checking for CLOCK... configure: error: Package requirements (gtk+-2.0 >= 2.7.1 libgnomeui-2.0 >= 2.5.4 libecal-1.2 >= 0.0.97 libedataserverui-1.2 >= 1.2.0) were not met.
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively you may set the CLOCK_CFLAGS and CLOCK_LIBS environment variables
to avoid the need to call pkg-config.  See the pkg-config man page for
more details.

!!! Please attach the following file when filing a report to bugs.gentoo.org:
!!! /var/tmp/portage/gnome-panel-2.12.3/work/gnome-panel-2.12.3/config.log

!!! ERROR: gnome-base/gnome-panel-2.12.3 failed.
Call stack:
  ebuild.sh, line 1546:   Called dyn_compile
  ebuild.sh, line 937:   Called src_compile
  ebuild.sh, line 1255:   Called gnome2_src_compile
  gnome2.eclass, line 63:   Called gnome2_src_configure
  gnome2.eclass, line 59:   Called econf '--disable-scrollkeeper' '--enable-eds' '--disable-gtk-doc'
  ebuild.sh, line 540:   Called die

!!! econf failed
!!! If you need support, post the topmost build error, and the call stack if relevant.

ryba fausto # emerge -pv libgnomeui

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   ] gnome-base/libgnomeui-2.14.1  USE="jpeg -debug -doc" 0 kB

Total size of downloads: 0 kB
ryba fausto # emerge -pv gtk+ libgnomeui libecal libedataserverui

These are the packages that would be merged, in order:

Calculating dependencies \
emerge: there are no ebuilds to satisfy "libecal".

ryba fausto # equery b libecal
[ Searching for file(s) libecal in *... ]
ryba fausto #