Re: Preprocessor functionality equivalent ideas needed

[Martin Krischik <krischik@users.sourceforge.net>]

Greg Milford wrote:

> Hello
> 
> I checked the FAQ for this group and did not get an answer to this.  I
> know Ada does not have a preprocessor, so how should I go about
> maintaining changes to a common code base that needs to be built under two
> different configurations?
> 
> Am I left with using Global variables or has a better method been used?  I
> am new to Ada so be kind :)

Some compilers do provide a preprocessor. GNAT for expample. Differenz to C
ist that GNAT writes the file to the disk. Well an extra file to take up
space but very handy when it comes to debugging.

Also, you can distribute the preprocessed file to those ada users without.

If you don't use GNAT you might want to take a look at AdaCL which comes
with a Text search an replace Library powerfull enough to convert normal
booch components into booch components for indefinite elements.

Last not least: Most c compiler can be told to just do the preprocessing and
then output there results into a file.

With Regards

Martin

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