qt plugins and release builds

[Shane King]

Christian Ehrlicher wrote:
> Shane King schrieb:
>> Christian Ehrlicher wrote:
>>>>     if (WIN32)
>>>> 	  # qt is always compiled with QT_NO_DEBUG under mingw,
>>>> 	  # so we need to compile stuff linked against it
>>>> 	  # the same or otherwise QPluginLoader rejects plugins
>>>>        add_definitions(-DQT_NO_DEBUG)
>>>>     endif (WIN32)
>>>>
>>>> Hopefully this should solve our issues.
>>>>
>>> Please find another way to fix this!
>> Why? I explain why I think it's the correct fix (QT isn't compiled as 
>> seperate debug and release builds under mingw, just like on unix). It 
>> fixes it only for that compiler, in all circumstances. MSVC (or any 
>> other compiler) isn't affected.
>>
> You're wrong here. Qt is compiled with debug_and_release on mingw and it
> can be compiled as separate debug in windows and linux too. So your fix
> is wrong.

OK, I'm wrong on details ...

You are right that both versions of Qt are generated. However (and this 
is why I was thinking debug versions of qt weren't being compiled), even 
in debug builds it ends up linking against the release libraries (eg 
qtcore4.dll rather than qtcored4.dll). I verified this with depends.exe 
from the PSDK.

For MSVC the debug/release dll is chosen correctly.

We need to fix the dll choosing problem before we can fix the 
QT_NO_DEBUG problem.

Shane.