STDOUT redirection

[bennyboos]

Is there are way to redefine the default STDOUT to use my own choice of comms? As far as I can tell the compiler associates STDOUT with the last #use statement. Whilst I realise the ease of using #use RS232 functionality I am wondering if I can avoid it as I am trying to use generic code (for compatability with HiTech compilers) wherever possible, i.e. not use #use RS232.
I had hoped it was as as simple as just defining my own putc() and getc() routines which the compiler would then use for printf etc? However, when I try doing this (& deliberately miss out the #use RS232) the compiler gives errors, suggesting I might need a #use RS232 statement.
I realise there is another method & that is to use printf(fname, cstring ...) where I define my own fname, but again, this is rather non-standard.
What I had hoped for was just a means to redirect/define STDOUT to suit my own needs so that printf would default to that?
Any ideas ?

[FvM]

As far as I see, there's no other way than using the CCS proprietary printf() syntax. STDOUT respectively putchar() is a special compiler built-in stream/function, that can't be redefined.

To achieve compatibility with other compilers, preprocessor macros are required.

[PCM programmer]

You could put #pragma in front of the #use rs232() statement. Then
only CCS would use it. Other compilers would presumably ignore it.