Enable to run QT application in beagleboard (Angstrom)

mehkants

hello everyone.

I want to run QT application in beagleboard - xm (target board).
in beagle board, i had boot Angstrom OS.

so, what i did.

i had install arm cross complier and qt library files for beagleboard in host PC(ubuntu 11.04).

Using QT creater i had made one qt application(that i want to run in beagleboard).

in target board (beagle board), i set enivorment for qt (copy qt library files which i found from /opt/qt-arm/lib (from host PC). and also set PATH variable of /etc/profile as /opt/qt-arm/lib).

and also copy project's executable file to beagleboard

when i run that executable file using below command,

#./app -qws

i got error like:

./app: error while loading shared libraries: /opt/qt-arm/lib/libQtGuiE.so.4: file too short.

help me. how to fix this error.

messi

Solution 1

Problems during the copy process. Please verify the lib size again with the original used one on your host PC.

Solution 2

/opt/qt-arm/lib/libQtGuiE.so.4 is a soft link which points to the wrong library
verify it with "ls -asl /opt/qt-arm/lib/libQtGuiE.so.4"

Solution 3

ldconfig found another version of libQtGuiE
Check LD_LIBRARY_PATH and /etc/ld.so.conf

mehkants

fixed problem.

in host side, libQtGuiE.so.4, libQtGuiE.so.4.6, libQtGuiE.so.4.6.2 all are linked together.

but when i copied it to beagleboard, they were not linked together.

how to link together?

messi

tar cvfz QtLib.tgz /opt/qt-arm/lib/

or -

copie only the non link file an create the soft link by:
ln -s libQtGuiE.so.4.6.2 libQtGuiE.so.4
ln -s libQtGuiE.so.4.6.2 libQtGuiE.so.4.6

luca

When you copy library from pc to the Angstrom SD card use rsync:
@
rsync -av PC/librarypath/ SDCARD/librarypath/
@

you also can use cp command but I don't remember the parameter to preserve symbolic links.

messi

cp -p

or

cp --preserve=links