[CMake] find_packge behavior regarding enabled languages

[xantares 09]

>From: eike at sf-mail.de
>To: cmake at cmake.org
>Date: Fri, 25 Jan 2013 19:00:56 +0100
>Subject: Re: [CMake] find_packge behavior regarding enabled languages

>xantares 09 wrote:
> >From: xantares09 at hotmail.com
> >To: cmake at cmake.org
> >Date: Thu, 24 Jan 2013 08:12:49 +0000
> >Subject: [CMake] find_packge behavior regarding enabled languages
 
> >I noticed that when all languages are disabled through the project command:
> >project ( Foo NONE )
> >
>> >... then a dependent Bar sub-package cannot be detected from it's
>> >BarConfig.cmake configuration file: find_package ( Bar MODULE )
>> >
>> >Do you think it's a bug ? A feature ?
>> >
>> >I explicitely disabled all languages to avoid compiler checks which are
>> >useless for my documentation package.
>> >
>> >Altough it works with at least one language enabled (or let default C &
>> >C++), I wondered if there's by chance any mean to avoid compiler checks
>> >while still being able to detect config files, or if there's a
>> >undocumented behavior of the find_package command regarding languages.
 
>> I investigated my problem further and I noticed that find_package only finds
>> the config file if located on a specific location depending on enabled
>> languages: - no languages enabled:              
>> /usr/lib/cmake/bar/BarConfig.cmake - at least one language enabled:  
>> /usr/lib64/cmake/bar/BarConfig.cmake
>> 
>> So selected languages have an impact on the searched library path : it takes
>> the arch into account if one is enabled.
>> 
>> My box is a Fedora 18 x86_64 with latest cmake 2.8.10.
>> Should I report it ?
 
>I guess the reason is that it needs CMAKE_SIZEOF_VOID_P to know the difference 
>between lib and lib64, but that is only known if it has at least one compiler 
>to check.
 
>But what do you need a library for if you don't have a compiler?
 
>Eike
>-- 


Hi,

Yep that's it: if I set CMAKE_SIZEOF_VOID_P it works.
But you can't guess it without compiling :(

It's a latex documentation package as cmake provides UseLatex and stuff, also very practical for writing rules for html, ...

Regards.


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