1] aarch64-unknown-linux-gnu-5.4.0 [2] aarch64-unknown-linux-gnu-5.4.0-vanilla [3] aarch64-unknown-linux-gnu-6.4.0 * [4] armv7a-hardfloat-linux-gnueabi-4.9.4 * [5] armv7a-hardfloat-linux-gnueabi-5.4.0 [6] armv7a-hardfloat-linux-gnueabi-5.4.0-hardenednopie [7] armv7a-hardfloat-linux-gnueabi-5.4.0-hardenednopiessp [8] armv7a-hardfloat-linux-gnueabi-5.4.0-hardenednossp [9] armv7a-hardfloat-linux-gnueabi-5.4.0-vanilla [10] armv7a-hardfloat-linux-gnueabi-6.4.0 [11] armv7m-hardfloat-eabi-5.4.0 * [12] armv7m-hardfloat-eabi-5.4.0-hardenednopie [13] armv7m-hardfloat-eabi-5.4.0-vanilla [14] armv7m-hardfloat-eabi-6.4.0 [15] avr-6.4.0 * [16] x86_64-pc-linux-gnu-5.4.0 [17] x86_64-pc-linux-gnu-5.4.0-hardenednopie [18] x86_64-pc-linux-gnu-5.4.0-hardenednopiessp [19] x86_64-pc-linux-gnu-5.4.0-hardenednossp [20] x86_64-pc-linux-gnu-5.4.0-vanilla [21] x86_64-pc-linux-gnu-6.3.0 [22] x86_64-pc-linux-gnu-6.4.0 * [23] x86_64-pc-linux-gnu-7.1.0 [24] x86_64-pc-linux-gnu-7.2.0
Portage 2.3.11 (python 2.7.14-final-0, hardened/linux/amd64, gcc-6.4.0, glibc-2.25-r7, 4.9.16-gentoo x86_64) ================================================================= System uname: Linux-4.9.16-gentoo-x86_64-AMD_FX-tm-6300_Six-Core_Processor-with-gentoo-2.4.1 KiB Mem: 8170760 total, 1031496 free KiB Swap: 20971512 total, 20955380 free Timestamp of repository gentoo: Sat, 14 Oct 2017 10:30:01 +0000 Head commit of repository gentoo: 9e9f01ea79ce539bf90cadd29e124da60222c872 Head commit of repository arm_support: fdfedc80436c20c6fe94bdf610591a5453e01889 Head commit of repository nerdboy: 3a481ba70f72c46a1ad688a7d96dcc6f1b401d0d sh bash 4.4_p12 ld GNU gold (Gentoo 2.29.1 p1.0 2.29.1) 1.14 ccache version 3.3.4 [enabled] app-shells/bash: 4.4_p12::gentoo dev-lang/perl: 5.26.1::gentoo dev-lang/python: 2.7.14::gentoo, 3.4.6::gentoo, 3.5.4::gentoo dev-util/ccache: 3.3.4-r1::gentoo dev-util/cmake: 3.9.4::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.4.1-r2::gentoo sys-apps/openrc: 0.33::gentoo sys-apps/sandbox: 2.12::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69-r4::gentoo sys-devel/automake: 1.11.6-r2::gentoo, 1.13.4-r1::gentoo, 1.15.1-r1::gentoo sys-devel/binutils: 2.27-r1::gentoo, 2.28-r2::gentoo, 2.28.1::gentoo, 2.29::gentoo, 2.29.1::gentoo sys-devel/gcc: 5.4.0-r3::gentoo, 6.3.0::ada, 6.4.0::gentoo, 7.1.0-r1::ada, 7.2.0::ada sys-devel/gcc-config: 1.9.0::gentoo sys-devel/libtool: 2.4.6-r4::gentoo sys-devel/make: 4.2.1-r1::gentoo sys-kernel/linux-headers: 4.13::gentoo (virtual/os-headers) sys-libs/glibc: 2.25-r7::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-umask: 022 sync-uri: rsync://gentoo/gentoo-portage sync-user: portage:portage priority: -1000 eclass-overrides: nerdboy sync-rsync-extra-opts: arm_support location: /usr/local/arm sync-type: git sync-umask: 022 sync-uri: https://github.com/gentoo/arm.git sync-user: portage:portage masters: gentoo nerdboy location: /usr/local/portage sync-type: git sync-umask: 022 sync-uri: https://github.com/sarnold/portage-overlay.git sync-user: portage:portage masters: gentoo ada location: /var/lib/layman/ada sync-type: laymansync sync-umask: 022 sync-uri: git://github.com/sarnold/ada-overlay.git sync-user: portage:portage masters: gentoo priority: 50 ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA @GPL-COMPATIBLE @OSI-APPROVED @EULA dlj-1.1 skype-eula googleearth AdobeFlash-10.1" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=athlon64 -mtune=bdver1 -O2 -pipe -flto=6 -ftree-vectorize -floop-interchange -ftree-loop-distribution -floop-strip-mine -floop-block" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /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 /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=athlon64 -mtune=bdver1 -O2 -pipe -flto=6 -ftree-vectorize -floop-interchange -ftree-loop-distribution -floop-strip-mine -floop-block" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs ccache config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.utf8" LDFLAGS="-march=athlon64 -mtune=bdver1 -O2 -pipe -flto=6 -ftree-vectorize -floop-interchange -ftree-loop-distribution -floop-strip-mine -floop-block -fuse-linker-plugin" MAKEOPTS="-j7" PKGDIR="/usr/portage/packages" PORTAGE_BZIP2_COMMAND="/bin/bzip2" 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 ada alsa amd64 amr apache2 apng aspell avahi berkdb bluetooth bzip2 bzlib cairo caps cdda cdr cli consolekit cracklib crypt cups curl cxx dbus diff djvu dnotify dri drm dts dvd eds enchant exif expat fam firefox3 flac fortran gbm gd gdbm gif git glade glamor gmp gnome-keyring gnome-online-accounts gnutls graphite gstreamer gtk gtk3 hardened iconv icu imagemagick inotify introspection ipv6 jpeg json justify lcms ldap libav libnotify libsecret libvirt lua lz4 mng modules mp3 multilib nautilus ncurses networking networkmanager nfs nls nptl nptlonly nsplugin ogg opengl openmp orc pam pango pax_kernel pcre pda pdf pic pie pkcs11 png policykit postgres pulseaudio python qt5 readline rtc samba sasl sdl seamonkey seccomp session sip slp snmp spell sqlite ssh ssl ssp startup-notification svg system-cairo system-harfbuzz system-icu system-jpeg system-libvpx system-sqlite tcl tcpd text theora threads thunar tiff tk truetype udev udisks unicode upower urandom usb v4l vaapi vala vdpau vorbis wayland webp wheel wifi x264 xa xattr xcb xkb xml xtpax xvmc zeroconf zlib" ABI_X86="64 32" ALSA_CARDS="emu10k1 hda-intel usb-audio" APACHE2_MODULES="actions alias auth_digest auth_basic authn_alias access_compat authn_core authn_dbd authz_core cache_disk cern_meta cgi cgid charset_lite authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache 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 proxy proxy_connect proxy_http rewrite setenvif speling status unique_id userdir usertrack vhost_alias unixd socache_shmcb" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="adc65 agfa_cl20 aox ax203 barbie canon casio_qv clicksmart310 digigr8 digita dimagev dimera3500 directory enigma13 fuji gsmart300 hp215 iclick jamcam jd11 jl2005a jl2005c kodak_dc120 kodak_dc210 kodak_dc240 kodak_dc3200 kodak_ez200 konica konica_qm150 largan lg_gsm mars mustek panasonic_coolshot panasonic_l859 panasonic_dc1000 panasonic_dc1580 pccam300 pccam600 pentax polaroid_pdc320 polaroid_pdc640 polaroid_pdc700 ptp2 ricoh ricoh_g3 samsung sierra sipix_blink2 sipix_web2 smal sonix sony_dscf1 sony_dscf55 soundvision spca50x sq905 st2205 stv0674 stv0680 sx330z toshiba_pdrm11 topfield tp6801" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx f16c fma3 fma4 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 xop" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="efi-32 efi-64 pc" INPUT_DEVICES="keyboard mouse joystick evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-minimizer wiki-publisher" LINGUAS="en_US en" NETBEANS_MODULES="apisupport java javafx profiler websvccommon cnd dlight ergonomics groovy mobility webcommon" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6" POSTGRES_TARGETS="postgres9_5" PYTHON_SINGLE_TARGET="python3_4" PYTHON_TARGETS="python2_7 python3_4 python3_5 pypy" QEMU_SOFTMMU_TARGETS="arm aarch64 i386 mips64 mipsel ppc ppc64 x86_64" QEMU_USER_TARGETS="arm aarch64 i386 mips64 mipsel ppc ppc64 x86_64" RUBY_TARGETS="ruby24 ruby23 ruby22" SANE_BACKENDS="net" USERLAND="GNU" VIDEO_CARDS="fbdev radeon r600" 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, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
please provide build.log and gcc's config.log.
Created attachment 501502 [details] build logs logs from gcc-5.4.0 llvm linker fail
Created attachment 501504 [details] config.log from parent dir
1. odd 'gcc' in PATH > $ /var/tmp/portage/sys-devel/gcc-5.4.0-r4/work/gcc-5.4.0/configure --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu CC=/var/tmp/portage/sys-devel/gcc-5.4.0-r4/work/gnat_bootstrap/usr/ bin/gcc CXX=/var/tmp/portage/sys-devel/gcc-5.4.0-r4/work/gnat_bootstrap/usr/bin/g++ What is 'gnat_bootstrap/usr/bin/gcc'? Is it a binary or wrapper? If it's a binary I wonder what toolchain it bring with it. 2. Does =sys-devel/gcc-5.4.0-r3 from ::gentoo fail the same for you? 3. /usr/x86_64-pc-linux-gnu/bin/ar: /var/tmp/portage/sys-devel/gcc-5.4.0-r4/work/build/x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6: version `GLIBCXX_3.4.22' not found (required by /usr/lib/llvm/5/lib64/../lib64/libLLVMSupport.so.5) This is the most confusing error. You might have to go to builddir and run 'make' from and commands it produces to get the idea where that library comes from.
Same here - I have system built with gcc 7.2.0 and any gcc < 7 won't compile when llvm5 is installed. I confirm that uninstalling llvm is a workaround. I'm attaching build.log of gcc-6.4.0-r1 (gcc-5.4.0 and gcc-4.9.4 fail in a similar fashion).
emerge --info: Portage 2.3.20 (python 3.5.4-final-0, default/linux/amd64/17.0, gcc-7.2.0, glibc-2.26-r5, 4.14.13-gentoo x86_64) ================================================================= System uname: Linux-4.14.13-gentoo-x86_64-Intel-R-_Core-TM-_i7-3770_CPU_@_3.40GHz-with-gentoo-2.4.1 Timestamp of repository gentoo: Tue, 23 Jan 2018 12:30:01 +0000 Head commit of repository gentoo: a8a728b87b182e2022ea0090617f739b6a9e2503 sh bash 4.4_p12-r1 ld GNU ld (Gentoo 2.29.1 p3) 2.29.1 app-shells/bash: 4.4_p12-r1::gentoo dev-java/java-config: 2.2.0-r3::gentoo dev-lang/perl: 5.26.1-r1::gentoo dev-lang/python: 2.7.14-r1::gentoo, 3.5.4-r1::gentoo dev-util/cmake: 3.10.1::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.4.1-r2::gentoo sys-apps/openrc: 0.34.11::gentoo sys-apps/sandbox: 2.12::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69-r4::gentoo sys-devel/automake: 1.15.1-r1::gentoo sys-devel/binutils: 2.29.1-r1::gentoo sys-devel/gcc: 4.9.4::gentoo, 5.4.0-r4::gentoo, 6.4.0::gentoo, 7.2.0-r1::gentoo sys-devel/gcc-config: 1.9.1::gentoo sys-devel/libtool: 2.4.6-r4::gentoo sys-devel/make: 4.2.1-r1::gentoo sys-kernel/linux-headers: 4.14::gentoo (virtual/os-headers) sys-libs/glibc: 2.26-r5::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 sync-rsync-extra-opts: java location: /usr/local/portage/layman/java masters: gentoo priority: 0 haskell location: /usr/local/portage/layman/haskell masters: gentoo priority: 1 x11 location: /usr/local/portage/layman/x11 masters: gentoo priority: 2 moje location: /usr/local/portage/moje masters: gentoo priority: 3 myhaskell location: /usr/local/portage/myhaskell masters: gentoo priority: 4 ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" 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 /usr/share/themes/oxygen-gtk/gtk-2.0" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php7.2/ext-active/ /etc/php/cgi-php7.2/ext-active/ /etc/php/cli-php7.2/ext-active/ /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=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--keep-going" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/" LANG="pl_PL.UTF-8" LC_ALL="pl_PL.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--sort-common -Wl,--as-needed -Wl,--hash-style=gnu" LINGUAS="en pl" MAKEOPTS="-j6" 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 a52 aac acl alsa amd64 berkdb bluray bzip2 cli consolekit crypt cups cxx dbus dri dvd egl faac flac fortran gdbm gif gpm iconv icu ipv6 jpeg kde lame libsamplerate mad modplug modules mp3 mpeg mtp multilib musepack ncurses nls nptl ogg openal opengl openmp opus pam pcre png printsupport qt3support readline schroedinger seccomp spell ssl taglib tcpd theora threads tiff truetype twolame udev unicode vdpau vorbis wavpack x264 x265 xattr xvid 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" 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 isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="pc" INPUT_DEVICES="evdev" KERNEL="linux" L10N="en pl" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6 php7-0" POSTGRES_TARGETS="postgres9_5" PYTHON_SINGLE_TARGET="python3_5" PYTHON_TARGETS="python2_7 python3_5" RUBY_TARGETS="ruby25" SANE_BACKENDS="epson" USERLAND="GNU" VIDEO_CARDS="amdgpu radeon radeonsi nvidia intel i965" 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, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Created attachment 516052 [details] compilation failure of gcc 6.4.0-r1
Likely the same issue as bug #644772 (debugging ongoing).
FYI: until it's fixed, an easier workaround is to rename /usr/lib/llvm/5/lib64/libLLVMSupport.so.5.0.1 for the time of compilation of gcc (for some reason there is no need to do that with corresponding library in lib32 subdir).
*** This bug has been marked as a duplicate of bug 644772 ***
