http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60566
--- Comment #9 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Running nm on all my libs shows:
...
kde4/notepadpart.so
U _ZThn16_N6KParts13ReadWritePartD0Ev
...
kde4/okularpart.so
U _ZThn16_N6KParts13ReadWritePartD0Ev
...
libkatepartinterfaces.so
U _ZThn16_N6KParts13ReadWritePartD0Ev
libkatepartinterfaces.so.4
U _ZThn16_N6KParts13ReadWritePartD0Ev
libkatepartinterfaces.so.4.12.3
U _ZThn16_N6KParts13ReadWritePartD0Ev
...
libktexteditor.so
U _ZThn16_N6KParts13ReadWritePartD0Ev
libktexteditor.so.4
U _ZThn16_N6KParts13ReadWritePartD0Ev
libktexteditor.so.4.12.3
U _ZThn16_N6KParts13ReadWritePartD0Ev
So maybe okular and katepart just need to be recompiled?
Let me try this.