checking for inflate in -lz... yes
checking for GTHREAD... yes
checking for perl5... no
checking for perl... /usr/bin/perl
checking for GOBJECT_INTROSPECTION... yes
checking for vapigen... no
configure: error: Cannot find the "vapigen" binary in your PATH

!!! Please attach the following file when seeking support:
!!! /var/tmp/portage/net-libs/gtk-vnc-0.5.1/work/gtk-vnc-0.5.1_gtk3/config.log
* ERROR: net-libs/gtk-vnc-0.5.1 failed (configure phase):
* econf failed
*
* Call stack:
* ebuild.sh, line 93: Called src_configure
* environment, line 4994: Called econf '--with-examples' '--enable-introspection' '--with-pulseaudio' '--with-sasl' '--with-coroutine=gthread' '--without-libview' '--disable-static' '--disable-vala' '--enable-introspection' '--enable-vala' 'VAPIGEN=' '--with-python=no' '--with-gtk=3.0'
* phase-helpers.sh, line 521: Called die
* The specific snippet of code:
* die "econf failed"
*
* If you need support, post the output of `emerge --info '=net-libs/gtk-vnc-0.5.1'`,
* the complete build log and the output of `emerge -pqv '=net-libs/gtk-vnc-0.5.1'`.
* The complete build log is located at '/var/tmp/portage/net-libs/gtk-vnc-0.5.1/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/net-libs/gtk-vnc-0.5.1/temp/environment'.
* Working directory: '/var/tmp/portage/net-libs/gtk-vnc-0.5.1/work/gtk-vnc-0.5.1_gtk3'
* S: '/var/tmp/portage/net-libs/gtk-vnc-0.5.1/work/gtk-vnc-0.5.1'  

configure: error: Cannot find the "vapigen" binary in your PATH  

sunboy / # emerge --info gtk-vnc
Portage 2.1.11.55 (default/linux/amd64/13.0/desktop/gnome, gcc-4.6.3, glibc-2.15-r3, 3.8.4-202.fc18.x86_64 x86_64)
=================================================================
System Settings
=================================================================
System uname: Linux-3.8.4-202.fc18.x86_64-x86_64-Intel-R-_Core-TM-_i3_CPU_M_380_@_2.53GHz-with-gentoo-2.1
KiB Mem: 3716776 total, 366176 free
KiB Swap: 5119996 total, 5041812 free
Timestamp of tree: Fri, 05 Apr 2013 00:45:01 +0000
ld ERROR: ld.so: object '/usr/lib64/freetype-infinality/libfreetype.so.6' from LD_PRELOAD cannot be preloaded: ignored.
app-shells/bash: 4.2_p37
dev-lang/python: 2.7.3-r3, 3.2.3-r2
dev-util/cmake: 2.8.9
dev-util/pkgconfig: 0.28
sys-apps/baselayout: 2.1-r1
sys-apps/openrc: 0.11.8
sys-apps/sandbox: 2.5
sys-devel/autoconf: 2.13, 2.69
sys-devel/automake: 1.10.3, 1.11.6
sys-devel/binutils: 2.22-r1
sys-devel/gcc: 4.6.3
sys-devel/gcc-config: 1.7.3
sys-devel/libtool: 2.4-r1
sys-devel/make: 3.82-r4
sys-kernel/linux-headers: 3.6 (virtual/os-headers)
sys-libs/glibc: 2.15-r3
Repositories: gentoo
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe"
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/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -pipe"
DISTDIR="/usr/portage/distfiles"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://gentoo.channelx.biz/"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY=""
SYNC="rsync://rsync.jp.gentoo.org/gentoo-portage"
USE="X a52 aac acl acpi alsa amd64 apng applet asf berkdb bindist bluetooth bonobo branding bzip2 cairo cdda cdr classic cli client colord compat consolekit cpufreq cracklib crypt css cups cxx dbus debug deprecated dri dts dvd dvdr e2fsprogs eds egl emboss encode evo examples exif fam firefox flac fortran gallium gdbm gdu geoloc gif glib gnome gnome-keyring gnome-online-accounts gpm gstreamer gtk gusb hardcoded-tables hardened http hunspell iconv introspection ipv6 jit jpeg kdrive lcms ldap libburn libffi libkms libnotify libproxy libsamplerate libsecret llvm lvm1 lzma mad minimal mmx mng modules mp3 mp4 mpeg mudflap multilib nautilus ncurses nls nptl ogg opengl openmp orc pam pango pcre pdf png policykit postscript ppds pulseaudio python qt3support quvi readline sasl sdl server session shared-glapi sna socialweb sound spell sse sse2 ssh ssl startup-notification suid svg syslog tcpd telepathy thin threads tiff truetype udev udisks unicode upower usb utils uuid vala vapigen vorbis wav weather webgl wxwidgets x264 xa xcb xml xorg xv xvid youtube 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" 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="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" 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" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-3" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" RUBY_TARGETS="ruby18 ruby19" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga nouveau nv r128 radeon savage sis tdfx trident vesa via vmware 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, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON