[yocto] building qtbase for raspberry pi fails

[Felix01 Fischer]

Hello all,
I managed to get qtbase building with a raspberry pi.
In the end, all you have to do is to add a .bbappend for qtbase with the 
following

QT_CONFIG_FLAGS += " \
    -device linux-rasp-pi-g++ \
    -device-option 
CROSS_COMPILE=$PATH_TO_SYSROOT_DIR/x86_64-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi- 
\
    -I$PATH_TO_SYSROOT_DIR/raspberrypi/usr/include/interface/vcos/pthreads 
\
"
and then it builds.

Unfortunately any qt application on the rasp will always fail with error 
0b300b :-(






yocto-bounces at yoctoproject.org schrieb am 06.05.2014 13:56:57:

> Von: Felix01 Fischer <felix01.fischer at iav.de>
> An: Khem Raj <raj.khem at gmail.com>, 
> Kopie: "yocto at yoctoproject.org" <yocto at yoctoproject.org>
> Datum: 06.05.2014 15:54
> Betreff: [yocto] Antwort: Re:  building qtbase for raspberry pi fails
> Gesendet von: yocto-bounces at yoctoproject.org
> 
> Khem Raj <raj.khem at gmail.com> schrieb am 30.04.2014 10:14:29:
> 
> > Von: Khem Raj <raj.khem at gmail.com> 
> > An: Felix01 Fischer <felix01.fischer at iav.de>, 
> > Kopie: "yocto at yoctoproject.org" <yocto at yoctoproject.org> 
> > Datum: 30.04.2014 10:15 
> > Betreff: Re: [yocto] building qtbase for raspberry pi fails 
> > 
> > On Tue, Apr 29, 2014 at 4:37 AM, Felix01 Fischer 
> > <felix01.fischer at iav.de> wrote:
> > > But still I haven't figured out how to get this build correctly so 
qtbase
> > > can find and use it.
> > 
> > I am assuming you need to select this user land recipe to provide
> > virtual/libgles2 virtual/egl
> > 
> > PREFERRED_PROVIDER_virtual/egl = "userland"
> > PREFERRED_PROVIDER_virtual/libgres2 = "user land"
> > 
> > in config metadata
> 
> 
> 
> I think you have two typos in the second line. 
> It should be 
> PREFERRED_PROVIDER_virtual/libgles2 ?= "userland" 
> right? 
> 
> If yes, then this is already set in rpi-default-providers.inc
> (see here http://git.yoctoproject.org/cgit/cgit.cgi/meta-
> raspberrypi/plain/conf/machine/include/rpi-default-providers.inc )
> 
> Nevertheless I managed to build qtbase now, I still have to figure 
> out which options exactly are responsible for this :-)
> 
> One thing I now for sure: 
> 
> I have to add the following line to 
> "/media/yocto_build/qt5-raspb/build/tmp/work/armv6-vfp-poky-linux-
> gnueabi/atbase/5.2.1-r0/qtbase-opensource-src-5.2.1/mkspecs/linux-
> oe-g++/qmake.conf" 
> 
> "QMAKE_LIBS_EGL += "/media/yocto_build/qt5-raspb/build/tmp/sysroots/
> raspberrypi/usr/lib/libGLESv2.so"
> 
> 2 Questions: 
> First, why isn't this library found by default? It clearly is in /
> usr/lib so this should be a no brainer I think 
> Second, If I have to add this line manually via a bbappend how do I do 
this? 
> I tried by just adding this line to a qtbase_5.2.1.bbappend, by 
> prefixing it with OE_, by substituting the full path with $
> {STAGING_DIR_TARGET} 
> and by trying all of these steps in meta-qt5/recipes-qt/qt5/
> qtbase.inc but with no success so far
> 
> 
> 
> Unfortunately, I still get the from before when trying to run a Qt 
> programm on the raspberrypi:
> 
> EGLFS: Unable to query physical screen size, defaulting to 100 dpi. 
> EGLFS: To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and 
> QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters). 
> libpng warning: iCCP: Not recognizing known sRGB profile that has been 
edited 
> EGL Error : Could not create the egl surface: error = 0x300b
> 
> 
> anny suggestions?
> 
> Felix-- 
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> yocto mailing list
> yocto at yoctoproject.org
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