$ icc a.cxx /usr/lib/gcc/x86_64-pc-linux-gnu/4.7.1/include/g++-v4/limits(1405): error: identifier "__int128" is undefined struct numeric_limits<__int128> ^ (and so on...) Portage 2.2.0_alpha120_p33 (default/linux/amd64/10.0/desktop, gcc-4.7.1, glibc-2.15-r2, 3.5.0-pomiocik+ x86_64) ================================================================= System Settings ================================================================= System uname: Linux-3.5.0-pomiocik+-x86_64-Intel-R-_Pentium-R-_Dual_CPU_T2330_@_1.60GHz-with-gentoo-2.1 Timestamp of tree: Thu, 16 Aug 2012 17:15:01 +0000 distcc 3.1 x86_64-pc-linux-gnu [enabled] app-shells/bash: 4.2_p37 dev-java/java-config: 2.1.12 dev-lang/python: 2.6.8, 2.7.3-r2, 3.1.5, 3.2.3-r1 dev-util/cmake: 2.8.8-r3 dev-util/pkgconfig: 0.27 sys-apps/baselayout: 2.1-r1 sys-apps/openrc: 0.10.5 sys-apps/sandbox: 2.6 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.9.6-r3, 1.11.6, 1.12.3 sys-devel/binutils: 2.22.90 sys-devel/gcc: 4.7.1 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r3 sys-kernel/linux-headers: 3.5 (virtual/os-headers) sys-libs/glibc: 2.15-r2 Repositories: gentoo gentoo-cvs betagarden gamerlay-stable games scarabeus science x11 sunrise mgorny Installed sets: @dep_librarian, @dep_stconnlist ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=core2 -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /lib64/systemd/system /usr/share/gnupg/qualified.txt /usr/share/openvpn/easy-rsa" 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=core2 -O2 -pipe" DISTDIR="/usr/local/portage/distfiles" EMERGE_DEFAULT_OPTS="--ask --keep-going --quiet-build=n" FCFLAGS="-march=core2 -O2 -pipe" FEATURES="assume-digests binpkg-logs collision-protect config-protect-if-modified distcc distlocks ebuild-locks fixlafiles multilib-strict news parallel-fetch parse-eapi-ebuild-head preserve-libs protect-owned 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via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="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" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" 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 ubx" INPUT_DEVICES="evdev synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" PHP_TARGETS="php5-3" PYTHON_TARGETS="python2_6 python2_7 python3_1 python3_2" RUBY_TARGETS="ruby18 ruby19" SANE_BACKENDS="artec_eplus48u net" USERLAND="GNU" VIDEO_CARDS="fbdev radeon r300 r600 vesa" 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="2.6 2.7 3.2" Unset: CPPFLAGS, CTARGET, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS ================================================================= Package Settings ================================================================= dev-lang/icc-12.1.9.293 was built with the following: USE="(multilib) (-eclipse)" sys-devel/gcc-4.7.1 was built with the following: USE="cxx fortran gcj graphite mudflap (multilib) nptl openmp (-altivec) -bootstrap -build -doc (-fixed-point) -go -gtk (-hardened) (-libssp) -multislot -nls -nocxx -nopie -nossp -objc -objc++ -objc-gc -test -vanilla" CFLAGS="-march=core2 -O2 -pipe -O2" CXXFLAGS="-march=core2 -O2 -pipe -O2"
please try to use limits from icc package.
We need to to have something like "intel-config" which makes the detection of library path and header path easier.
Could you please attach an example?
I have an idea for a solution, but I need some test code.
I'm afraid I can't reproduce this. AFAICS the new icc version has __int128 here.