!! Please attach the following file when filing a report to bugs.gentoo.org:
!!! /var/tmp/portage/x11-plugins/compiz-fusion-plugins-unsupported-9999/work/plugins-unsupported/config.log

!!! ERROR: x11-plugins/compiz-fusion-plugins-unsupported-9999 failed.
Call stack:
  ebuild.sh, line 1621:   Called dyn_compile
  ebuild.sh, line 973:   Called qa_call 'src_compile'
  ebuild.sh, line 44:   Called src_compile
  compiz-fusion-plugins-unsupported-9999.ebuild, line 47:   Called econf
  ebuild.sh, line 578:   Called die

!!! econf failed
!!! If you need support, post the topmost build error, and the call stack if relevant.
!!! A complete build log is located at '/var/tmp/portage/x11-plugins/compiz-fusion-plugins-unsupported-9999/temp/build.log'.

!!! This ebuild is from an overlay: '/usr/portage/local/layman/sabayon'