how to specify alternative library locations from recipes using cmake

how to specify alternative library locations from recipes using cmake

[Greg Kogut]

I hope this isn't too much of a n00b question.

I've developed a dozen new recipes (which I'll submit once they're stable), most of which use cmake.

Some of them install libraries to alternative library locations, e.g. '/opt/myprog/lib'. � This works correctly, and I've verified the libraries are installed to the correct locations in the filesystem image.

However, while building binaries dependent on these new libraries, also using cmake, cmake tries to point the linker to these directories on the host machine, not the cross-compiler filesystem. �With predictable results.

What is the correct practice for correctly guiding cmake to the right location? �I've searched the existing recipes which use cmake without finding anything.

Regards,
Greg
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Re: how to specify alternative library locations from recipes using cmake

[Khem Raj]

On Wed, Jan 25, 2012 at 11:24 AM, Greg Kogut <gkogut@yahoo.com> wrote:
> I hope this isn't too much of a n00b question.
>
> I've developed a dozen new recipes (which I'll submit once they're stable), most of which use cmake.
>
> Some of them install libraries to alternative library locations, e.g. '/opt/myprog/lib'.   This works correctly, and I've verified the libraries are installed to the correct locations in the filesystem image.
>
> However, while building binaries dependent on these new libraries, also using cmake, cmake tries to point the linker to these directories on the host machine, not the cross-compiler filesystem.  With predictable results.
>
> What is the correct practice for correctly guiding cmake to the right location?  I've searched the existing recipes which use cmake without finding anything.
>

Does adding something like
set( CMAKE_LIBRARY_PATH ${libdir} /opt/myprog/lib)
to classes/cmake.bbclass help

> Regards,
> Greg
> _______________________________________________
> Openembedded-devel mailing list
> Openembedded-devel@lists.openembedded.org
> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel

Re: how to specify alternative library locations from recipes using cmake

[Samuel Stirtzel]

2012/1/26 Khem Raj <raj.khem@gmail.com>:
> On Wed, Jan 25, 2012 at 11:24 AM, Greg Kogut <gkogut@yahoo.com> wrote:
>> I hope this isn't too much of a n00b question.
>>
>> I've developed a dozen new recipes (which I'll submit once they're stable), most of which use cmake.
>>
>> Some of them install libraries to alternative library locations, e.g. '/opt/myprog/lib'.   This works correctly, and I've verified the libraries are installed to the correct locations in the filesystem image.
>>
>> However, while building binaries dependent on these new libraries, also using cmake, cmake tries to point the linker to these directories on the host machine, not the cross-compiler filesystem.  With predictable results.
>>
>> What is the correct practice for correctly guiding cmake to the right location?  I've searched the existing recipes which use cmake without finding anything.
>>
>
> Does adding something like
> set( CMAKE_LIBRARY_PATH ${libdir} /opt/myprog/lib)
> to classes/cmake.bbclass help
>
>> Regards,
>> Greg
>> _______________________________________________
>> Openembedded-devel mailing list
>> Openembedded-devel@lists.openembedded.org
>> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
>
> _______________________________________________
> Openembedded-devel mailing list
> Openembedded-devel@lists.openembedded.org
> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel

Since CMake 2.4 it is possible to append without overwriting:
LIST( APPEND CMAKE_LIBRARY_PATH path_to_libs )

However, the same thing Khem proposed can be done per recipe,
apply the following line to your recipe and change it to suit your needs:
EXTRA_OECMAKE = "-DCMAKE_LIBRARY_PATH=${libdir} ${path_to_libs}"


Maybe it is necessary to use escaped quoting marks like \"${libdir}
${path_to_libs}\" to group the values.

-- 
Regards
Samuel