There is a macro assert_cc(expr) defined in macro.h which makes the compiler fail if the macro is used in two different header files (src/libsystemd/sd-bus/bus-util.h and src/resolve/dns-type.h) on the same line. The bug is fixed upstream in commit 6825a04de61f0bceab0ccddb34d825c3951caef1. Reproducible: Always
Created attachment 400970 [details] gcc -E _assert_struct_118 appears twice as two different structures which makes compiler fail.
What compiler are you using? What ARCH? emerge --info would be good to have here.
Also a build log.
Portage 2.2.14 (python 2.7.7-final-0, default/linux/x86/13.0, gcc-4.8.3, glibc-2.15-r3, 3.18.7-gentoo i686) ================================================================= System uname: Linux-3.18.7-gentoo-i686-Intel-R-_Core-TM-2_Duo_CPU_E8200_@_2.66GHz-with-gentoo-2.2 KiB Mem: 6116836 total, 3146328 free KiB Swap: 8388604 total, 7891544 free Timestamp of tree: Fri, 10 Apr 2015 14:15:01 +0000 ld GNU ld (Gentoo 2.24 p1.4) 2.24 ccache version 3.1.9 [disabled] app-shells/bash: 4.2_p37 dev-lang/perl: 5.12.4-r1 dev-lang/python: 2.7.7 dev-util/ccache: 3.1.9 dev-util/cmake: 2.8.9 dev-util/pkgconfig: 0.28-r1 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.13.11 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.9.6-r3, 1.10.2, 1.11.6, 1.13.4 sys-devel/binutils: 2.24-r3 sys-devel/gcc: 4.6.3, 4.8.3 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.18 (virtual/os-headers) sys-libs/glibc: 2.15-r3 Repositories: gentoo Stl-Gentoo-Ports ACCEPT_KEYWORDS="x86" ACCEPT_LICENSE="* -@EULA" CBUILD="i686-pc-linux-gnu" CFLAGS="-Wa,--32 -march=prescott -O2 -pipe -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /usr/share/openvpn/easy-rsa /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.5/ext-active/ /etc/php/cgi-php5.5/ext-active/ /etc/php/cli-php5.5/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="-Wa,--32 -march=prescott -O2 -pipe -fomit-frame-pointer" DISTDIR="/var/portage/distfiles" FCFLAGS="-O2 -march=i686 -pipe" FEATURES="assume-digests binpkg-logs buildpkg config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -march=i686 -pipe" GENTOO_MIRRORS="http://gentoo.po.opole.pl" LANG="pl_PL.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j5" PKGDIR="/var/portage/packages/x86" 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" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/var/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi adns alsa amr animgif ao audiofile avahi berkdb bluetooth bzip2 cairo caps chroot cli consolekit cracklib crypt cscope curl cvs cxx dbus dirac djvu dri eds emacs encode equalizer exif expat faac faad fam fftw firefox flac fontconfig fortran fuse gdbm gif glib glitz gmp gnutls gpgme gpm gps gs gsl gsm gtk gzip-el hal iconv icu id3tag idn imlib ipod ipv6 irda jabber jpeg jpeg2k kerberos ladspa laptop lcms ldap libav libnotify libsamplerate lm_sensors lua lzma lzo mad mbox mikmod minimal mmap mmx mmxext mng modules mp3 mpd mpeg musepack ncurses network nls nptl objc offensive ogg opengl openmp pam pcre pdf perl png policykit ppds pth python quicktime rdesktop readline rss ruby sasl schroedinger sdl session sha512 sndfile socks5 soundtouch speex spell sqlite sqlite3 sse sse2 sse3 ssl ssse3 startup-notification subversion svg syslog systemd tcl tcpd theora threads tiff tk truetype udev unicode usb v4l v4l2 vim-syntax vorbis wavpack webdav wifi win32codecs x86 xattr xcb xft xinerama xml xpm xulrunner xv xvid zeroconf zlib" ABI_X86="32" ALSA_CARDS="hda-intel usb-audio" 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" 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="evdev synaptics keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="pl en" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7" USERLAND="GNU" VIDEO_CARDS="intel i915 vga fbdev v4l vesa dummy" 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, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Created attachment 400972 [details] build.log
this should be fixed in recent releases
