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.