Re: [ros-dev] cmake rant

After some checks, it seems that a single header file change takes around 1m to do a quick
rebuild. If cmake files are touched, CMake does recheck and it takes around 3-3.5m. The
full build  takes around 5m. Please mind that these values are affected by CCache.

On Sat, 23 Jul 2011 18:38 -0500, "Conan Kudo (ニール・ゴンパ)"
<ngompa13(a)gmail.com> wrote:
>   Does this mean that we can purge rbuild and update the
> wiki docs to have
>  information on how to build ReactOS from source using CMake? Or are there
>  any other showstopping issues that would prevent this?
>  
>  On Sat, Jul 23, 2011 at 6:33 PM, Amine Khaldi
>  <amine.khaldi(a)reactos.org>wrote;wrote:
>  
> >   Hi,
> >
> >  Being one of the "CMake people", I'm obviously biased toward the adoption
> >  ;)
> >
> >  Seriously, it's the logical/rational thing to do.
> >
> >  That said, I just committed a temporary revert so that backtraces are
> >  reliable again and CMake adoption can really be possible now.
> >
> >  I also want to make sure everyone understands one thing: CMake is awesome
> >  for us. CMake allows us to have our build system maintained by 3rd party. It
> >  allows us to have simple, readable build system macros/functions which means
> >  anyone can hack them. It allows us to support several ways to compile ros
> >  (CMake generators), from using xcode to eclipse to VS to nmake and
> >  (mingw/unix) make files. It allows us to have the MSVC builds we always have
> >  been wanting.
> >
> >  There is one tiny catch though: because of the excellent dependency
> >  tracking, CMake build can be significantly slower compared to rbuild build.
> >  You won't notice this if you check dependencies yourself and use make
> >  module/fast, but if you compile full bootcd for example you'll notice that
> >  it takes a moment to do dependency checking. This very slowness is nothing
> >  compared to rbuild looping around itself n times though ;)
> >
> >  As I'm sure you realize, it's not just about speed. The features we gain
> >  are well worth it.
> >
> >  As final note: rest assured that we will do our best to make the CMake
> >  build as fast as possible.
> >
> >  Regards,
> >  Amine.
> >
> >
> >  ______________________________**_________________
> >  Ros-dev mailing list
> >  Ros-dev(a)reactos.org
> >
> > http://www.reactos.org/**mailman/listinfo/ros-dev<http://www.reactos.org…
> >  
>  
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With best regards
Caemyr