"libjawt.so" not loaded by Java 7

[Dr Andrew John Hughes]

On 09:45 Tue 02 Aug     , Kapta Ulo wrote:
> 
> Hi,
> The Java 7 release seems to have broken the LWJGL project on Linux, it no longer works and complains that "libjawt.so" is not loaded. The project has been calling the following method: java.awt.Toolkit.getDefaultToolkit(); to ensure that this native file is loaded, this has worked fine for the last 6 or so years. There seems to have been some internal change which causes this to break. Any idea's on what it could be and how to fix this?
> There is some more information on the LWJGL forum here http://lwjgl.org/forum/index.php/topic,4085.0.html
> Some people have found a workaround using "sudo ldconfig /opt/java/jre/lib/amd64/" which they claim allows it to work as before, but doesn't really explain why its failing, any idea's or pointers would be appreciated.

If adding the library on the system library path is fixing it, it could be related to:

6367077: Purge LD_LIBRARY_PATH usage from the launcher
http://hg.openjdk.java.net/jdk7/jdk7/jdk/rev/de45eac5670e

'Previously the launcher modified the LD_LIBRARY_PATH appropriately for the
 desired data model path, regardless if data models matched or not. The
 launcher subsequently exec'ed the desired executable, in order to make the
 LD_LIBRARY_PATH path available for the runtime linker. This is no longer the
 case, the launcher dlopens the target libjvm.so. All other required
 libraries are loaded by the runtime linker, by virtue of the $ORIGIN paths
 baked into the shared libraries, by the build infrastructure at compile time.'

Have you only seen this with LWJGL i.e. can other Java applications find libjawt.so?

> Thanks
> Kapta 		 	   		  

-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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