Ames, Andreas (Andreas) wrote:
-----Original Message----- From: boost-bounces@lists.boost.org [mailto:boost-bounces@lists.boost.org] On Behalf Of David Abrahams Sent: Sunday, August 05, 2007 6:13 PM Subject: Re: [boost] Release Tools Analysis Part I: Build systems
Well, with a great deal of due respect to Steven, he's wrong. Sure it /can/ be done in pure python, but /should/ it be? Before we had insane C++ template metaprograms, the cost of preprocessing and lexing typically swamped that of any other C/C++ compilation phase, just because they had to deal with more data (individual characters). And now we have insane preprocessor metaprograms, so things have not gotten any easier on the C/C++ preprocessor.
I don't think, the maintainers position does matter here. Scons has an interface (a so called 'scanner' interface) to add tools of your choice for generating the implicit dependenies.
That's not quite correct. That interface you are talking about isn't quite enough to let you plug in external scanners, since a real preprocessor such as boost.wave would need to interact with other tools to fetch preprocessor flags such as include search paths, predefined macros, and the like, without which it would fall over rather quickly. FWIW, Stefan -- ...ich hab' noch einen Koffer in Berlin...