Mine

!!! ERROR: x11-libs/qt-3.3.6-r4 failed.
Call stack:
  ebuild.sh, line 1614:   Called dyn_compile
  ebuild.sh, line 971:   Called qa_call 'src_compile'
  environment, line 3377:   Called src_compile
  qt-3.3.6-r4.ebuild, line 199:   Called die

!!! (no error message)
!!! 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-libs/qt-3.3.6-r4/temp/build.log'.