The problem is that at line 31 of my cmdLine.cpp I only have this:

 

#include <boost/variant.hpp>

 

...

> > I read the message but why can I compile even without a warning on the

> > Ubuntu machine?

> > Maybe is not a problem of my source but a problem of the combination of that

> > GCC and BOOST version on CentOS machine.

>

> Maybe it is. But do you really think anyone can *guess* what the

> problem is, without seeing even a single line of your source code?

>

>

> > Do you have any idea on how to fix  or at least investigate it, without update GCC or BOOST?

>

> I mentioned a possible direction to investigate: look at the

> preprocessed code. Perhaps, you've got a macro that messed up some

> variant or mpl code.

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