Thread: QtEmbedded 4.4.1/Phonon/CrossCompile-arm

Hi,
Has anyone successfully cross-compiled for Arm - QtEmbedded using phonon.
I needed many dependancies. Installed and cross-compiled these
1) Glib 2.0
2) liboil
3) Gstreamer
4) Gstreamer -base
5) LibXML2
Had no problems. Then I configured Qt and it detected Glib, Gstreamer.
When I compiled Qt I received this error.
/usr/bin/ld - skipping incompatibable /usr/home/local/arm/lib libglib-2.0.so when searching for -lglib-2.0
/usr/bin/ld - skipping incompatibable /usr/home/local/arm/lib libgmodule-2.0.so when searching for -lglibmodule-2.0
/usr/bin/ld - skipping incompatibable /usr/home/local/arm/lib libgstream-0.10.so when searching for -llibGstream-0.10
Cannot find -lgstreamer-0.10.so
error

When I googled this error it seems that libraries are built for 64bit under a 32bit architecture. I tried many CC options for glib, gstreamer and they all compiled fine under arm-linux-gcc.

Anyone have successfully completed this feat?

Thanks.

Hi,
After talking to Qt-support they pointed me in the right direction in solving this problem.

1) I did not have the environment variable PKG_CONFIG set
2) I DID have the PKG_CONFIG_PATH environment variable set to my CC directory /usr/local/arm/lib
3) I checked the qt configure script AND it does NOT use the PKG_CONFIG unless the configure option '-force-pkg-config' is set. This is not documented anywhere, so I did not know about this or how to use it.
4) In my previous attempt to load the glib, gstreamer libs, I put all the paths in the configure script, because I did not know any other way.
5) I proceeded to set the environment variable PKG_CONFIG=/usr/bin/pkg-config (although this is not needed if '-force-pkg-config' is set - the qt script will pull the information from WHICH pkg-config. I also ran a configure script with -force-pkg-config.
6) PKG_CONFIG_PATH = /usr/local/arm/lib/pkg-config. 'cross compiled libs'
7) NOW COMPILATION IS WORKING!!! - Probably because the package configs have all the information needed for ALL the library dependencies.

Hi,

I trying Gstreamer on Qt4.6.1 source.

I compiled Gstreamer with scratchbox2 (cross compiler tool chain used is arm-linux-gcc-4.3.2.tgz) by following this blog.
http://felipec.wordpress.com/2009/12...ed-with-sbox2/

cross compilation was fine, and integration with Qt phonon went without much trouble.

Now when I compile 'qmediaplayer' in demo folder of qt4.6.1 source tree,I am get the below error message.

arm-linux-g++ -Wl,-rpath-link,/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib -fno-exceptions -Wl,-rpath,/new_disk/Embedded/qt-4.6/build/lib -Wl,-rpath,/new_disk/Embedded/qt-4.6/build/lib -o qmediaplayer .obj/debug-shared-emb-arm/main.o .obj/debug-shared-emb-arm/mediaplayer.o .obj/debug-shared-emb-arm/moc_mediaplayer.o .obj/debug-shared-emb-arm/qrc_mediaplayer.o -L/opt/gst/lib -L/opt/gst/lib/gstreamer-0.10 -L/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib -lphonon -L/opt/gst/lib -L/opt/gst/lib/gstreamer-0.10 -L/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib -lQtGui -lQtNetwork -lQtCore -lpthread
/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: libgthread-2.0.so.0, needed by /root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib/libQtGui.so, not found (try using -rpath or -rpath-link)
/usr/local/arm/4.3.2/bin/../lib/gcc/arm-none-linux-gnueabi/4.3.2/../../../../arm-none-linux-gnueabi/bin/ld: warning: libglib-2.0.so.0, needed by /root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib/libQtGui.so, not found (try using -rpath or -rpath-link)
/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib/libQtCore.so: undefined reference to `g_threads_got_initialized'
/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib/libQtCore.so: undefined reference to `g_main_context_ref'
/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib/libQtCore.so: undefined reference to `g_main_context_unref'
/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib/libQtCore.so: undefined reference to `g_main_context_default'
/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib/libQtCore.so: undefined reference to `g_main_context_pending'
/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib/libQtCore.so: undefined reference to `g_thread_init'
/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib/libQtCore.so: undefined reference to `g_source_set_priority'
/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib/libQtCore.so: undefined reference to `g_source_unref'
/root/QtEmbedded/qt-everywhere-opensource-src-4.6.1/lib/libQtGui.so: undefined reference to `g_source_set_can_recurse'


Kindly help in fixing this issue.

Thanks and regards,
Ratheendran