How do I build a debug mode QT app that links to a lib built in release mode?

[spirit]

you can built Qt with -debug-and-release configure key, that allows to use Qt in debug and release modes by adding CONFIG += release/debug flag in pro-file of your application.
so, you need:

configure.exe -debug-and-release
mingw32-make (or nmake for MS VC)

[Joachie]

you can built Qt with -debug-and-release configure key, that allows to use Qt in debug and release modes by adding CONFIG += release/debug flag in pro-file of your application.
so, you need:

configure.exe -debug-and-release
mingw32-make (or nmake for MS VC)

configure.exe -debug-and-release
mingw32-make (or nmake for MS VC)

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Thanks, I'll give that a try. Is there a way to do a clean before re-making or re-configing?

[spirit]

yup

mingw32-make clean (or for MS VS: nmake clean)

but you should run this command in QTDIR.

[Joachie]

yup

but you should run this command in QTDIR.

Thanks, QTDIR meaning c:\qt\2009.1\qt in my case?

or the root, being c:\qt\2009.1 ?

[spirit]

QTDIR meaning c:\qt\2009.1\qt in my case?

yes, c:\qt\2009.1\qt.

[Joachie]

you can built Qt with -debug-and-release configure key, that allows to use Qt in debug and release modes by adding CONFIG += release/debug flag in pro-file of your application.
so, you need:

Ok, I rebuilt as you suggested. So should all the libs now be using the non debug version of MSVCRT? Because the debug QT libs still appear to be using the debug version of MSVCRT.

[spirit]

how do you know? did you use Dependency walker? use it on Qt libs which ending without "d".