[CMake] Parallel builds and Eclipse CDT4 generator

[Michael Jackson]

I think that is a CDT 5.x thing, I think. I have it on my CDT 5.x  
installation but didn't remember having it on CDT 4. If there is a way  
to set that "checkbox" during the CDT project file generation then CDT  
will figure out how many compile threads to use.
  Here is a screen shot from my installation:
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_________________________________________________________
Mike Jackson                  mike.jackson at bluequartz.net
BlueQuartz Software                    www.bluequartz.net
Principal Software Engineer                  Dayton, Ohio



On Mar 12, 2009, at 5:56 PM, Alexander Neundorf wrote:

> On Thursday 12 March 2009, Bill Hoffman wrote:
>> Alexander Neundorf wrote:
>>>> I'm using CMake 2.6.2 and Eclipse CDT5 (not CDT4, could this be an
>>>> issue?)
>>>
>>> I don't think so.
>>> We could add some special variable, like
>>> CMAKE_MAKEFILE_PROJECT_FLAGS or CMAKE_MAKEFILE_PARALLELITY, and  
>>> use this
>>> in the makefile-based generators to set the "-jx" parameter for  
>>> make. But
>>> then again, this shouldn't be hardcoded in the CMakeLists.txt, so it
>>> could only be a cache variable.
>>> Or should cmake try to determine automatically how many cores  
>>> there are
>>> and add "-jx" automatically ? E.g. using  
>>> sysconf(_SC_NPROCESSORS_ONLN) ?
>>> This could also be disabled by default and enabled e.g. via an  
>>> option
>>> like CMAKE_AUTOMATIC_PARALLEL_MAKE_INVOCATION or something like  
>>> this.
>>
>> This sounds like an Eclipse issue...  Does this work:
>>
>> http://dev.eclipse.org/newslists/news.eclipse.tools.cdt/msg15742.html
>
> From that link:
>
>> project properties -> C/C++ Build -> Behaviour tab
>
> I can't find this here.
> I have Project -> Properties -> C/C++ Make project
> and then there is nothing with parallel builds.
>
> Can you see that option ?
>
> Alex
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