Re: [Boost-build] [bbv2] how to preprocess all source files in a single step

From: Chris Hoeppler (hoeppler_at_[hidden])
Date: 2006-02-02 03:58:06

Hi Volodya,

> > Assume, I have some source files a.src and b.src. Invoking a converter with
> > all of the source files as input (i.e. "my_converter --flags
> > -doutput_directory a.src b.src") generates header and C-files a.h, a.c, b.h
> > and b.c in output_directory. From these an exe is built.

<snip>

> Is there any reason why running your tool once for each .src file is not 
> feasible.

Yes, there is. The tool I have to use needs to be passed all of the 
relevant .src files in one go to be able to resolve cross-references w/in 
the .src files.
 
> If that's not feasible, you can create your own target type, say 
> "MY_CONVERTED_CPP", derived from CPP. Then you can define a custom generator 
> for your type, and:
> 
>    - mark the generator as 'composing'
>    - make the generator produce a pair of target for each source

What's the pair? The h- and c-Files?

> Then, Jamfile will look like:
> 
> lib mylib : src.cpp ;
> exe myprog : my_processed mylib ;
> my_converted_cpp my_processes : a.src b.src ;

That looks good. I'll try to implement what you've sketched above.

Chris