[oe] [meta-qt5] Qt 5.8 examples are not built

[Tim Jaacks]

Hello Hekki,

thanks for your reply. I cannot use sub-packages as a parameter to bitbake, it accepts recipe names only. Is this a new feature? I am on Yocto Jethro.

However, adding the qtbase-examples package to IMAGE_INSTALL does not make any difference. Maybe this works for other Qt packages (which use the qmake5_base_do_configure function just like before), but it doesn't work for qtbase, because the qtbase-examples packages is empty. As I said, the examples are not compiled at all, so they cannot be installed either.

 
Mit freundlichen Grüßen / Best regards
i.A. Tim Jaacks

Software Engineering
Garz & Fricke GmbH
Tempowerkring 2, 21079 Hamburg - Germany
Amtsgericht Hamburg HRB 60514
Geschäftsführer: Manfred Garz, Matthias Fricke
Phone: +49 40 791899 - 55
Fax:     +49 40 791899 - 39
tim.jaacks at garz-fricke.com
www.garz-fricke.com


> -----Ursprüngliche Nachricht-----
> Von: Heikki Sarkanen [mailto:heikki.sarkanen at tamtron.fi]
> Gesendet: Montag, 24. April 2017 18:55
> An: Tim Jaacks; openembedded-devel at lists.openembedded.org
> Betreff: Re: [meta-qt5] Qt 5.8 examples are not built
> 
> Hi,
> 
> I don't know how the PACKAGECONFIG in qtbase has worked but I have built
> Qt examples with meta-qt5 on both Qt 5.7 and 5.8 by using the "<qtrecipe>-
> examples" packages like in Wandboard wiki [1]. So if you want to build
> examples for qtquickcontrols2 you should build that package: "bitbake
> qtquickcontrols2-examples". If you want to include some examples to your
> image you could use 'IMAGE_INSTALL_append = "qtquickcontrols2-examples
> qtlocation-examples"'.
> 
> [1]
> http://wiki.wandboard.org/index.php/Building_Qt5_using_yocto_on_Wand
> board
> 
> BR,
> Heikki Sarkanen
> 
> ________________________________________
> From: openembedded-devel-bounces at lists.openembedded.org
> <openembedded-devel-bounces at lists.openembedded.org> on behalf of
> Tim Jaacks <tim.jaacks at garz-fricke.com>
> Sent: 24 April 2017 17:21
> To: openembedded-devel at lists.openembedded.org
> Subject: [oe] [meta-qt5] Qt 5.8 examples are not built
> 
> Hello,
> 
> I recently updated my meta-qt5 layer to the current head version
> (https://github.com/meta-qt5/meta-
> qt5/commit/9927aacfc3b341eb36764fbe7d5a929d4f05f327) resulting in an
> upgrade to Qt 5.8. Since this upgrade, the Qt examples are not built
> anymore, even though I added them to PACKAGECONFIG of qtbase. Is this a
> known issue?
> 
> In Qt 5.7 the examples were built correctly. As far as I understand, the line
> that used to make this work in versions before Qt 5.8 is in meta-qt5/recipes-
> qt/qt5/qt5.inc:
> 
> | EXTRA_QMAKEVARS_PRE += "${@bb.utils.contains('PACKAGECONFIG',
> 'examples', 'QT_BUILD_PARTS+=examples', '', d)}"
> 
> The qmake5_base_do_configure function in meta-
> qt5/classes/qmake5_base.bbclass evaluates this variable:
> 
> | if [ ! -z "${EXTRA_QMAKEVARS_PRE}" ]; then
> |     QMAKE_VARSUBST_PRE="${EXTRA_QMAKEVARS_PRE}"
> |     bbnote "qmake prevar substitution: '${EXTRA_QMAKEVARS_PRE}'"
> | fi
> 
> This leads to the following note in log.do_configure of qtbase:
> 
> | NOTE: qmake prevar substitution: ' QT_BUILD_PARTS+=examples'
> 
> However, this note is missing in Qt 5.8 because the call to
> qmake5_base_do_configure has been removed from the do_configure task
> of qtbase here:
> 
> https://github.com/meta-qt5/meta-
> qt5/commit/333949a8239dfa7788b35f1059614733e11a6a25#diff-
> 1120c73503f9288cc8a8c2b984fe4038L202
> 
> There is no comment on why this has been removed. I tried re-adding it,
> which resulted in a duplicate configure run. Obviously this is caused by this
> change in qtbase:
> 
> https://code.qt.io/cgit/qt/qtbase.git/commit/mkspecs/features/qt_parts.pr
> f?id=60e5a1c8effd4099f7b1414107b5cbb67c266210
> 
> Does anybody know whether this change was the reason for removing the
> qmake5_base_do_configure call?
> 
> However, the removal breaks the mechanism via EXTRA_QMAKEVARS_PRE,
> because this variable is no longer evaluated. As far as I can see, there is no
> option of building the Qt examples at the moment. Or am I missing anything?
> Any clue would be helpful.
> 
> 
> Mit freundlichen Grüßen / Best regards
> i.A. Tim Jaacks
> 
> Software Engineering
> Garz & Fricke GmbH
> Tempowerkring 2, 21079 Hamburg - Germany Amtsgericht Hamburg HRB
> 60514
> Geschäftsführer: Manfred Garz, Matthias Fricke
> Phone: +49 40 791899 - 55
> Fax:     +49 40 791899 - 39
> tim.jaacks at garz-fricke.com
> www.garz-fricke.com
> 
> 
> --
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