g++ vs. g++33: conflicts with qt 3.1.2 on FreeBSD 4.8

[Rob Lahaye]

Hi,

FreeBSD 4.8 and Qt 3.1.2 compiled as is from the portscollection.
I have a brief Qt code:
#include qglobal.h
#include qstring.h
int main ()
{
 QString s(mangle_failure);
 return 0;
}
I compile this as follows:

${CC} MyQtCode.C -g -O -pthread -I/usr/X11R6/include -L/usr/X11R6/lib 
-I/usr/local/include -L/usr/local/lib \
  -lSM -lICE -lc -lm -lX11 -lqt-mt
Where CC is either /usr/bin/g++ or /usr/local/bin/g++33
With g++ this compiles fine.
But with g++33, I get an error, that says:
/var/tmp//ccI2rls3.o: In function `main':
/home/lahaye/MyQtCode.C:6: undefined reference to `QString::QString[in-charge](char 
const*)'
/var/tmp//ccI2rls3.o: In function `main':
/usr/X11R6/include/qstring.h:770: undefined reference to `QString::shared_null'
/usr/X11R6/include/qstring.h:771: undefined reference to `QStringData::deleteSelf()'
collect2: ld returned 1 exit status
Any idea how I can fix this?

Thanks,
Rob.
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Re: g++ vs. g++33: conflicts with qt 3.1.2 on FreeBSD 4.8

[Simon Barner]

Hi,

 FreeBSD 4.8 and Qt 3.1.2 compiled as is from the portscollection.
 I have a brief Qt code:

[...]

 Where CC is either /usr/bin/g++ or /usr/local/bin/g++33
 With g++ this compiles fine.
 
 But with g++33, I get an error, that says:

[...]

This is due to the ABI changes that were introduced with gcc 3. Unless
you recompile Qt with g++33 (and probably its dependencies), I do not
know of any solution to fix your link error.

If you really want to use g++33, you might consider upgrading to FreeBSD
5, which comes with that version of gcc as the system compiler.

Regards,
 Simon


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