Does CMake take longer than rbuild

[Marvin Zhang]

Hi guys,
I have compiled the whole project and just want to copy ntoskrnl. Here
is what I execute:
---------------------------------------------------------------------
D:\ReactOS\src\ReactOS-0.3.14-CLT2012>make ntoskrnl_install
[COPY]     Z:\ReactOS\system32\ntoskrnl.exe

Total Build Time: 00:02:04
---------------------------------------------------------------------
I don't know why it takes more than 2 minutes. Is it correct?
Thanks.

[Andrew Faulds]

Hi Marvin,

That's probably because it's looking through the directories to find
the build instructions. Not sure why it takes so long though.

Andrew

On 10 April 2012 08:27, Marvin Zhang <fanzi2009(a)gmail.com> wrote:
>   Hi guys,
>  I have compiled the whole project and just want to copy ntoskrnl. Here
>  is what I execute:
>  ---------------------------------------------------------------------
>  D:\ReactOS\src\ReactOS-0.3.14-CLT2012>make ntoskrnl_install
>  [COPY]     Z:\ReactOS\system32\ntoskrnl.exe
>
>  Total Build Time: 00:02:04
>  ---------------------------------------------------------------------
>  I don't know why it takes more than 2 minutes. Is it correct?
>  Thanks.
>
>  _______________________________________________
>  Ros-dev mailing list
>  Ros-dev(a)reactos.org
>  http://www.reactos.org/mailman/listinfo/ros-dev 


-- 
Andrew Faulds (AJF)
http://ajf.me/

[James Tabor]

Before it was 23 min now it's 33.

On 4/10/12, Marvin Zhang <fanzi2009(a)gmail.com> wrote:
>   Hi guys,
>  I have compiled the whole project and just want to copy ntoskrnl. Here
>  is what I execute:
>  ---------------------------------------------------------------------
>  D:\ReactOS\src\ReactOS-0.3.14-CLT2012>make ntoskrnl_install
>  [COPY]     Z:\ReactOS\system32\ntoskrnl.exe
>
>  Total Build Time: 00:02:04
>  ---------------------------------------------------------------------
>  I don't know why it takes more than 2 minutes. Is it correct?
>  Thanks.

[James Tabor]

On 4/10/12, James Tabor <jimtabor.rosdev(a)gmail.com> wrote:
>   Before it was 23 min now it's 33.
>  
Oh, RosBuild 23 min with ReactOS+RosApps (FULL)+RosTests and CMake now
even with RosApps cut down is now 33 mins all on the same system.

[Timo Kreuzer]

Hi,

One of the reasons why CMake is slower is that if does full dependency 
checking.
If you enabled this feature in rbuild, a clean build was extremely slow.

90% of the time I don't do full builds, but just rebuild a module.
For that you can use "make foo/fast", which will be much faster than 
ever possible with rbuild.

If you you want to get much higher build speed and have no problem with 
using an experimental system,
you can try ninja. It replaces make and is incredibly fast. You need a 
special CMake version
for that though.

Regards,
Timo

Am 11.04.2012 02:59, schrieb James Tabor:
>   On 4/10/12, James
> Tabor<jimtabor.rosdev(a)gmail.com>  wrote:
> >   Before it was 23 min now it's 33.
> >  
>  Oh, RosBuild 23 min with ReactOS+RosApps (FULL)+RosTests and CMake now
>  even with RosApps cut down is now 33 mins all on the same system.
>
>  _______________________________________________
>  Ros-dev mailing list
>  Ros-dev(a)reactos.org
>  http://www.reactos.org/mailman/listinfo/ros-dev
>

[Marvin Zhang]

I found that compiling on Linux is great faster than on Windows,
especially when it analyze the dependency at the beginning of
compiling.

On Wed, Apr 11, 2012 at 3:12 PM, Timo Kreuzer <timo.kreuzer(a)web.de> wrote:
>   Hi,
>
>  One of the reasons why CMake is slower is that if does full dependency
>  checking.
>  If you enabled this feature in rbuild, a clean build was extremely slow.
>
>  90% of the time I don't do full builds, but just rebuild a module.
>  For that you can use "make foo/fast", which will be much faster than ever
>  possible with rbuild.
>
>  If you you want to get much higher build speed and have no problem with
>  using an experimental system,
>  you can try ninja. It replaces make and is incredibly fast. You need a
>  special CMake version
>  for that though.
>
>  Regards,
>  Timo
>
>  Am 11.04.2012 02:59, schrieb James Tabor:
>
> >   On 4/10/12, James
> > Tabor<jimtabor.rosdev(a)gmail.com>  wrote:
> > >  
> > >  Before it was 23 min now it's 33.
> > >  
> >  Oh, RosBuild 23 min with ReactOS+RosApps (FULL)+RosTests and CMake now
> >  even with RosApps cut down is now 33 mins all on the same system.
> >
> >  _______________________________________________
> >  Ros-dev mailing list
> >  Ros-dev(a)reactos.org
> >  http://www.reactos.org/mailman/listinfo/ros-dev
> >  
>
>  _______________________________________________
>  Ros-dev mailing list
>  Ros-dev(a)reactos.org
>  http://www.reactos.org/mailman/listinfo/ros-dev