[CMake] Effort to create a new generator (tup)

[Bill Hoffman]

On 4/22/2010 3:47 PM, Gustavo Sverzut Barbieri wrote:
> Hi all,
>
> My team is just starting with CMake to have our WebKit port (EFL), so
> far we like it as it is much cleaner than our previous experiences
> (most of our projects use autotools).
>
> Since webkit is a monster project (1668 objects generated), even doing
> stat() on all files takes time, so make when there is nothing to make
> takes more than we'd like. To solve this there are alternatives to
> "make" that are quite nice, giving UNIX the speed other projects that
> uses all-in-one IDE/compiler have, they do track the files that
> changed and there is no need to check, you already know what changed.
>
> One of the alternatives is tup (http://gittup.org/tup/index.html), it
> uses Linux inotify support to track what changed and is quite nice.
> All it need is a tupfile that represents a DAG, one can see examples
> in http://gittup.org/tup/examples.html   Tup also traps open() system
> calls using LD_PRELOAD and will automatically know the dependencies
> based on files it reads.
>
> As we never attempted to do any sort of CMake generator, not even
> looking the existing, I'd like to know the expected effort to write
> one for Tup from you guys. Anyone that would like to help with this
> task?
>

I think it would be a somewhat larger undertaking.   It may tax tup 
quite a bit.  However, CMake has a pretty good set of tests so you would 
know when it was working.

-Bill