MS C++ issue

I had VS6 installed on my computer,then I installed qt using qt installer package ,and installed mingw too.now I'm trying to compile a plugin and when I enter make command to start compiling,it doesn't use mingw ,it uses MS Visual C++ 6 ! and it fails to compile,some bunch of errors:

Code:

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g:/Program Files/Microsoft Visual Studio/VC98/include/istream:34:   instantiated
 from `std::basic_istream<_E, _Tr>::sentry::sentry(std::basic_istream<_E, _Tr>&,
 bool) [with _E = wchar_t, _Tr = std::char_traits<wchar_t>]'
g:/Program Files/Microsoft Visual Studio/VC98/include/istream:564:   instantiate
d from here

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I don't want qt to use MS C++,I totally want it to use mingw,how can I do that?

Use Visual Studios Express 2008. VC6 is no longer supported since it is 10 years old.

Well, I would be interested in a solution for this one, too. Not because I still use VS6 (which is waaay beyond it's "dead"line ;)), but because I want to know how Qt determines what build environment to use if there are more than one available, which seems to be the case here.

Quote:

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Originally Posted by rexi

but because I want to know how Qt determines what build environment to use if there are more than one available, which seems to be the case here.

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This is detected by the configure script when you build Qt. See "configure -help" for instructions.

Ok, thank you.