Re: [OT] automatically write enabled macros of the makefile into a file

[Kamaraju Kusumanchi <kamaraju@bluebottle.com>]

On Wednesday 30 August 2006 12:19, T wrote:
> On Wed, 30 Aug 2006 18:14:33 -0400, Kamaraju Kusumanchi wrote:
> > The code comes with a makefile. The code contains many
> >
> > #ifdef
> > #endif
> >
> > constructs which are preprocessed by cpp (The C preprocessor). ...
> >
> > #ifdef construct1
> >   write(10,*) 'construct1 is enabled'
> > #else
> >   write(10,*) 'construct1 is disabled'
> > #endif
> >
> > But this is very time consuming to do for all of the macros. Now it would
> > be much easier, if, before preprocessing the code, there is a way to
> > automatically write a file which tells which macros were enabled and
> > which macros were disabled.
>
> Instead of writing them at each individual places, why don't you write
> just one output line at a central place. Say right at the beging of
> program excution, you put:
>
>  write(10,*) 'Compiled with construct1=${construct1}
> construct1=${construct2}...'
>
> The ${construct1} & ${construct2} should be populated by make, before cpp
> see them...
>

This is definitely a good idea. But I dont know how to do it. Any pointers?

raju

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