On 03/24/2011 11:34 AM, Ruben Smits wrote:
> You probably already tried the set_source_files_properties with OBJECT_DEPEND ?
Ah ... missed your answer.

The problem is that, for OBJECT_DEPENDS to work, I need to add the
*object file* to it. I.e. I need to add

RealTimeTypekitTypes.o

to the OBJECT_DEPENDS of

RealTimeTypekitTypes2.cpp

Which is my main problem right now: I don't know how to get the object
name from the source name in a cross-platform way :(

Sylvain

On Thu, Mar 24, 2011 at 11:34 AM, Ruben Smits
<Ruben [dot] Smits [..] ...> wrote:
>
> On 24 Mar 2011, at 10:42, Sylvain Joyeux wrote:
>
>> The problem
>> -----------
>> The RealTimeTypekitTypes* files require a lot of memory to compile. It
>> has become quite common at my lab that people complain about the RTT not
>> compiling at all, or dramatically slowing down their machine (think
>> "swap"). I'm not even talking about our robot which has "only" 2G of memory.
>>
>> The idea of the solution
>> ------------------------
>> optionally tell cmake to never compile the two files in parallel
>>
>> The technical idea
>> ------------------
>> I though that I could add a dependency between one of the two files and
>> the object of the other. I.e. on linux add the following dependency:
>>
>>    RealTimeTypekitTypes2.cpp => RealTimeTypekitTypes.o
>>
>> Unfortunately, I don't how to get the object file name from the source
>> file in a robust, cross-platform way. CMake only provides the name of
>> the extension, but does not tell (as far as I can get) if the new
>> extension replaces the source file extension or is added to it ...
>>
>> Any insights ?
>
> You probably already tried the set_source_files_properties with OBJECT_DEPEND ?

Sylvain, did you have a solution for this yet ? We're running into
this problem too...

Peter
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