[Qt-interest] plugin can't be loaded under Windows

[Dong Tiger]

Hi,

I ran into a strange problem. I am using Qt(qt-sdk-win-opensource-2009.01.1)
and MinGW(gcc 4.4.0). CMake is used as the build system. And I used Qt
Plugin mechanism in my program.

If I compile the code with debug enabled ( cmake -DCMAKE_BUILD_TYPE=debug),
plugins will be loaded successfully. But if not, QPluginLoader::instance
just returns NULL.

I tried to compare the cmd line of debug mode and non debug mode. The only
difference seems to be that in debug mode there is " -DQT_DEBUG" in g++
arguments and non-debug mode doesn't have that.

Any idea of that? TIA.

--
Tiger
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