[Buildroot] [PATCH v6 0/9] bump/choice for qt 5.8.0

[Andreas Naumann]

Hi,

first of all, thanks everybody for taking over and pushing this further. 
My finding on this below..

Am 06.02.2017 um 16:40 schrieb Thomas Petazzoni:
> Hello,
>
> On Tue, 31 Jan 2017 08:59:02 +0100, Zoltan Gyarmati wrote:
>
>> The Qt 5.8 config (and pyqt5) was tested on Raspberry Pi.
>
> As Arnout said we are trying to apply this patch series (or actually a
> subset of it). We have already fixed the comments that people have
> raised, and you can see the result at:
>
>   http://git.free-electrons.com/users/thomas-petazzoni/buildroot/log/?h=qt5-bump
>
> Unfortunately, this fails to build with the following defconfig:
>
> BR2_arm=y
> BR2_cortex_a8=y
> BR2_TOOLCHAIN_EXTERNAL=y
> BR2_PACKAGE_QT5=y
> BR2_PACKAGE_QT5BASE_LICENSE_APPROVED=y
> BR2_PACKAGE_QT5DECLARATIVE=y
> BR2_PACKAGE_QT5IMAGEFORMATS=y
> BR2_PACKAGE_QT5LOCATION=y
> BR2_PACKAGE_QT5MULTIMEDIA=y
> BR2_PACKAGE_QT5SENSORS=y
> BR2_PACKAGE_QT5SERIALBUS=y
> BR2_PACKAGE_QT5SVG=y
> BR2_PACKAGE_QT5TOOLS=y
> BR2_PACKAGE_QT5TOOLS_PIXELTOOL=y
> BR2_PACKAGE_QT5TOOLS_QTDIAG=y
> BR2_PACKAGE_QT5TOOLS_QTPATHS=y
> BR2_PACKAGE_QT5TOOLS_QTPLUGININFO=y
> BR2_PACKAGE_QT5WEBCHANNEL=y
> BR2_PACKAGE_QT5ENGINIO=y
>
> With the following error message during the qt5base build:
>
>   Project ERROR: Library 'libpng' is not defined.
>
> Could you take our branch, and see why there is this build failure ?

I have tried your branch and defconfig and see the same failure. 
Unfortunately I have no idea why it happens, I have never observed that 
problem.

There are reports about these kind of problem, but without a hint for 
the real reason.
https://bugreports.qt.io/browse/QTBUG-57148
https://bugreports.qt.io/browse/QTBUG-57794

After fiddling a little, I can get over it by selecting 
BR2_PACKAGE_QT5BASE_FONTCONFIG. Unfortunately I run out of time 
debugging further for now.


regards,
Andreas

>
> Note that our branch intentionally doesn't contain the OpenGL related
> patches of your series, because they are not ready for merging (see the
> comments).
>
> Thanks!
>
> Thomas
>