[Qt-interest] building Qt 4.5.0 (LGPL) with DB2 and ODBC plugin support

[Thiago Macieira]

Robert Hairgrove wrote:
>Does this mean that LGPL'ed Qt cannot reliably use a DB2 plugin which
>was built with the DB2 Express version? And, do the commercial DB2
>libraries not have this dependency on libstdc++5.so any more?

The problem is not Qt, but your C++ compiler. GCC versions 3.4 and above 
use libstdc++.so.6, which matches the ABI version 2.

GCC 3.2 and 3.3 use ABI version 1, with libstdc++.so.5. Unfortunately, 
these two versions of GCC are no longer supported.

You may try to build Qt with -fabi-version=1, but you may want to turn off 
STL support since it's unlikely that it's going to work. I have never 
tried the -fabi-version=N switch and cannot guarantee it will work.

It is recommended that you contact IBM and request a version of DB2 
compiled with a GCC version released in the past 4 years (3.4.0 was 
released almost 5 years ago, to the date, the last update to 3.3 was 3 
years and 11 months ago).
-- 
Thiago Macieira - thiago.macieira (AT) nokia.com
  Senior Product Manager - Nokia, Qt Software
      Sandakerveien 116, NO-0402 Oslo, Norway
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