[CMake] Abuse of find_package COMPONENTS, or not?

[Adolfo Rodríguez]

I think Dennis refers to setting cmake variables to define the use of
multithreading, static, or debug libs (or single/double precision in your
case). For example:

set(Boost_USE_STATIC_LIBS   ON)
set(Boost_USE_MULTITHREADED ON)
find_package( Boost )

I would also second the proposal of using such variables instead of
components.

cheers,

Adolfo

On Wed, May 20, 2009 at 4:21 PM, Marcel Loose <loose at astron.nl> wrote:

> Hi Denis,
>
> What do you mean with like FindBoost did? Can you be a bit more
> specific?
>
> Boost components are AFAIK independent of one another, and they're
> definitely not mutually exclusive, which is the case in my propsed setup
> of FindFFTW?
>
> For example:
>
>  find_package(FFTW COMPONENTS single double)
>
> shoud be flagged as an error, because single and double are mutaully
> exclusive.
>
> Best regards,
> Marcel Loose.
>
>
> -----Original Message-----
> From: Marcel Loose <loose at astron.nl>
> To: cmake at cmake.org
> Subject: [CMake] Abuse of find_package COMPONENTS, or not?
> Date: Wed, 20 May 2009 16:10:06 +0200
>
> Hi all,
>
> I am busy writing a FindFFTW macro. Depending on whether you want to use
> single or double precision you should include a different header file
> and link to a different library. The same is true when using
> parallelization like mpi or threads.
>
> Now I was considering to pass these options as COMPONENTS, since, AFAIK,
> that's the only way to pass parameters to a FindXXX macro.
> So, for example, the user of FindFFTW would do something like:
>
>  find_package(FFTW COMPONENTS single threads)
>
> Do you guys consider this a good or a bad idea? If you think it's a bad
> idea, do you have a suggestion how to do things differently?
>
> Best regards,
> Marcel Loose.
>
>
>
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-- 
Adolfo Rodríguez Tsouroukdissian

Robotics engineer
PAL ROBOTICS S.L
http://www.pal-robotics.com
Tel. +34.93.414.53.47
Fax.+34.93.209.11.09
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