Problems:
./configure: line 1811: GNOME_COMMON_INIT: command not found
./configure: line 3787: GNOME_DEBUG_CHECK: command not found
Here is the full emerge output:
>>> Compiling source in /var/tmp/portage/zenity-2.16.0/work/zenity-2.16.0 ...
QA Notice: USE Flag 'doc' not in IUSE for gnome-extra/zenity-2.16.0
./configure --prefix=/usr --host=i686-pc-linux-gnu --mandir=/usr/share/man
--infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc
--localstatedir=/var/lib --disable-scrollkeeper --disable-libnotify
--disable-gtk-doc --build=i686-pc-linux-gnu
checking for a BSD-compatible install... /bin/install -c
checking whether build environment is sane... yes
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
./configure: line 1811: GNOME_COMMON_INIT: command not found
checking for i686-pc-linux-gnu-pkg-config... no
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for GDU_MODULE_VERSION_CHECK... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking for intltool >= 0.35.0... 0.35.0 found
checking for perl... /usr/bin/perl
checking for XML::Parser... ok
checking for iconv... /usr/bin/iconv
checking for msgfmt... /usr/bin/msgfmt
checking for msgmerge... /usr/bin/msgmerge
checking for xgettext... /usr/bin/xgettext
checking for i686-pc-linux-gnu-gcc... i686-pc-linux-gnu-gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether i686-pc-linux-gnu-gcc accepts -g... yes
checking for i686-pc-linux-gnu-gcc option to accept ANSI C... none needed
checking for style of include used by make... GNU
checking dependency style of i686-pc-linux-gnu-gcc... gcc3
checking for ZENITY... yes
checking for perl... /usr/bin/perl
./configure: line 3787: GNOME_DEBUG_CHECK: command not found
./configure: line 3788: syntax error near unexpected token `maximum'
./configure: line 3788: `GNOME_COMPILE_WARNINGS(maximum)'
!!! Please attach the following file when filing a report to bugs.gentoo.org:
!!! /var/tmp/portage/zenity-2.16.0/work/zenity-2.16.0/config.log
!!! ERROR: gnome-extra/zenity-2.16.0 failed.
Call stack:
ebuild.sh, line 1539: Called dyn_compile
ebuild.sh, line 939: Called src_compile
ebuild.sh, line 1248: Called gnome2_src_compile
gnome2.eclass, line 63: Called gnome2_src_configure
gnome2.eclass, line 59: Called econf '--disable-scrollkeeper'
'--disable-libnotify' '--disable-gtk-doc'
ebuild.sh, line 541: Called die
