[Qt-interest] passing in compile flags from qmake

[David Boosalis]

On one platform I have a mysql password set as "passwordA", on the other
platform I have set to "passwordB". I just comment out one line or the
other.  Both platforms share the same CVS source code, and although it is
much to vi the source and comment out the wrong password as

//QString password = "passwordA";
QString password = "passwordB";

I'd like to add it as a QMake or Make option, so I do not have to edit the
file.  What I am asking is how do I pass a #define to the compiler
I invision the source code to look something like this.

#ifdef platfromA
QString password = "passwordA";
#else
QString password = "passwordB";
#endif

How does one set such a flag in project file ?

Thanks in advance for any help
-David
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