Bugzilla Bug 65706

checking for bindtextdomain... yes
checking for xgettext... /usr/bin/xgettext
checking for msgmerge... /usr/bin/msgmerge
checking for msgfmt... /usr/bin/msgfmt
checking for XInternAtoms in -lX11... yes
checking for IceConnectionNumber in -lICE... (cached) yes
checking for XShapeCombineRectangles in -lXext... yes
checking for xft-config... /usr/X11R6/bin/xft-config

checking for imlib-config... /usr/bin/imlib-config
checking for mkfontdir... /usr/X11R6/bin/mkfontdir
checking for gnome-config... /usr/bin/gnome-config
checking for pkg-config... no
configure: error: gnome 2 can not be found via pkg-config.
*** Install the GNOME

checking for bindtextdomain... yes
checking for xgettext... /usr/bin/xgettext
checking for msgmerge... /usr/bin/msgmerge
checking for msgfmt... /usr/bin/msgfmt
checking for XInternAtoms in -lX11... yes
checking for IceConnectionNumber in -lICE... (cached) yes
checking for XShapeCombineRectangles in -lXext... yes
checking for xft-config... /usr/X11R6/bin/xft-config

checking for imlib-config... /usr/bin/imlib-config
checking for mkfontdir... /usr/X11R6/bin/mkfontdir
checking for gnome-config... /usr/bin/gnome-config
checking for pkg-config... no
configure: error: gnome 2 can not be found via pkg-config.
*** Install the GNOME´s development packages.

!!! ERROR: x11-wm/icewm-1.2.16-r1 failed.
!!! Function econf, Line 362, Exitcode 1
!!! econf failed

icewm continued the configure once I'd emerged dev-util/pkgconfig-0.15.0

bash-2.05b$ emerge info
Portage 2.0.50-r11 (default-x86-2004.2, gcc-3.3.4, glibc-2.3.3.20040420-r1, 2.6.7-gentoo-r14)
=================================================================
System uname: 2.6.7-gentoo-r14 i686 AMD Athlon(TM) XP 1700+
Gentoo Base System version 1.4.16
Autoconf: sys-devel/autoconf-2.59-r4
Automake: sys-devel/automake-1.8.5-r1
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CFLAGS="-march=pentium3 -O2 -pipe -mmmx -msse -mfpmath=sse"
CHOST="i686-pc-linux-gnu"
COMPILER=""
CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3/share/config /usr/lib/mozilla/defaults/pref /usr/share/config /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-march=pentium3 -O2 -pipe -mmmx -msse -mfpmath=sse"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs buildpkg ccache sandbox"
GENTOO_MIRRORS="http://mirror.datapipe.net/gentoo http://mirror.averse.net/pub/gentoo/"
MAKEOPTS="-j2"
PKGDIR="/mnt/tmp/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="X acpi acpi4linux apache2 apm arts artswrappersuid audiofile avi berkdb bitmap-fonts bzlib cdparanoia cdr cpdflib crypt cups curl dga dnd dv dvd dvdr edl encode esd exif faad fam fftw flac flash fltk foomaticdb ftp gdbm gif gimp gimpprint gkrellm gnome gpm gstreamer gtk gtk2 gtkhtml i8x0 imagemagick imap imlib imlib2 java javascript jbig jpeg kde lcms libcaca libg++ libwww linguas_hi lzo mad mailbox maildir mbox mmx mng motif mozilla mozsvg mpeg mpi mysql ncurses nethack network nis nls nptl ntlm oav oggvorbis openal opengl oss pam pcre pdf pdflib perl pic png ppds python qt quicktime readline recode rtc samba sdl slang slp speex spell sse ssl svga tcpd tga theora tiff truetype unicode usb video_cards_i810 vim-with-x wmf x86 xml xml2 xmms xpm xprint xv xvid zlib"

dep added, thanks for reporting