compilation issues: multiple includes?

[nateriver]

In particular, I have a header file "m.h" like the following:

...
namespace MYNAMESPACE {
    class M : public QObject
    {
    Q_OBJECT
    ....
    #closing bracket?
}
#endif

...
namespace MYNAMESPACE {
    class M : public QObject
    {
    Q_OBJECT
    ....
    #closing bracket?
}
#endif

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Did you miss closing bracket ('}') in the marked position? Or just missed it when posting?
From my experience with C++, such strange errors usually happen when there is a syntax error somewhere, for example missing bracket, semi-colon or smt like that.

Makefile:[line number]: warning: ignoring old commands for target 'moc_m.cpp'
Makefile:[line number]: warning: ignoring old commands for target 'm.o'

But most likely it seems that moc (qt's meta-object compiler) doesn't run when building for some reason, so C++ compiler tries to compile Qt-specific stuff and fails.

P.S. If data.h includes QtGlobal and QString there is no need to include them in m.h.