[CMake] triggering rebuild on windows

[David Cole]

Your original question was about why not everything was recompiling... Then,
when a solution is offered, you say "but if I do that everything will
recompile!"

We thought that's what you wanted... :-)


On Mon, Aug 31, 2009 at 2:22 PM, j s <j.s4403 at gmail.com> wrote:

> That wouldn't be good for what I am trying to do.  I just need:
> _USE_MATH_DEFINES
>
> for all files so that Visual C++ recognizes M_PI.  Creating a header file
> dependency could trigger a huge storm of recompilations just by touching the
> file.
>
> I'll just have to be careful around Visual C++.
>
> Juan
>
> On Mon, Aug 31, 2009 at 11:16 AM, Clinton Stimpson <clinton at elemtech.com>wrote:
>
>>  On Sunday 30 August 2009 12:20:51 pm Philip Lowman wrote:
>> > On Tue, Aug 25, 2009 at 1:32 PM, j s <j.s4403 at gmail.com> wrote:
>> > > I am using the Visual Studio generator from the cmake binary
>> > > distribution. If I change flags using ADD_DEFINITIONS, I notice that
>> it
>> > > doesn't trigger a rebuild of all the affected files.
>> > >
>> > > Is this by design?
>> >
>> > I've known and worked around this limitation for a few years now.  The
>> > easiest thing to do is clean the entire solution if you change any
>> compile
>> > flags whatsoever (unless you know exactly what you changed and the
>> impact
>> > of doing it).
>> >
>> > The problem is that VS doesn't remember the old flags when you open up a
>> > project file with new flags so isn't capable of cleaning the project for
>> > you.  This issue could probably be worked around in CMake itself one way
>> or
>> > another but it's never been worked on to my knowledge.
>>
>> Or how about putting it into a configured header file instead?
>> Visual Studio rebuilds correctly if you do it that way.
>>
>> Clint
>>
>>
>
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