[boost] preprocessed mpl code was Re: [mpl?] loki -> boost

From: Sam Partington (Sam.Partington_at_[hidden])
Date: 2004-02-26 06:10:35

On Fri, 20 Feb 2004 16:09:56 -0500, David Abrahams 
<dave_at_[hidden]> wrote:
> There are pre-generated headers in boost/mpl/aux_/preprocessed/...
> Those are the ones that actually get used.

What generates these files?  We use the preprocessor library for boiler 
plate code here and there and find it very useful.

But one of the critisms voiced is that debugging the generated code is 
difficult->impossible (all debug info points at the same line in the 
code!).  What we really want is a way of preprocessing the code as a 
separate stage in the build process.

We could (and occasionally do) output the preprocessed files, but that 
means all of the headers are pulled in, and all of the comments stripped 
out.

I imagine this is not an uncommon case.

TIA

Sam