FTBFS on armel natty

[Jani Monoses]

Binary package hint: mumble

http://launchpadlibrarian.net/65379724/buildlog_ubuntu-natty-armel.mumble_1.2.3-1ubuntu1_FAILEDTOBUILD.txt.gz

g++ -c -include release/mumble11x -pipe -Wfatal-errors -Wshadow -Woverloaded-virtual -Wold-style-cast -Wconversion -Wsign-compare -fvisibility=hidden -g -Wall -Wextra -O2 -I/usr/include/alsa -D_REENTRANT -Wall -W -D_REENTRANT -DNO_UPDATE_CHECK -DPLUGIN_PATH=/usr/lib/mumble -DMUMBLE_VERSION=1.2.3-1ubuntu1 -DHAVE_LIMITS_H -DHAVE_ENDIAN_H -DRESTRICT=__restrict__ -D_FORTIFY_SOURCE=2 -DMUMBLE_VERSION_STRING=1.1.8 -DMUMBLE_VERSION=1.1.x -DCOMPAT_CLIENT -DUSE_ALSA -DUSE_OSS -DUSE_PULSEAUDIO -DUSE_DBUS -DUSE_SPEECHD -DQT_NO_DEBUG -DQT_SQL_LIB -DQT_XML_LIB -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtNetwork -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtOpenGL -I/usr/include/qt4/QtXml -I/usr/include/qt4/QtSql -I/usr/include/qt4 -I/usr/include/qt4/QtDBus -I.. -I/usr/lib/oss/include -Irelease -I/usr/X11R6/include -I. -o release/AudioStats.o AudioStats.cpp
<command-line>:0:0: warning: "MUMBLE_VERSION" redefined
<command-line>:0:0: note: this is the location of the previous definition
AudioStats.cpp: In member function 'virtual void AudioEchoWidget::initializeGL()':
AudioStats.cpp:132:12: error: 'GL_LIGHTING' was not declared in this scope
compilation terminated due to -Wfatal-errors.
make[3]: *** [release/AudioStats.o] Error 1

[Dr. David Alan Gilbert (davidgil-uk)]

This appears related to Qt on ARM using the newer GLES2 rather than GL:

  1) It calls GL calls without #including the GL headers itself, and gets lucky on other platforms with Qt including them
  2) It doesn't have a dependency in on mesa even though it's including the headers directly.
  3) If it did include/link with GL it might cause a clash with the GLES that's linked.

See:
  https://wiki.linaro.org/WorkingGroups/Middleware/Graphics/Docs/GLPortingGuide
  http://www.khronos.org/opengles/2_X/

[Dr. David Alan Gilbert (davidgil-uk)]

I reckon the quick fix here is to just ifdef out the AudioStats GL code either on ARM or preferably if there is a useful ifdef for GLES2.

Given what it's doing I think the right fix is probably to avoid GL or go through standard Qt interfaces rather than calling GL directly.

Dave

[Thorvald Natvig (slicer)]

There's already work in progress upstream to switch this to regular Qt drawing. Qt drawing is slightly slower, but a lot more portable.

[Loïc Minier (lool)]

Cool, is there any update on this upstream work? Any upstream bug or branch we should watch?

[Jani Monoses (jani)]

On #mumble I was pointed at this commit which is not in master yet but on a separate branch
https://github.com/pcgod/mumble-wip/commit/393d013ac86a3b27cdff2b1a69501995314f6da4
I wonder if we should apply it or wait to see if a new minor release appears before 11.04