[CMake] Re: FindBoost.cmake: please test

[Andreas Pakulat]

On 20.01.08 19:45:03, Hendrik Sattler wrote:
> Am Sonntag 20 Januar 2008 schrieb Andreas Pakulat:
> > On 20.01.08 15:38:44, Rodolfo Lima wrote:
> > > Andreas Pakulat escreveu:
> > > > The reason I did that was to simplify the module code.
> > >
> > > I see, but this variable is only used in a if clause, so instead of
> > > writing
> > >
> > > IF( Boost_USE_NONMULTITHREADED )
> > >     SET (_boost_MULTITHREADED "")
> > > ENDIF( Boost_USE_NONMULTITHREADED )
> > >
> > > you could write
> > >
> > > IF(NOT Boost_USE_MULTITHREADED )
> > >     SET (_boost_MULTITHREADED "")
> > > ENDIF(NOT Boost_USE_MULTITHREADED )
> > >
> > > with the same semantics of the former clause, isn't it?
> >
> > No, because the default should be to use the multithreaded version.
> > Actually I currently don't see a way to do this in CMake, without
> > requiring the user to set Boost_USE_MULTITHREAD always.
> 
> if ( NOT DEFINED Boost_USE_MULTITHREADED )
>   set ( Boost_USE_MULTITHREADED ON CACHE BOOL "" FORCE )
> endif ( NOT DEFINED Boost_USE_MULTITHREADED )
> 
> The user can then switch it off in ccmake easily. Note: ccmake only 
> understands ON/OFF for BOOL.

Miguel just reminded me of OPTION() which I think is a much better way
of doing these options.

Andreas

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