[CMake] make -j and cmake

[Samuel Crow]

Hello Jim Chaney,

What version of CMake are you using?  I'm using 2.6.2-RC4 here.  I often use make -j7 on my company's 8 core Mac Pro.  (Leaving the remaining core to manage interprocess communications, run make, manage disk caches, etc.)  Using that configuration I can build ParaView in only 7-10 minutes.  Occasionally it bombs out but if I repeat the make it picks up where it left off and finishes the build.


--- On Wed, 9/17/08, Jim Chaney <Jim.Chaney at geomerics.com> wrote:

> From: Jim Chaney <Jim.Chaney at geomerics.com>
> Subject: Re: [CMake] make -j and cmake
> To: cmake at cmake.org
> Date: Wednesday, September 17, 2008, 1:47 PM
> In case my first post to the list went missing, re-posting.
> 
> (If my post did reach the list, help! :)
> 
> Jim
> 
> 
> From: cmake-bounces at cmake.org
> [mailto:cmake-bounces at cmake.org] On Behalf Of Jim Chaney
> Sent: 12 September 2008 10:54
> To: cmake at cmake.org
> Subject: [CMake] make -j and cmake
> 
> I have been attempting to switch CMAKE from building using
> nmake (via a customised Microsoft Visual Studio 8 generator)
> to a cygwin make (using Unix Makefiles generator) in order
> to use the -j option.  A previous post
> (http://www.cmake.org/pipermail/cmake/2008-April/021338.html)
> noted that Bill Hoffman had made a special version of make
> that fixed/reverted some path/drive letter change in the
> main CVS branch.
> 
> Although the version of make available on the cmake website
> seems to work OK from the command line, when I then run it
> under Incredibuild (to move from parallel to distributed
> builds) I get a crash inside make.exe.  I have spoken to
> Xoreax (the makers of Incredibuild) and they are interested
> but unable to assist, as the problem is inside make and not
> their product.  The logical step then was to make my own
> debug version of make from the source, but I cannot get the
> same behaviour from a locally compiled make (using latest
> CVS as downloaded from Savannah) as I do with the version
> from the cmake website.
> 
> So to the questions:
> 
> 1)            What modifications were made to
> the CVS of make?  Is there a certain date I should sync
> to?  (I notice that it says the -j option only takes effect
> for that call to make, and subsequent calls have to have -j
> added to them; I dont think the cmake generated makefile
> will do this for me, will it?)
> 
> 2)            When I get 'valid' source,
> what parameters were used in the config.h?  Most
> importantly, was HAVE_CYGWIN_MAKE or HAVE_MKS_MAKE defined?
> 
> 
> Apologies of this seems tangential, but unless I am
> misunderstanding the CVS repository make hasn't been
> released for 2+ years so the change from Bill has never been
> released...
> 
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