[Buildroot] [v3, 12/12] Add option for paranoid unsafe path checking

[Romain Naour <romain.naour@openwide.fr>]

Hi J?rg,

Le 13/12/2014 15:11, J?rg Krause a ?crit :
> On Sa, 2014-12-13 at 01:19 +0100, Romain Naour wrote:
>> Hello J?rg,
>>
>> Le 13/12/2014 01:04, J?rg Krause a ?crit :
>>> Hi Romain Naour,
>>>
>>> what should I do if a package build fails because of an unsafe path
>>> error? Propose a patch for the package?
>>>
>>
>> Yes, you needs patch the package's build system to remove the host path.
> 
> Many thanks! So hostpad and wpa_supplicant need patches.

You're welcome. 
I didn't know that these packages were problems with the paranoid wrapper.

> 
>>
>> This error appear if one of the following paths is used during the
>> cross-compilation:
>> "/lib"
>> "/usr/include"
>> "/usr/lib"
>> "/usr/local/include"
>> "/usr/local/lib"
> 
> One more question: Why are these pathes unsafe for cross-compilation?

You have a good example here: 
http://autobuild.buildroot.net/results/da0/da018caa1b79369bdff41d23b8696bc673625e1b/build-end.log

perl-gd try to link with the host (x86_64) libraries wile cross-compiling for mipsel target.
It also include host headers path /usr/include

This is this kind of error we want to avoid before adding a new package or bumping version.

Best regards,
-- 
Romain Naour

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