[Development] Use static qt libraries

[Rohan McGovern]

Liu Song.7 (Nokia-MP/Beijing) said:
> Thanks, are such undefined symbols normal ? And is there a way to fix it ?

Right now, the only thing which comes to mind is if you have somehow
mixed some -frtti and -fno-rtti objects.

> 
> -----Original Message-----
> From: Mcgovern Rohan (Nokia-MP/Brisbane) 
> Sent: Tuesday, July 24, 2012 11:58 AM
> To: Liu Song.7 (Nokia-MP/Beijing)
> Cc: Lan Peng-Peter (Nokia-MP/Beijing); Storm-Olsen Marius (Nokia-MP/Austin); development; thiago.macieira
> Subject: Re: [Development] Use static qt libraries
> Importance: High
> 
> song.7.liu at nokia.com said:
> > Hi,
> > 
> > Now we can build out the single libqt5.so (using ARM toolchain) by:
> >     
> >     "OPTS += -static"  to create the static qt libs
> >     "ar -x libQtXX.a" to extract the .o files
> >     "armlink --fpic --shared *.o -o libqt5.so" to generate final single so
> > 
> > But the "readelf -s libqt5.so | grep UND":
> > 
> >      4: 00000000     0 OBJECT  WEAK   DEFAULT  UND _ZTI12QFocusHelper
> >      5: 00000000     0 OBJECT  WEAK   DEFAULT  UND _ZTI17QAbstractUndoItem
> >      6: 00000000     0 OBJECT  WEAK   DEFAULT  UND _ZTI19QStaticTextUserData
> >      7: 00000000     0 OBJECT  WEAK   DEFAULT  UND _ZTI22QItemEditorCreatorB
> >      8: 00000000     0 OBJECT  WEAK   DEFAULT  UND _ZTI26QAbstractDynamicMet
> >      9: 00000000     0 OBJECT  WEAK   DEFAULT  UND _ZTI28QNetworkConfigurati
> > 
> > Does anyone know what is this mangled symbol "_ZTIXX" in C++ ?
> > 
> 
> The 'c++filt' program can answer this.
> 
>   $ echo _ZTI12QFocusHelper | c++filt
>   typeinfo for QFocusHelper