[savannah-help-public] [sr #108272] Unable to run GUI application using cross-compiled jamvm for arm

[Aditya]

URL:
  <http://savannah.gnu.org/support/?108272>

                 Summary: Unable to run GUI application using cross-compiled
jamvm for arm
                 Project: Savannah Administration
            Submitted by: aditya121
            Submitted on: Mon 25 Mar 2013 01:33:07 PM GMT
                Category: Project mailing lists
                Priority: 5 - Normal
                Severity: 4 - Important
                  Status: None
             Assigned to: None
        Originator Email: address@hidden
        Operating System: GNU/Linux
             Open/Closed: Open
         Discussion Lock: Any

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Details:

Hello everyone, 

First of all I apologize for this direct message. I went through the website
https://savannah.gnu.org/ and only found this address where I can post my
query. I am sorru if I posted at the wrong place. Below is the description of
the problem we are facing.


We have cross-compiled the gnu classpath 0.98 and jamvm 1.5_4 for our arm
xscale device. When we run helloworld program, it works perfectly fine. But
when we run gui applications, there is no response. Below are our commands
which we gave for cross-compiling: 

GNU CLASSPATH: 
./configure --host=arm-xscale-linux-gnueabi  --prefix=/usr/local
--disable-examples --with-x --disable-qt-peer --disable-gtk-peer
--disable-gconf-peer --disable-plugin --enable-alsa --disable-dssi
--with-escher=/home/warrior/java-project/escher-0.3/src  
--enable-local-sockets --enable-collections --enable-xmlj --disable-Werror 
--enable-tools  --enable-default-toolkit=gnu.java.awt.peer.x.XToolkit 

make 

make install 

JAMVM: 

./configure --host arm-xscale-linux-gnueabi --prefix=/usr/local
--with-classpath-install-dir=/usr/local –enable-ffi 

make 

make install 

We then transfer the required files to our device. 


we run our programs as 

jamvm helloworld 

jamvm -verbose Button 

helloworld runs perfectly fine and gives the desired output in proper time.
But when we run any gui sample we receive following error:

Exception in thread "main" java.lang.ExceptionInInitializerError 
   at gnu.java.awt.peer.x.XToolkit.getClasspathFontPeer(XToolkit.java:208) 
   at java.awt.Font.getPeerFromToolkit(Font.java:329) 
... 
Caused by: java.lang.NullPointerException 
   at java.io.InputStreamReader.<init>(InputStreamReader.java:208) 
   at java.util.Properties.load(Properties.java:380) 
   at gnu.java.awt.font.OpenTypeFontPeer.<clinit>(OpenTypeFontPeer.java:93) 
   at gnu.java.awt.peer.x.XToolkit.getClasspathFontPeer(XToolkit.java:208) 

Can someone please guide us on this. This is becoming very critical. 

Earlier we thought this to be jamvm issue, but on jamvm forums , it can out
that we are missing something while cross-compiling gnu classpath.

It will be a great help if someone can direct us towards fixing this to see
what we are missing to get the gui applications running with jamvm. We have
made a small sample using java swing which creates a frame and 2 buttons over
it. 

Thanks in advance.




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