Don't forget to run ./configure
    If you haven't done so in a while, run ./configure --help
 * You asked to enable hidden visibility, but your kdelibs was
 * built without its support. Please rebuild kdelibs with the
 * kdehiddenvisibility useflag enabled.

!!! ERROR: kde-base/klaptopdaemon-3.5.5 failed.
Call stack:
  ebuild.sh, line 1615:   Called dyn_compile
  ebuild.sh, line 972:   Called qa_call 'src_compile'
  ebuild.sh, line 44:   Called src_compile
  ebuild.sh, line 1305:   Called kde-meta_src_compile
  kde-meta.eclass, line 380:   Called kde_src_compile
  kde.eclass, line 170:   Called kde_src_compile 'all'
  kde.eclass, line 340:   Called kde_src_compile 'myconf' 'configure' 'make'
  kde.eclass, line 278:   Called die

!!! kdelibs without hidden visibility
!!! 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/kde-base/klaptopdaemon-3.5.5/temp/build.log'.