Re: Cannot build OpenGL application on Qt5 on armel/hf
That's the intended behavior. There isn't a reasonable way around it. You'll either need to port it to use GL ES or disable it on these archs.
Scott K
On September 18, 2017 5:50:24 PM EDT, John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> wrote:
>Hi!
>
>I have uploaded a new version of virtualjaguar today which uses Qt5 by
>default
>[1]. Unfortunately, this brought a regression on armel and armhf in the
>form
>of an FTBFS [2]:
>
>g++ -c -pipe `sdl-config --cflags` -O2 -Wdate-time -D_FORTIFY_SOURCE=2
>-ffast-math -fomit-frame-pointer -Wall -W -D_REENTRANT -fPIC
>-D__GCCUNIX__ -DQT_NO_DEBUG
>-DQT_OPENGL_LIB -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I. -Isrc
>-Isrc/gui -isystem /usr/include/arm-linux-gnueabi/qt5 -isystem
>/usr/include/arm-linux-gnueabi/qt5/QtOpenGL -isystem
>/usr/include/arm-linux-gnueabi/qt5/QtWidgets -isystem
>/usr/include/arm-linux-gnueabi/qt5/QtGui -isystem
>/usr/include/arm-linux-gnueabi/qt5/QtCore -Iobj
>-I/usr/lib/arm-linux-gnueabi/qt5/mkspecs/linux-g++ -o obj/glwidget.o
>src/gui/glwidget.cpp
>src/gui/glwidget.cpp: In member function 'virtual void
>GLWidget::initializeGL()':
>src/gui/glwidget.cpp:49:12: error: 'GL_ALPHA_TEST' was not declared in
>this scope
> glDisable(GL_ALPHA_TEST);
> ^~~~~~~~~~~~~
>src/gui/glwidget.cpp:49:12: note: suggested alternative:
>'GL_ALPHA8_OES'
> glDisable(GL_ALPHA_TEST);
> ^~~~~~~~~~~~~
> GL_ALPHA8_OES
>src/gui/glwidget.cpp:52:12: error: 'GL_POLYGON_SMOOTH' was not declared
>in this scope
> glDisable(GL_POLYGON_SMOOTH);
> ^~~~~~~~~~~~~~~~~
>(...)
>
>Looking at the rules file of qtbase-opensource-src, it's obvious where
>this
>regression comes from, namely from the fact that qtbase-opensource-src
>is
>configured to use OpenGL ES instead of proper desktop OpenGL on armel
>and armhf [3].
>
>Does anyone know whether there is a way to address this issue on
>armel/hf
>or do I have to disable virtualjaguar on these architectures?
>
>CC'ing debian-arm@l.d.o in case someone there knows about a possible
>workaround.
>
>Adrian
>
>> [1]
>https://packages.qa.debian.org/v/virtualjaguar/news/20170918T181332Z.html
>> [2]
>https://buildd.debian.org/status/fetch.php?pkg=virtualjaguar&arch=armel&ver=2.1.3-1&stamp=1505760397&raw=0
>> [3]
>https://anonscm.debian.org/cgit/pkg-kde/qt/qtbase.git/tree/debian/rules#n29
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