Library 'libQtCore.so.4' was not found in 'java.library.path

Discussion:

a***@gmail.com

2009-07-27 20:16:35 UTC

Hello !

I am trying the Hello World example, but when I try to run it, I get
this message :

-=[***@Noname]=(~/Documents/workspace/examples/tutorial)> java
HelloWorld <(21:45:50)>
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.trolltech.qt.QtJambiObject.<clinit>(QtJambiObject.java:58)
at HelloWorld.main(HelloWorld.java:9)
Caused by: java.lang.RuntimeException: Loading library failed,
progress so far:
No 'qtjambi-deployment.xml' found in classpath, loading libraries via
'java.library.path'
Loading library: 'libQtCore.so.4'...
- using 'java.library.path'

at com.trolltech.qt.internal.NativeLibraryManager.loadNativeLibrary(NativeLibraryManager.java:429)
at com.trolltech.qt.internal.NativeLibraryManager.loadQtLibrary(NativeLibraryManager.java:353)
at com.trolltech.qt.Utilities.loadQtLibrary(Utilities.java:138)
at com.trolltech.qt.Utilities.loadQtLibrary(Utilities.java:134)
at com.trolltech.qt.QtJambi_LibraryInitializer.<clinit>(QtJambi_LibraryInitializer.java:54)
... 2 more
Caused by: java.lang.RuntimeException: Library 'libQtCore.so.4' was
not found in 'java.library.path'=/opt/sun-jdk-1.6.0.14/jre/lib/i386/server:/opt/sun-jdk-1.6.0.14/jre/lib/i386:/opt/sun-jdk-1.6.0.14/jre/../lib/i386:/usr/share/qtjambi-4/lib/:.:/usr/java/packages/lib/i386:/lib:/usr/lib
at com.trolltech.qt.internal.NativeLibraryManager.loadLibrary_helper(NativeLibraryManager.java:484)
at com.trolltech.qt.internal.NativeLibraryManager.loadNativeLibrary(NativeLibraryManager.java:424)
... 6 more

My classpath and ld_library_path :

-=[***@Noname]=(/)> echo $CLASSPATH
<(22:06:49)>
/usr/share/qtjambi-4/lib/qtjambi.jar:/usr/share/qtjambi-4/lib/qtjambi-examples.jar:/usr/share/qtjambi-4/lib/qtjambi-designer.jar:/usr/share/qtjambi-4/lib/ant-qtjambi.jar:.
-=[***@Noname]=(/)> echo $LD_LIBRARY_PATH
<(22:15:55)>
/usr/share/qtjambi-4/lib/:.

Do you know how to solve the problem ?

Thanks!

a***@gmail.com

2009-07-27 20:20:10 UTC

Permalink

Re,

And I have forgotten the path of libQtCore :
-=[***@Noname]=(/)> sudo find -name "libQtCore.so.4"
./usr/lib/qt4/libQtCore.so.4

Thanks!

Post by a***@gmail.com
Hello !
I am trying the Hello World example, but when I try to run it, I get
HelloWorld <(21:45:50)>
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.trolltech.qt.QtJambiObject.<clinit>(QtJambiObject.java:58)
at HelloWorld.main(HelloWorld.java:9)
Caused by: java.lang.RuntimeException: Loading library failed,
No 'qtjambi-deployment.xml' found in classpath, loading libraries via
'java.library.path'
Loading library: 'libQtCore.so.4'...
- using 'java.library.path'
at
com.trolltech.qt.internal.NativeLibraryManager.loadNativeLibrary(NativeLibraryManager.java:429)
at
com.trolltech.qt.internal.NativeLibraryManager.loadQtLibrary(NativeLibraryManager.java:353)
at com.trolltech.qt.Utilities.loadQtLibrary(Utilities.java:138)
at com.trolltech.qt.Utilities.loadQtLibrary(Utilities.java:134)
at
com.trolltech.qt.QtJambi_LibraryInitializer.<clinit>(QtJambi_LibraryInitializer.java:54)
... 2 more
Caused by: java.lang.RuntimeException: Library 'libQtCore.so.4' was
not found in
'java.library.path'=/opt/sun-jdk-1.6.0.14/jre/lib/i386/server:/opt/sun-jdk-1.6.0.14/jre/lib/i386:/opt/sun-jdk-1.6.0.14/jre/../lib/i386:/usr/share/qtjambi-4/lib/:.:/usr/java/packages/lib/i386:/lib:/usr/lib
at
com.trolltech.qt.internal.NativeLibraryManager.loadLibrary_helper(NativeLibraryManager.java:484)
at
com.trolltech.qt.internal.NativeLibraryManager.loadNativeLibrary(NativeLibraryManager.java:424)
... 6 more
<(22:06:49)>
/usr/share/qtjambi-4/lib/qtjambi.jar:/usr/share/qtjambi-4/lib/qtjambi-examples.jar:/usr/share/qtjambi-4/lib/qtjambi-designer.jar:/usr/share/qtjambi-4/lib/ant-qtjambi.jar:.
<(22:15:55)>
/usr/share/qtjambi-4/lib/:.
Do you know how to solve the problem ?
Thanks!

Gunnar Sletta

2009-07-28 06:04:56 UTC

Permalink

Post by a***@gmail.com
Re,
./usr/lib/qt4/libQtCore.so.4

If you installed a binary package, you should set the environment using
the set_qtjambi_env.sh file. This will set up the correct classpath. You
should have qtjambi-4.5.0.jar and qtjambi-linux32-gcc-4.5.0.jar in your
path. libQtCore.so.4 is inside the latter one and is loaded by Qt Jambi.

See
http://doc.trolltech.com/qtjambi-4.5.0_01/com/trolltech/qt/qtjambi-installation.html#manually-launching-qt-jambi-applications
for some more details.

You should never make use of the system Qt, as this may be binary
incompatible with the libraries shipped with Qt Jambi and may result in
crashes. Only when you build Qt Jambi from source can you consider using
these.

best regards,
Gunnar

Post by a***@gmail.com
Thanks!

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