Qt debug with release

I am trying to debug a program I made with Qt 4.7.3 in Rele开发者_开发知识库ase mode. I would like to debug into this program. Is there a way to build the Qt DLL libraries in release with debug info?

I'm on Windows using Visual Studios 2008.

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To generate debug symbols for your release build of Qt on windows...

1. Add the flag "-Zi" to QMAKE_CFLAGS_RELEASE in your qmake.conf.
2. Add the flag "/DEBUG" to QMAKE_LFLAGS_RELEASE in your qmake.conf (you'll probably also want "/OPT:REF" and "/OPT:icf")

For a VC2008 build you would add this to Qt\mkspecs\win32-msvc2008\qmake.conf Then configure and rebuild.

More details of the various qmake options available here: http://doc.qt.io/qt-5/qmake-variable-reference.html