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Subject: Re: Gnu Classpath on HP webOS : connexion problem between escher and X server / or loadling escher problem by Gnu classpath
From: Mark Wielaard <mark@klomp.org>
To: Yannick <yleny@laposte.net>
Cc: java@gcc.gnu.org, classpath@gnu.org
Date: Wed, 11 Jan 2012 09:05:00 -0000
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References: <1259555306.23081.4.camel@bapbop> <4B13994B.4060604@redhat.com>	 <jeihuv$v8j$1@dough.gmane.org>
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Hi Yannick,

The classpath list is probably the best to discuss this problem (CCed).

On Wed, 2012-01-11 at 00:30 +0100, Yannick wrote:
> When I launch the JRE and with Xterm started, I have the following error
> message :
>=20
> root@Palm Pre:/media/internal# /media/internal/opt/bin/jamvm HelloWorld
> -bootclasspath
> /media/internal/opt/share/jamvm/classes.zip:/media/internal/opt/share/cla=
sspath/glibj.zip:/media/internal/
> opt/share/classpath/escher-0.3.jar:/media/internal/opt/share/classpath/co=
llections.jar
> HelloWorld -Dawt.toolkit=3Dgnu.java.awt.peer.x.XToolkit HelloWorld
> Exception in thread "main" java.awt.AWTError: Cannot load AWT toolkit:
> gnu.java.awt.peer.gtk.GtkToolkit
> at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:607)
> at
> java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironm=
ent.java:103)
> at java.awt.Window.(Window.java:133)
> at java.awt.Frame.(Frame.java:246)
> at java.awt.Frame.(Frame.java:234)
> at HelloWorld.(HelloWorld.java:7)
> at HelloWorld.main(HelloWorld.java:5)
> Caused by: java.lang.UnsatisfiedLinkError: Native library `gtkpeer' not
> found
> (as file `libgtkpeer.so') in gnu.classpath.boot.library.path and
> java.library.path
> at java.lang.Runtime.loadLibrary(Runtime.java:763)
> at java.lang.System.loadLibrary(System.java:670)
> at gnu.java.awt.peer.gtk.GtkToolkit.(GtkToolkit.java:177)
> at java.lang.VMClass.forName(Native Method)
> at java.lang.Class.forName(Class.java:233)
> at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:583)
> ...6 more
> But here Gnu Classpath is not compiled to use libgtkpeer.so (c/C++ lib
> with Qt
> or GTK) but escher java lib.

See https://www.gnu.org/software/classpath/docs/hacking.html#SEC7

        In this release you have to enable the X peers at runtime by
        setting the system property
        awt.toolkit=3Dgnu.java.awt.peer.x.XToolkit by passing
        `-Dawt.toolkit=3Dgnu.java.awt.peer.x.XToolkit' to the java command
        when running an application.
=20=20=20=20=20=20=20=20
Running configure --enable-default-toolkit=3Dgnu.java.awt.peer.x.XToolkit
should also work. That should probably be the default when configuring
with --disable-gtk-peer and --with-escher.

Hope that helps,

Mark