[yocto] meta-toolchain-qt with Qt Creator

[Laurentiu Palcu]

Hi Diego,

On Mon, Oct 07, 2013 at 08:18:00AM -0300, Diego Sueiro wrote:
> 2013/10/7 Laurentiu Palcu <laurentiu.palcu at intel.com>
> 
>     Hi Diego,
>     It's a little more complicated than that. After building the toolchain,
>     all binaries have the default absolute path to the dynamic loader
>     (/opt/poky/...) hardcoded in the elf INTERP section. This is easy to
>     change. However, other binaries may or may not have other hardcoded
>     paths to search for different things (like configs, etc.). Most of these
>     could be easily fixed by providing the binary with an option or setting
>     an environment variable to instruct it where to find what it needs. Take
>     for example the gcc --sysroot option. By default gcc will search for the
>     sysroot in the default location (starting with /opt/poky), but providing
>     a --sysroot option, we override this default path.
> 
>     So, even though, for relocation, changing the INTERP section may suffice
>     for most of the binaries, some may need more tweaking.
> 
>     A quick search on google brought me to this page:
>     http://qt-project.org/doc/qt-4.8/qmake-environment-reference.html
> 
>     It turns out that QMAKESPEC environment variable is what QT creator
>     looks at to be able to locate qmake.conf. So, perhaps, we need to add
>     this to the environment file and the problem should be fixed...
> 
>     Can you please test this?
> 
>     Thanks,
>     Laurentiu
> 
> 
> 
> Laurentiu,
> 
> Thanks for the explanation.
> 
> I took a look at environment-setup-armv7a-vfp-neon-poky-linux-gnueabi file and
> it is already exporting the QMAKESPEC variable to the right path.
Stupid me, I should've looked in the meta-toolchain-qt.inc first. Yes,
it appears to be set...

> Maybe this variable is overridden by another one or by Qt Creator based on some
> INTERP.
> 
> I did a "grep -r \/poky\/1\.4\.2 ./*" on the toolchain (installed outside
> default path) and this is the results:
> 
>     http://pastebin.com/us9p5vVp
> 
> 
> 
> Unfortunately I don't have enough knowledge to track this.
Would you please file a bug on this? I'll have a look as soon as I find
some time.

Thanks,
Laurentiu
> 
> 
> Regards,
> 
> --
> *dS
> Diego Sueiro
>