Compiling Qt project in a directory outside of the install directory

I've been working on a project using OpenCV for a while, and am ready to upgrade my user interface from using cvWaitKey() to get key presses and emulating buttons with trackbars. Ha. So I've decided to use Qt.

I'd like to continue developing in the same directory I've been using, which is, of course, outside of the Qt install directory, C:\Qt\2010.05\qt. Using the "Qt Command Prompt", I'm able to compile the Hello开发者_如何学运维 Notepad example in directories both in and out of C:\Qt\2010.05\qt, namely C:\Qt\2010.05\qt\abc and C:\Qt\2010.05\abc.

However, while compiling under C:\ ... \qt produces executables in both the debug and release directories, compiling outside of it only produces the debug executable, along with a .o file (object code?). I did some comparisons using WinMerge, and found that the following lines (among others) differ in the two makefiles (generated using qmake -project and then qmake):

Inside qt\

first: all  
install: debug-install release-install  
uninstall: debug-uninstall release-uninstall  

Outside qt\

first: debug  
install: debug-install  
uninstall: debug-uninstall  

That's clearly the problem (the .pro files generated by qmake -project differ only in timestamp). I'm sure there's an easy answer out there to what's causing this... I hope there's an easy answer to how I can work around it. Also, I intend to use QtCreator some; hopefully the solution is the same for the IDE as the Command-Line compiler.

Thanks!

Nolan

p.s.: I don't think this is the same issue: Qmake does not support build directories below the source directory ...in any case, I'm not sure I understand the answer.

You should be able to add

CONFIG += release

to your .pro file, to build for release target. There's also

CONFIG += debug_and_release

iirc.

QtCreator has a GUI element for toggling between build targets, you might try opening the .pro with that application if you find you need to switch back and forth often.